HP OpenVMS Cluster Software

8/11/2019 HP OpenVMS Cluster Software

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H P O p e n VM S C l u s t e r S o f t wa r e

M o d e l sT h i s Q u i c k S p e c d e s c r i b e s V e r s i o n s 6 . 2 - 1 H 3 , 7 . 1 - 1 H 1 , 7 . 1 - 1 H 2 , 7 . 1 - 2 , 7 . 2 , 7 . 2 - 1 , 7 . 2 - 1 H 1 , 7 . 2 - 2 , 7 . 3 , a n d 7 . 3 - 1 o f t h e f o l l o w i n gproducts:

HP VMScluster Software for OpenVMS AlphaH P V A X c l u s t e r S o f t w a r e f o r O p e n V M S V A XHP OpenVMS Cluster Cli ent Software for Alpha (part of NAS150)HP OpenVMS Cluster Cli ent Software for VAX (part of NAS150)

Except where noted, the features descri b ed i n thi s Qui ckSpec apply equally to Alpha and VAX systems. OpenVMS Cluster Softwareli censes and part numb ers are archi tecture speci fi c; refer to the Orderi ng Informati on secti on of thi s Qui ckSpec for further detai ls.

I n t r o d u c t i o nOpenVMS Cluster Software i s an OpenVMS System Integrated Product (SIP). It provi des a hi ghly i ntegrated OpenVMS computi ngenvi ronment di stri b uted over multi ple Alpha and VAX systems. In thi s Qui ckSpec, thi s envi ronment i s referred to as an OpenVMS Cluster.Systems i n an OpenVMS Cluster system can share processi ng, mass storage (i ncludi ng system di sks), and other resources under a si ngleO p e n V M Ssecuri ty and management domai n. Wi thi n thi s hi ghly i ntegrated envi ronment, systems retai n thei r i ndependence b ecause they use local,memory resi dent copi es of the OpenVMS operati ng system. Thus, OpenVMS Cluster systems can b oot and shut down i ndependentlyw h i l e b e n e f i t i n g f r o m c o m m o n r e s o u r c e s .

Appli cati ons runni ng on one or more systems i n an OpenVMS Cluster system can access shared resources i n a coordi nated manner.OpenVMS Cluster software components synchroni ze access to shared resources, allowi ng multi ple processes on any system i n theOpenVMS Cluster to perform coordi nated, shared data updates.

Because resources are shared, OpenVMS Cluster systems offer hi gher avai lab i li ty than standalone systems. Properly confi guredOpenVMS Clustersystems can wi thstand the shutdown or fai lure of vari ous components. For example, i f one system i n an OpenVMS Cluster i s shut down,users can log i n to another system to create a new process and conti nue worki ng. Because mass storage can b e shared clusterwi de, thenew process i s ab le to access the ori gi nal data. Appli cati ons can b e desi gned to survi ve these events automati cally.

All OpenVMS Cluster systems have the followi ng software features i n common:

The OpenVMS operati ng system and OpenVMS Cluster software allow all systems to share read and wri te access to di sk fi les i na fully coordi nated envi ronment. Appli cati on programs can speci fy the level of clusterwi de fi le shari ng that i s requi red; access i sthen coordi nated b y the OpenVMS extended QIO processor (XQP) and R ecord Management Servi ces (R MS). Coherency ofmulti ple-system confi gurati ons i s i mplemented b y OpenVMS Cluster software usi ng a flexi b le and sophi sti cated per-system voti ngm e c h a n i s m .

Shared b atch and pri nt queues are accessi b le from any system i n the OpenVMS Cluster system. The OpenVMS queue managercontrols clusterwi de b atch and pri nt queues, whi ch can b e accessed b y any system. Batch j ob s sub mi tted to clusterwi de queuesare routed to any avai lab le system so the b atch load i s shared.The OpenVMS Lock Manager System Servi ces operate i n a clusterwi de manner. These servi ces allow reli ab le, coordi natedaccess to any resource, and provi de si gnali ng mechani sms at the system and process level across the whole OpenVMS Clustersystem.All di sks and tapes i n an OpenVMS Cluster system can b e made accessi b le to all systems.Process i nformati on and control servi ces, i ncludi ng the ab i li ty to create and delete processes, are avai lab le on a clusterwi de b asi sto appli cati on programs and system uti li ti es. (Clusterwi de process creati on i s avai lab le wi th Versi on 7.1 and hi gher.)C o n f i g u r a t i o n c o m m a n d p r o c e d u r e s a s s i s t i n a d d i n g a n d r e m o v i n g s y s t e m s a n d i n m o d i f y i n g t h e i r c o n f i g u r a t i o n c h a r a c t e r i s t i c s .

QuickSpecs H P O p e nV MS C l u s t e r S of t w a r eQuickSpecs

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The dynamic Show Cluster utility displays the status of OpenVMS Cluster hardware components and communication links.A fully automated clusterwide data and application caching feature enhances system performance and reduces I/O activity.The ab i li ty to defi ne logi cal names that are vi si b le across multi ple nodes i n an OpenVMS Cluster (Versi on 7.2 and hi gher).An appli cati on programmi ng i nterface (API) allows appli cati ons wi thi n multi ple OpenVMS Cluster nodes to communi cate wi the a c h o t h er ( V e r s i on 7 . 2 a n d h i g h e r ).

S t a n d a r d O p e n V M S s y s t e m m a n a g e m e n t a n d s e c u r i t y f e a t u r e s w o r k i n a c l u s t e r w i d e m a n n e r s o t h a t t h e e n t i r e O p e n V M S C l u s t esystem operates as a sing le security and manag ement domain.The OpenVMS Cluster software dynamically balances the interconnect I/O load in OpenVMS Cluster config urations that includemultiple interconnects.Multiple OpenVMS Cluster systems can be config ured on a sing le or extended local area network (LAN). LANs and the LANadapters used for OpenVMS Cluster communications can be used concurrently by other network protocols.The opti onally i nstallab le HP DECamds avai lab i li ty management tool (as well as HP Avai lab i li ty Manager) allows systemmanag ers to monitor and manag e resource availability in real time on all the members of an OpenVMS Cluster.Cross- architecture satellite booting permits VAX boot nodes to provide boot service to Alpha satellites and allows Alpha bootn o d e s t o p r o v i d e b o o t s e r v i c e t o V A X s a t e l l i t e s .System services enable applications to automatically detect chang es in OpenVMS Cluster membership.

Definitions The following terms are used frequently throug hout this QuickSpec:

Boot node - A system that is both a MOP server and a disk server. A boot node can fully services a te l li t e b oo t r e qu e st s .System - An Alpha family or VAX family computer running the OpenVMS operating system. Asystem comprises one or more processors and operates as an OpenVMS Cluster node. AnO p e n V M S C l u s t e r n o d e c a n b e r e f e r r e d t o a s a n O p e n V M S C l u s t e r m e m b e r .D i s k s e r v e r - A s y s t e m t h a t u s e s t h e O p e n V M S M S C P s e r v e r t o m a k e d i s k s t o w h i c h i t h a s d i r e c ta c c e s s a v a i l a b l e t o o t h e r s y s t e m s i n t h e O p e n V M S C l u s t e r s y s t e m .H S C , H S J - A n i n t e l l i g e n t m a s s s t o r a g e c o n t r o l l e r s u b s y s t e m t h a t c o n n e c t s t o t h e C I b u s .

H S D - A n i n t e l l i g e n t m a s s s t o r a g e c o n t r o l l e r s u b s y s t e m t h a t c o n n e c t s t o t h e D S S I b u s .HSG, HSV - An intellig ent mass storag e controller subsystem that connects to the Fibre Channelb us.H S Z - A n i n t e l l i g e n t m a s s s t o r a g e c o n t r o l l e r s u b s y s t e m t h a t c o n n e c t s t o t h e S C S I b u s .M D R ( M o d u l a r D a t a R o u t e r ) - F i b r e C h a n n e l t o S C S I b r i d g e a l l o w i n g S C S I t a p e d e v i c e s t o b e u s e db eh i nd a F i br e C ha nn el s wi t ch .M a i n t e n a n c e O p e r a t i o n s P r o t o c o l ( M O P ) s e r v e r - A s y s t e m t h a t s e r v i c e s s a t e l l i t e b o o t r e q u e s t s t oprovi de the i ni ti al LAN downli ne load sequence of the OpenVMS operati ng system and OpenVMSCluster software. At the end of the initial downline load sequence, the satellite uses a disk server top e r f o r m t h e r e m a i n d e r o f t h e O p e n V M S b o o t i n g p r o c e s s .M i x e d - a r c h i t e c t u r e O p e n V M S C l u s t e r s y s t e m - A n O p e n V M S C l u s t e r s y s t e m t h a t i s c o n f i g u r e d w i t h

b oth VAX and Alpha systems.MSCP (mass storag e control protocol) - A messag e- based protocol for controlling Dig ital Storag eA r c h i t e c t u r e ( D S A ) d i s k s t o r a g e s u b s y s t e m s . T h e p r o t o c o l i s i m p l e m e n t e d b y t h e O p e n V M SDUDR IVER devi ce dri ver.Multi host confi gurati on - A confi gurati on i n whi ch more than one system i s connected to a si ngleCI, DSSI, SCSI, or Fibre Channel interconnect.Satellite - A system that is booted over a LAN using a MOP server and disk server.Si ngle-host confi gurati on - A confi gurati on i n whi ch a si ngle system i s connected to a CI, DSSI,SCSI, or Fibre Channel interconnect.Star coupler - A common connection point for all CI connected systems and HSC and HSJ

QuickSpecs H P O pe nV MS C lu st er S of tw ar eQuickSpecs

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controllers.T a p e s e r v e r - A s y s t e m t h a t u s e s t h e O p e n V M S T M S C P s e r v e r t o m a k e t a p e s t o w h i c h i t h a s d i r e c ta c c e s s a v a i l a b l e t o o t h e r s y s t e m s i n t h e O p e n V M S C l u s t e r s y s t e m .TMSCP (tape mass storag e control protocol) - A messag e- based protocol for controlling DSA tape-s t o r a g e s u b s y s t e m s . T h e p r o t o c o l i s i m p l e m e n t e d b y t h e O p e n V M S T U D R I V E R d e v i c e d r i v e r .

Vote - Systems in an OpenVMS Cluster system can be config ur ed to provide votes that areaccumulated across the multi- system environment. Each system is provided with knowledg e of howm a n y v o t e s a r e n e c e s s a r y t o m e e t a q u o r u m b e f o r e d i s t r i b u t e d s h a r e d a c c e s s t o r e s o u r c e s i se n a b l e d . A n O p e n V M S C l u s t e r s y s t e m m u s t b e c o n f i g u r e d w i t h a t l e a s t o n e v o t i n g s y s t e m .

OpenVMSCluster ClientSoftware

OpenVMS Cluster config urations can be config ured with systems that operate and are licensed explicitlyas client systems. OpenVMS Cluster Client licensing is provided as part of the NAS150 layered product.An i ndi vi dually avai lab le li cense for DS-seri es AlphaServers i s also provi ded. OpenVMS Cluster Cli entsystems contai n full OpenVMS Cluster functi onali ty as descri b ed i n thi s Qui ckSpec, wi th the followi ngexceptions:

C l i e n t s y s t e m s c a n n o t p r o v i d e v o t e s t o w a r d t h e o p e r a t i o n o f t h e O p e n V M S C l u s t e r s y s t e m .C l i e n t s y s t e m s c a n n o t M S C P s e r v e d i s k s o r T M S C P s e r v e t a p e s .

Interconnects OpenVMS Cluster systems are config ured by connecting multiple systems with a communications medium,r e f e r r e d t o a s a n i n t e r c o n n e c t . O p e n V M S C l u s t e r s y s t e m s c o m m u n i c a t e w i t h e a c h o t h e r u s i n g t h e m o s ta p p r o p r i a t e i n t e r c o n n e c t a v a i l a b l e . I n t h e e v e n t o f i n t e r c o n n e c t f a i l u r e , O p e n V M S C l u s t e r s o f t w a r ea u t o m a t i c a l l y u s e s a n a l t e r n a t e i n t e r c o n n e c t w h e n e v e r p o s s i b l e . O p e n V M S C l u s t e r s o f t w a r e s u p p o r t s a n yc o m b i n a t i o n o f t h e f o l l o w i n g i n t e r c o n n e c t s :

C I ( c o m p u t e r i n t e r c o n n e c t )D S S I ( D i g i t a l S t o r a g e S y s t e m s I n t e r c o n n e c t )

S C S I ( S m a l l C o m p u t e r S t o r a g e I n t e r c o n n e c t )F D D I ( F i b e r D i s t r i b u t e d D a t a I n t e r f a c e )E t h e r n e t ( 1 0 / 1 0 0 , G i g a b i t )Asynchronous transfer mode (ATM) (emulated LAN config urations only)M e m o r y C h a nn e l ( V e r si o n 7 . 1 a n d h i g h e r o n l y)F i b re C h an n el ( s to r ag e o n ly , A l ph a o n ly , V e rs i on 7 . 2 -1 a n d h i g he r o n ly )

CI and DSSI are hig hly optimized, special- purpose interconnects for systems and storag e subsystems inOpenVMS Cluster config urations. CI and DSSI provide both system- to- storag e communication and system-t o - s y s t e m c o m m u n i c a t i o n .SCSI is an industry- standard storag e interconnect. Multiple systems can be config ured on a sing le SCSIb u s , t h e r e b y p r o v i d i n g m u l t i h o s t a c c e s s t o S C S I s t o r a g e d e v i c e s . N o t e t h a t t h e S C S I b u s i s n o t u s e d f o r

s y s t e m - t o - s y s t e m c o m m u n i c a t i o n . C o n s e q u e n t l y , s y s t e m s c o n n e c t e d t o a m u l t i h o s t S C S I b u s m u s t a l s o b ec o n f i g u r e d w i t h a n o t h e r i n t e r c o n n e c t t o p r o v i d e s y s t e m - t o - s y s t e m c o m m u n i c a t i o n .Fi b re Channel i s an evolvi ng i ndustry standard i nterconnect for storage and communi cati ons. Support b yOpenVMS Versi on 7.2-1 (and hi gher) allows for a storage-only i nterconnect i n a multi host envi ronmentuti li zi ng Fi b re Channel swi tched topologi es. Wi th Versi on 7.2-2, support for SCSI Tapes uti li zi ng theM o d u l a r D a t a R o u t e r b r i d g e i s s u p p o r t e d . A s i s t r u e w i t h S C S I , s y s t e m s c o n n e c t e d t o a m u l t i h o s t F i b r eC h a n n e l b u s m u s t a l s o b e c o n f i g u r e d w i t h a n o t h e r i n t e r c o n n e c t t o p r o v i d e s y s t e m - t o - s y s t e mcommuni cati on.Ethernet, ATM, and FDDI are industry- standard, g eneral- purpose communications interconnects that can




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b e u s e d t o i m p l e m e n t a l o c a l a r e a n e t w o r k ( L A N ) . E x c e p t w h e r e n o t e d , O p e n V M S C l u s t e r s u p p o r t f o r these LAN types is identical. The ATM device must be used as an emulated LAN config ured device.Ethernet and FDDI provide system- to- system communication. Storag e can be config ured in FDDIe n v i r o n m e n t s t h a t s u p p o r t F D D I - b a s e d s t o r a g e s e r v e r s .OpenVMS Cluster config urations can be config ured using wide area network (WAN) infrastructures, such

a s D S 3 , E 3 , a n d A T M . C o n n e c t i o n t o t h e s e m e d i a i s a c h i e v e d b y t h e u s e o f W A N i n t e r s w i t c h l i n k s(ISLs).Memory Channel is a hig h- performance interconnect that provides system- to- system communication.Memory Channel does not provide direct access to storag e, so a separate storag e interconnect isrequi red i n Memory Channel confi gurati ons.

Configuration Rules T h e m a x i m u m n u m b e r o f s y s t e m s s u p p o r t e d i n a n O p e n V M S C l u s t e r s y s t e m i s 9 6 .

E ve ry s ys te m i n an O pe nV MS C lu st er s ys te m m us t be c on ne ct ed t o e ve ry o th er s ys te m v ia an ys u p p o r t e d O p e n V M S C l u s t e r i n t e r c o n n e c t ( s e e T a b l e 1 ) .

VAX-11/7x x, VAX 6000, VAX 7000, VAX 8xxx, VAX 9000, and VAX 10000 seri es systems

requi re a system di sk that i s accessed vi a a local adapter or through a local CI or DSSIconnection. These systems cannot be config ured to boot as satellite nodes.A l l s y s t e m s c o n n e c t e d t o a c o m m o n C I , D S S I , o r M e m o r y C h a n n e l i n t e r c o n n e c t m u s t b e c o n f i g u r e da s O p e n V M S C l u s t e r m e m b e r s . O p e n V M S C l u s t e r m e m b e r s c o n f i g u r e d o n a C I , D S S I , o r M e m o r yChannel will become members of the same OpenVMS Cluster (this is imposed automatically by theO p e n V M S C l u s t e r s o f t w a r e ) . A l l s y s t e m s c o n n e c t e d t o a m u l t i h o s t S C S I b u s m u s t b e c o n f i g u r e d a sm em be rs o f t he s am e O pe nV MS C lu st er .An OpenVMS Cluster system can include any number of star couplers. Table 2 shows the numbero f C I a da pt er s s up po rt ed b y d if fe re nt s ys te ms . T he n um be r o f s tar c ou pl er s t ha t a s ys te m c an b econnected to is limited by the number of adapters with which it is config ured.T h e m a x i m u m n u m b e r o f s y s t e m s t h a t c a n b e c o n n e c t e d t o a s t a r c o u p l e r i s 1 6 , r e g a r d l e s s o f s t a r

coupler si ze.T h e K F Q S A Q - b u s t o D S S I a d a p t e r d o e s n o t s u p p o r t s y s t e m - t o - s y s t e m c o m m u n i c a t i o n a c r o s s t h eD S S I ; s y s t e m s u s i n g t h i s a d a p t e r m u s t i n c l u d e a n o t h e r i n t e r c o n n e c t f o r s y s t e m - t o - s y s t e mcommuni cati on.T h e m a x i m u m n u m b e r o f s y s t e m s t h a t c a n b e c o n n e c t e d t o a D S S I i s f o u r , r e g a r d l e s s o f s y s t e m o r a d a p t e r t y p e . A n y m i x o f s y s t e m s a n d a d a p t e r s i s p e r m i t t e d , e x c e p t w h e r e n o t e d i n t h e H a r d w a r eSupport section of this QuickSpec. Depending on the system model, it may not be possible toconfig ure four systems on a common DSSI bus because of DSSI bus cable- leng th restrictions. Refert o t h e s p e c i f i c s y s t e m s y s t e m c o n f i g u r a t i o n m a n u a l s f o r f u r t h e r i n f o r m a t i o n .T h e m a x i m u m n u m b e r o f s y s t e m s t h a t c a n b e c o n n e c t e d t o a S C S I b u s i s 3 . I f t h e S C S I b u sincludes a five- port or g reater Fair Arbitration SCSI Hub (DWZ Z H- 05), the maximum number of

s y s t e m s i s i n c r e a s e d t o 4 .T h e m a x i m u m n u m b e r o f m u l t i h o s t S C S I b u s e s t h a t a s y s t e m c a n b e c o n n e c t e d t o i s 2 6 .The confi gurati on si ze for Fi b re Channel storage i ncreases on a regular b asi s wi th new updates toO p e n V M S . A s s u c h , p l e a s e r e f e r t o t h e < R E F E R E N C E > ( V M S _ C L U S T E R _ C O N F I G ) m a n u a l f o r t h emost up-to-date confi gurati on capab i li ti es.B e g i n n i n g w i t h O p e n V MS V e r s i o n 7 . 2 - 1 , M u l t i p a t h F a i l o v er f o r b o t h P a r a l le l S C S I a n d F i b r eC h a n n e l s t o r a g e e n v i r o n m e n t s i s s u p p o r t e d . T h i s f e a t u r e a l l o w s f o r t h e f a i l o v e r o f c l u s t e r s t o r a g ec o m m u n i c a t i o n s f r o m o n e p a t h t o a n o t h e r w h e n m u l t i p l e s t o r a g e b u s e s h a v e b e e n c o n n e c t e d t o t h es a m e d a t a s o u r c e . F o r d e t a i l e d i n f o r m a t i o n , r e f e r t o t h e < R E F E R E N C E > ( V M S _ C L U S T E R _ C O N F I G )manual.




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Beg inning with OpenVMS Version 7.3- 1, Multipath failover to the MSCP served path is supported.T h i s f e a t u r e a l l o w s f a i l o v e r s f r o m p h y s i c a l c o n n e c t e d s t o r a g e p a t h s t o t h e c l u s t e r s e r v e d p a t h f o r d a t a a c c e s s . F o r d e t a i l e d i n f o r m a t i o n , r e f e r t o t h e < R E F E R E N C E > ( V M S _ C L U S T E R _ C O N F I G )manual.O p e n V M S C l u s t e r s y s t e m s t h a t a r e c o n f i g u r e d u s i n g W A N i n t e r c o n n e c t s m u s t a d h e r e t o t h e

d e t a i l e d l i n e s p e c i f i c a t i o n s d e s c r i b e d i n t h e < R E F E R E N C E > ( V M S _ C L U S T E R _ C O N F I G ) m a n u a l . T h emaximum system separation is 150 miles.A sing le time- zone setting must be used by all systems in an OpenVMS Cluster system.An OpenVMS Cluster system can be config ured with a maximum of one quorum disk. A quorumd i s k c a n n o t b e a m e m b e r o f a n O p e n V M S v o l u m e s e t o r o f a s h a d o w s e t c r e a t e d b y t h e H P

Volume Shadowi ng for OpenVMS product.A system di sk can contai n only a si ngle versi on of the OpenVMS operati ng system and i sa r c h i t e c t u r e s p e c i f i c . F o r e x a m p l e , O p e n V M S A l p h a V e r s i o n 7 . 1 c a n n o t c o e x i s t o n a s y s t e m d i s kwi th OpenVMS VAX Versi on 7.1.HSJ and HSC series disks and tapes can be dual pathed between controllers on the same ordifferent star couplers. The HSD30 series disks and tapes can be dual pathed between controllers

on the same or di fferent DSSI i nterconnects. Such dual pathi ng provi des enhanced data avai lab i li tyusi ng an OpenVMS automati c recovery capab i li ty called fai lover. Fai lover i s the ab i li ty to use ana l t e r n a t e h a r d w a r e p a t h f r o m a s y s t e m t o a s t o r a g e d e v i c e w h e n a f a i l u r e o c c u r s o n t h e c u r r e n tp a t h . T h e f a i l o v e r p r o c e s s i s t r a n s p a r e n t t o a p p l i c a t i o n s . D u a l p a t h i n g b e t w e e n a n H S J o r H S Ca n d a l o c a l a d a p t e r i s n o t p e r m i t t e d . W h e n t w o l o c a l a d a p t e r s a r e u s e d f o r d u a l p a t h i n g , e a c ha da pt er m us t b e l oc at ed o n a s ep ar at e s ys te m o f t he s am e a rc hi te ct ur e.N O T E : W h e n d i s k s a n d t a p e s a r e d u a l p a t h e d b e t w e e n c o n t r o l l e r s t h a t a r e c o n n e c t e d t o d i f f e r e n ts t a r c o u p l e r s o r D S S I b u s e s , a n y s y s t e m c o n n e c t e d t o o n e o f t h e s t a r c o u p l e r s o r b u s e s m u s t a l s o b ec o nn e ct e d t o t h e o t he r .Di sks can b e dual pathed b etween pai rs of HSZ controllers that are arranged i n a dual-redundantc o n f i g u r a t i o n . T h e c o n t r o l l e r s m u s t b e c o n n e c t e d t o t h e s a m e h o s t S C S I b u s . F a i l o v e r i s

a c c o m p l i s he d u s i n g t he H S Z t r a n s pa r e n t fa i l o v e r c a p a b i l i ty .OpenVMS operating system and layered- product installations and upg rades cannot be performedacross architectures. OpenVMS Alpha software installations and upg rades must be performedusing an Alpha system with direct access to its system disk. OpenVMS VAX software installationsa n d u p g r a d e s m u s t b e p e r f o r m e d u s i n g a V A X s y s t e m w i t h d i r e c t a c c e s s t o i t s s y s t e m d i s k .E th er ne t L AN s a nd t he p ro toc ol s t hat u se t he m m us t c on fo rm t o t he I EE E 8 02 .2 a nd I EE E 8 02 .3s t a n d a r d s . E t h e r n e t L A N s m u s t a l s o s u p p o r t E t h e r n e t V e r s i o n 2 . 0 p a c k e t f o r m a t s .F D D I L A N s a n d t h e p r o t o c o l s t h a t u s e t h e m m u s t c o n f o r m t o t h e I E E E 8 0 2 . 2 , A N S I X 3 . 1 3 9 - 1 9 8 7 ,ANSI X3.148-1988, and ANSI X3.166-1990 standards.L A N s e g m e n t s c a n b e b r i d g e d t o f o r m a n e x t e n d e d L A N ( E L A N ) . T h e E L A N m u s t c o n f o r m t o I E E E802.1D, with the following restrictions:

- - A l l L A N p a t h s u s e d f o r O p e n V M S C l u s t e r c o m m u n i c a t i o n m u s t o p e r a t e w i t h a n o m i n a l b a n d w i d t ho f a t l e a s t 1 0 m e g a b i t s p e r s e c o n d .- - The ELAN must be capable of delivering packets that use the padded Ethernet Version 2.0p a c k e t f o r m a t a n d t h e F D D I S N A P / S A P p a c k e tformat.- - T h e E L A N m u s t b e a b l e t o d e l i v e r p a c k e t s w i t h a m a x i m u m d a t a f i e l d l e n g t h o f a t l e a s t 1 0 8 0bytesN O T E : I n t h e p a d d e d E t h e r n e t f o r m a t , t h e d a t a f i e l d f o l l o w s t h e 2 - b y t e l e n g t h f i e l d . T h e s e t w of i e l d s t o g e t h e r c o m p r i s e t h e L L C d a t a f i e l d i n t h e 8 0 2 . 3 f o r m a t .- - The maximum number of bridg es between any two end nodes is 7.




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- - The maximum transit delay throug h any bridg e must not exceed 2 seconds.- - The ELAN must provide error- detection capability between end nodes that is equivalent to thatprovided by the Ethernet and FDDI data link frame- check sequences.T h e a v e r a g e p a c k e t - r e t r a n s m i t t i m e o u t r a t i o f o r O p e n V M S C l u s t e r t r a f f i c o n t h e L A N f r o m a n ys y s t e m t o a n o t h e r m u s t b e l e s s t h a n 1 t i m e o u t i n 1 0 0 0 t r a n s m i s s i o n s .

R e c o m m e n d a t i o n s The optimal OpenVMS Cluster system config uration for any computing environment is based onrequirements of cost, functionality, performance, capacity, and availability. Factors that impact theserequirements include:

A p pl i c at i on s i n u seN um be r o f u se rsN u m b e r a n d m o d e l s o f s y s t e m sInterconnect and adapter throug hput and latency characteristicsD i s k a n d t a p e I/ O c a pa c i ty a n d a c c es s t i m eNumber of disks and tapes being served

Interconnect utilizationHP recommends OpenVMS Cluster system config urations based on its experience with the OpenVMSCluster Software product. The customer should evaluate specific application dependencies andperformance requirements to determine an appropriate config uration for the desired computinge n v i r o n m e n t .

When planni ng an OpenVMS Cluster system, consi der the followi ng recommendati ons:

OpenVMS Cluster systems should be config ured using interconnects that provide appropriatep e r f o r m a n c e f o r t h e r e q u i r e d s y s t e m u s a g e . I n g e n e r a l , u s e t h e h i g h e s t - p e r f o r m a n c e i n t e r c o n n e c tp o s s i b l e . C I a n d M e m o r y C h a n n e l a r e t h e p r e f e r r e d i n t e r c o n n e c t s b e t w e e n p o w e r f u l s y s t e m s .Althoug h OpenVMS Cluster systems can include any number of system disks, consider systemperformance and manag ement overhead ind e t e r m i n i n g t h e i r n u m b e r a n d l o c a t i o n . W h i l e t h e p e r f o r m a n c e o f c o n f i g u r a t i o n s w i t h m u l t i p l es y s t e m d i s k s m a y b e h i g h e r t h a n w i t h a s i n g l e s y s t e m d i s k , s y s t e m m a n a g e m e n t e f f o r t s i n c r e a s e i np r o p o r t i o n t o t h e n u m b e r o f s y s t e m d i s k s .Data availability and I/O performance are enhanced when multiple OpenVMS Cluster systemsh a v e d i r e c t a c c e s s t o s h a r e d s t o r a g e ; w h e n e v e r p o s s i b l e , c o n f i g u r e s y s t e m s t o a l l o w d i r e c t a c c e s sto shared storag e in favor of OpenVMS MSCP served access. Multiaccess CI, DSSI, SCSI, andFi b re Channel storage provi des hi gher data avai lab i li ty than si ngly accessed, local adapter-b asedstorage. Addi ti onally, dual pathi ng of di sks b etween local or HSC/HSJ/HSD/HSZ/HSG storagecontrollers enhances data avai lab i li ty i n the event of controller fai lure.OpenVMS Cluster systems can enhance avai lab i li ty b y uti li zi ng redundant components, such asadditional systems, storag e controllers, disks, and tapes. Extra peripheral options, such as printersand termi nals, can also b e i ncluded. Multi ple i nstances of all OpenVMS Cluster i nterconnects(CI, Memory Channel, DSSI, SCSI, Ethernet, ATM, Gig abit Ethernet, Fibre Channel, and FDDI) ares u p p o r t e d .To enhance resource availability, OpenVMS Clusters that implement satellite booting should usemultiple boot servers. When a server fails in config urations that include multiple servers, satelliteaccess to multipath disks will fail over to another path. Disk servers should be the most powerfulsystems in the OpenVMS Cluster and should use the hig hest bandwidth LAN adapters available.T h e p e r f o r m a n c e o f a n F D D I L A N v a r i e s w i t h e a c h c o n f i g u r a t i o n . W h e n a n F D D I i s u s e d f o r OpenVMS Cluster communi cati ons, the ri ng latency when the FDDI ri ng i s i dle should not exceed




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400 microseconds. This ring latency translates to a cable distance between end nodes ofapproximately 40 kilometers.T h e E L A N m u s t p r o v i d e a d e q u a t e b a n d w i d t h , r e l i a b i l i t y , a n d l o w d e l a y t o o p t i m i z e t h e o p e r a t i o nof the OpenVMS Cluster. There are in depth config uration g uidelines for these ELAN environmentsin the OpenVMS documentation set, which are frequently updated as the technolog y area evolves.

F o r s p e c i f i c c o n f i g u r a t i o n i n f o r m a t i o n , r e f e r t o t h e f o l l o w i n g m a n u a l s :- - < R E F E R E N C E > ( v m s _ v a x c l u s t e r )- - < R E F E R E N C E > ( V M S _ C L U S T E R _ C O N F I G )The R AID level 1 storage functi onali ty of Volume Shadowi ng for OpenVMS provi des the followi ngadvantag es:- - E n h a n c e d d a t a a v a i l ab i l i t y i n t h e e v e n t o f d i s k f a i l u r e- - Enhanced read performance with multiple shadow- set members

F o r m o r e i n f o r m a t i o n , r e f e r t o t h e V o l u m e S h a d o w i n g f o r O p e n V M S S o f t w a r e P r o d u c t D e s c r i p t i o n( S P D 2 7 . 2 9 . x x ) .

T h e H P D E C r a m f o r O p e n V M S s o f t w a r e p r o d u c t c a n b e u s e d t o c r e a t e h i g h - p e r f o r m a n c e , m e m o r y -resident RAM disks. For additional information, refer to the DECram for OpenVMS SoftwareProduct Descri pti on (SPD 34.26.xx) for addi ti onal i nformati on.

O p e n V M S C l u s t e r M a n a g e m e n t T o o l sOpenVMS software incorporates the features of a real- time monitoring , investig ation, diag nostic, and system manag ement tools thatcan be used to improve overall cluster system availability.

HP DE C am d s The HP DECamds avai lab i li ty management tool contai ns a console and an OpenVMS devi ce dri ver. Theconsole i s a DECwi ndows Moti f b ased appli cati on that allows system managers to di splay wi ndowsshowing processes, quotas, disks, locks, memory, SCS data structures, and I/O activity in the OpenVMSCluster. The Moti f[TM] di splay can b e di rected to any X-compati b le di splay. The dri ver i s a data collectorthat runs on the monitored OpenVMS systems. Console application and driver software is provided forAlpha and VAX systems.

HP A v a i l a b il i t y M a n a ge r H P A v a i l a b i l i t y M a n a ge r i s f u n c t i o n a l l y s i m i l ar t o D E C a m d s , b u t i t r u n s o n W i n d o w s - b a s e d s y s t e m s a n do n O pe nV MS A l ph a.

S C A C P Systems Communications Architecture Control Prog ram (SCACP) is desig ned to monitor and manag e LANcluster communications.

Hardware SupportSystemSupport A n y A l p h a o r V A X s y s t e m , a s d o c u m e n t e d i n t h e h p O p e n V M S O p e r a t i n g S y s t e m f o r V A X a n d A l p h a

Software Product Description (SPD 25.01.xx), can be used in an OpenVMS Cluster.




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P e r i p h e r a l O p t i o n a n dStorage ControllerSupport

OpenVMS Cluster systems can use all peripheral options and storag e subsystems supported byOpenVMS. Refer to the OpenVMS Operating System for VAX and Alpha SPD (SPD 25.01.xx) for morei n f o r m a t i o n .

Interconnect Support Table 1 shows which systems are supported on which interconnects and whether the system can beb o o t e d a s a s a t e l l i t e n o d e o v e r t h a t i n t e r c o n n e c t . A l l s y s t e m s c a n s e r v i c e s a t e l l i t e b o o t r e q u e s t s o v e r aL A N i n t e r c o n n e c t ( F D D I o r E t h e r n e t ) .

N O T E : Levels of i nterconnect support and LAN b ooti ng capab i li ti es are conti nually b ei ng i ncreased. Inmany cases, these addi ti onal capab i li ti es result from hardware opti on and system console mi crocodee n h a n c e m e n t s a n d a r e n o t d e p e n d e n t o n O p e n V M S s o f t w a r e . F o r t h e m o s t u p - t o - d a t e i n f o r m a t i o n , r e f e r to the appropriate hardware option and system documentation.

LANSupport O p e n V M S C l u s t e r s y s t e m s c a n u s e a l l E t h e r n e t ( 1 0 M b / s e c a n d 1 0 0 M b / s e c ) a n d F D D I L A N a d a p t e r ss u p p o r t e d b y O p e n V M S f o r a c c e s s t o E t h e r n e t a n d F D D I i n t e r c o n n e c t s . A n y n u m b e r o f L A N a d a p t e r s c a n

b e confi gured i n any comb i nati on (wi th the excepti on that a Q-b us can b e confi gured wi th only one FDDIadapter). Refer to the OpenVMS Operating System for VAX and Alpha Software Product Description (SPD2 5 . 0 1 . x x ) f o r m o r e i n f o r m a t i o n .Gig abit Ethernet LAN adapters can be used for limited OpenVMS Cluster interconnect capability for

Version 7.1- 2 throug h Version 7.2- xx. OpenVMS Version 7.3 clusters provide more robust support forG i g a b i t E t h e r n e t a n d A T M e m u l a t e d L A N E t h e r n e t c o n n e c t i o n s . A d d i t i o n a l l y , O p e n V M S V e r s i o n 7 . 3 a l s oallows for load di stri b uti on of SCS cluster communi cati ons traffi c across multi ple, parallel LAN connecti onsb e t w e e n c l u s t e r n o d e s . F o r s p e c i f i c l i m i t a t i o n s o n t h e s e i n t e r c o n n e c t s , r e f e r t o t h e r e l e a s e n o t e s f o r y o u r OpenVMS operating system version.The DEFZ A FDDI adapter is supported on VAX systems only.

N O T E : VAX systems cannot be booted over an FDDI.

System CI MemoryC h a n n e l 1

D S S I Multi-HostSCSI

FDDI ATM 3,Ethernet

F i b r e C h a n n e l

AlphaServerG S 8 0 / 1 6 0 / 3 2 0 ,G S 6 0 / 1 4 0 ,G S 1 2 8 0 , 8 2 0 0 ,8400

Yes 4 Ye s Yes 5 Yes Y e s + S a t6 Y es Ye s

AlphaServer ES40,E S 4 5 , E S 4 7 , 4 0 0 0 ,

4100

Yes Ye s Y es Yes Y e s + S a t Y es Ye s

A l p h a S e r v e r 1 2 0 0 ,2 0 0 0 , 2 1 0 0 ,2 1 0 0 A , D S 2 0 ,D S 2 0 E

Yes Ye s Y es Yes Ye s+ Sa t Ye s+ Sa t Yes 7

AlphaServerDS10/10L/25,1 0 0 0 , 1 0 0 0 A

--- Ye s Y es Yes Ye s+ Sa t Ye s+ Sa t Yes 8




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A l p h a S e r v e r 4 0 0 ,800

-- - --- Y es Yes Y e s + S a t1 - Ye s +Sa t Ye s9

AlphaServer 300 -- - --- --- Yes Y es Y e s + S a t ---

AlphaStati ons -- - --- --- Yes Y e s + S a t10 Y e s + S a t Yes 2

D E C 7 0 0 0 , 1 0 0 0 0 Yes --- Yes --- Y e s + S a t Yes ---D E C 4 0 0 0 -- - --- Yes --- Yes Y e s + S a t ---

D E C 3 0 0 0 -- - --- --- Yes Y e s + S a t11 Y e s + S a t ---

D E C 2 0 0 0 -- - --- --- -- - Yes Y e s + S a t ---

VAX 6000, 7000,1 0 0 0 0

Yes --- Yes --- Y es Y es ---

VAX 8xxx, 9xxx,1 1 / x x x

Yes --- --- -- - --- Yes ---

VAX 4xxx 12 -- - --- Yes --- Yes Y e s + S a t ---

VAX 2xxx, 3xxx 12 -- - --- --- -- - --- Y e s + S a t ---

Versi on 7.1 and hi gher only. Support for Memory Channel on theGS1280 and ES47 wi ll b e announced duri ng H1CY2003.1.Newer AlphaStations based on DS Series servers support FibreChannel Storag e.2.ATM using an emulated LAN config uration can be used as a cluster interconnect on all AlphaServer systems, except forA l p h a S e r v e r 3 0 0 a n d 4 0 0 s y s t e m s . A T M i s n o t s u p p o r t e d o n t h e D E C S e r i e s s y s t e m s l i s t e d o r o n V A X s y s t e m s .

3.

E a c h " Y e s " m e a n s t h a t t h i s s y s t e m i s s u p p o r t e d o n t h i s i n t e r c o n n e c t b u t c a n n o t b e b o o t e d a s a s a t e l l i t e o v e r t h i s i n t e r c o n n e c t .4.DSSI is not supported on GS, ES, of DS Series AlphaServers.5.Each "Yes+Sat" means that this system is supported on this interconnect and can be booted as a satellite node over thisi n t e r c o n n e c t .

6.

E x c l u d e s A l p h a S e r v e r 2 0 0 0 , 2 1 0 0 , 2 1 0 0 A .7.E x c l u d e s A l p h a S e r v e r 1 0 0 0 .8.AlphaServer 800 only.9.

Versi on 7.1 and hi gher only. Most models provi de FDDI b ooti ng capab i li ty. R efer to system-speci fi c documentati on for detai ls.10.Usi ng DEFTA only.11.S o m e m o d e l s m a y p r o v i d e s l i g h t l y d i f f e r e n t i n t e r c o n n e c t s u p p o r t . R e f e r t o s y s t e m - s p e c i f i c d o c u m e n t a t i o n f o r d e t a i l s .12.

CI Support O p e n V M S C l u s t e r s y s t e m s c a n b e c o n f i g u r e d w i t h m u l t i p l e C I a d a p t e r s . T a b l e 2 s h o w s t h e t y p e s o fadapters that are supported by each system. There can be only one type of adapter config ured in asystem (with the exception that, with OpenVMS Version 7.1, CIX CD and CIPCA adapters can bec o n f i g u r e d t o g e t h e r i n t h e s a m e s y s t e m ) . T h e m a x i m u m n u m b e r o f e a c h t y p e i s n o t e d i n t h e t a b l e . T h e C Ia d a p t e r s i n a s y s t e m c a n c o n n e c t t o t h e s a m e o r d i f f e r e n t s t a r c o u p l e r s .

N O T E : T h e C I B C A - A a d a p t e r c a n n o t c o e x i s t w i t h a K F M S A a d a p t e r o n t h e s a m e s y s t e m .N O T E : The CIBCA- A and CIBCA- B are different.




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System - Cixxx 750 78 0 BCI BC A -A BC A -B XC D PCA

AlphaServer GS,8400

--- --- - -- - -- --- 1 0 10 , 2 6 1

A l p h a S e r v e r 8 2 0 0 --- --- - -- - -- --- --- 1 0 , 2 6 1

AlphaServer ES,4 0 0 0 , 4 1 0 0

--- --- - -- - -- --- --- 3 2

A l p h a S e r v e r 4 0 0 0 +I / O e x pa n si o n

- -- --- - -- - -- --- --- 6 3

AlphaServer DS,2 1 0 0 A , 1 2 0 0

- -- --- - -- - -- --- --- 3

A l p h a S e r v e r 2 0 0 0 ,2 1 0 0

--- --- - -- - -- --- --- 2 4

D E C 7 0 0 0 , 1 0 0 0 0 --- --- - -- - -- --- 10 ---

VAX 11/750 1 --- - -- - -- --- --- ---

VAX 11/780,1 1 7 8 5

--- 1 - -- - -- --- --- ---

VAX 6000 --- --- - -- 1 4 4 ---

VAX 82xx, 83xx 1 1 1 --- ---

VAX 86xx --- 2 - -- - -- --- --- ---

VAX 85xx, 8700,8 8 x x

--- --- 1 1 2 --- ---

VAX 9000 --- --- - -- - -- --- 6 ---

VAX 7000, 10000 --- --- - -- - -- --- 10 ---

The two numbers represent the support limits for Version 6.2- 1H3 and Version 7.1 and hig her, respectively.1. F o r t h r e e C I P C A s , o n e m u s t b e C I P C A - A A a n d t w o m u s t b e C I P C A - B A .2.O n l y t h r e e c a n b e C I P C A - A A .3.Only one can b e a CIPCA-BA.4.

Ob serve the followi ng gui deli nes when confi guri ng CIPCA adapters:

The CIPCA adapter can coexist on a CI bus with CIX CD and CIBCA- B CI adapters and all variants of the HSC/HSJ controller exceptt h e H S C 5 0 . O t h e r C I a d a p t e r s c a n n o t b e c o n f i g u r e d o n t h e s a m e C I b u s a s a C I P C A . H S C 4 0 / 7 0 c o n t r o l l e r s m u s t b e c o n f i g u r e dw i t h a R e v i si o n F ( o r h i g h e r ) L 1 0 9 m o d u l e.

The CIPCA-AA adapter occupi es a si ngle PCI b ackplane slot and a si ngle EISA b ackplane slot.T h e C I P C A - B A a d a p t e r o c c u p i e s t w o P C I b a c k p l a n e s l o t s .

Star Coupler Expander A CI star coupler expander (CISCE) can be added to any star coupler to increase its connection capacityt o 3 2 p o r t s . T h e m a x i m u m n u m b e r o f s y s t e m s t h a t c a n b e c o n n e c t e d t o a s t a r c o u p l e r i s 1 6 , r e g a r d l e s s o ft he n um be r o f p or ts .


DA - 11712 Worldwide QuickSpecs Version 2 9/3/2003 P a g e 1 0


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Multihost SCSI SupportOpenVMS Cluster Software provides support for multihost SCSI config urations using Alpha systems andSCSI adapters, devices, and controllers. Table 1 shows which systems can be config ured on a multihostSCSI bus.Any HP AlphaStation or AlphaServer system that supports optional K Z PSA (fast- wide differential) or K Z PBA-CB (ultrawide differential; Version 7.1- 1H1 and hig her only) adapters can use them to connect to am u l t i h o s t S C S I b u s . R e f e r t o t h e a p p r o p r i a t e s y s t e m d o c u m e n t a t i o n f o r s y s t e m s p e c i f i c K Z P S A a n d K Z P B Asupport i nformati on. Si ngle-host Ultra SCSI connecti ons wi th ei ther the KZPBA-CA (ultrawi de si ngle-channel adapter) or the KZPBA-CB (ultrawi de di fferenti al adapter) are supported i n Versi on 6.2-H3 andhig her.

Also, any AlphaStation or AlphaServer system except the AlphaServer 4000, 4100, 8200, and 8400can use embedded NCR- 810- based SCSI adapters or optional K Z PAA adapters to connect to a multihostSCSI bus.Additionally, DEC 3000 systems can use optional K Z TSA (fast- wide differential) adapters to connect to am u l t i h o s t S C S I b u s .

N O T E : A wide rang e of SCSI adapters can be used to connect to a sing le- host SCSI bus. For furtheri n f o r m a t i o n a b o u t t h e c o m p l e t e r a n g e o f S C S I s u p p o r t , r e f e r t o t h e O p e n V M S O p e r a t i n g S y s t e m f o r V A Xa n d A l p h a S o f t w a r e P r o d u c t D e s c r i p t i o n ( S P D 2 5 . 0 1 . x x ) .

HP recommends optional adapters for connection to multihost buses. Use of optional adapters simplifiesSCSI cab li ng and also leaves the emb edded system adapter avai lab le for tape dri ves, floppi es, and CD-R O M s .Multi host SCSI confi gurati ons can i nclude DWZZA/DWZZB si ngle-ended SCSI to di fferenti al SCSIconverters .Multi host SCSI b uses can b e confi gured wi th any appropri ately compli ant SCSI-2 or SCSI-3 di sk. Di sksm us t s up po rt t he f ol lo wi ng t hr ee f ea tu re s:

M u l t i h o s t s u p p o r tT a g ge d c o m ma n d q u eu e in g

A u t o m a t i c b a d b l o c k r e v e c t o r i n gT h e s e S C S I d i s k r e q u i r e m e n t s a r e f u l l y d o c u m e n t e d i n t h e < R E F E R E N C E > ( V M S _ C L U S T E R _ C O N F I G )manual. In general, nearly all di sk dri ves avai lab le today, from HP or thi rd-party suppli ers, support thesefeatures. K nown exceptions to the rang e of HP drives are the RZ 25 and RZ 26F, which do not supporttagged command queuei ng.T a p e d r i v e s , f l o p p y d i s k s , a n d C D - R O M s c a n n o t b e c o n f i g u r e d o n m u l t i h o s t S C S I b u s e s . C o n f i g u r e t h e s edevi ces on si ngle-host SCSI b uses.HSZ series storag e controllers can be config ured on a mulithost SCSI bus. Refer to the appropriate HS Zstorag e controller documentation for config uration information. Note that it is not possible to config uret a p e d r i v es , f l o p p y d i s k s , o r C D - RO M s o n H S Z c o n -t r o l l e r s t o r a g e b u s e s w h e n t h e H S Z i s c o n n e c t e d t o a m u l t i h o s t S C S I b u s .

Multi host SCSI b uses must adhere to all SCSI-2 or SCSI-3 speci fi cati ons. R ules regardi ng cab le lengtha n d t e r m i n a t i o n m u s t b e a d h e r e d t o c a r e f u l l y . F o r f u r t h e r i n f o r m a t i o n , r e f e r t o t h e S C S I - 2 o r S C S I - 3s p e c i f i c a t i o n o r t h e < R E F E R E N C E > ( V M S _ C L U S T E R _ C O N F I G ) m a n u a l .




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Fibre Channel StorageSupport

Beg inning with Version 7.2- 1, OpenVMS Cluster Software provides support for multihost Fibre Channelstorage confi gurati ons usi ng Alpha systems and Fi b re Channel adapters, swi tches, and controllers. Di rect-attached Fibre Channel storag e and Arbitrated Loop Fibre Channel config urations are not supported. Fort h e c u r r e n t c o n f i g u r a t i o n g u i d e l i n e s a n d l i m i t a t i o n s , r e f e r t o t h e < R E F E R E N C E > ( V M S _ C L U S T E R _ C O N F I G )manual. This manual outlines the specific requirements for the controller (HSG80, HSG60, andHSV110), switch, and adapter (K GPSA- **), and for the disks that can be attached to this config uration.T h e n u m b e r o f h o s t s , a d a p t e r s , s w i t c h e s , a n d d i s t a n c e b e t w e e n t h e s e i t e m s , i s c o n s t a n t l y b e i n gincreased, so refer to the manual for the up- to- date information on this evolving area.Starting with OpenVMS Version 7.2- 2, SCSI tape devices can be connected to a Fibre Channel storag eenvironment with the use of a Modular Data Router (MDR) bridg e product. This bridg e allows these tapedevices to be placed behind the Fibre Channel switch environment and to be shared via the samemethodologi es as the Fi b re Channel di sks i n the same fab ri c.Because the support for Fibre Channel is currently limited to storag e only, a second interconnect for node-to- node communications must be present for the full clustered capability to be utilized.

D E C a m d s C o n s o l e HP recommends that the DECamds console run on a standalone workstation with a color monitor.However, it can also run on a workstation that is config ured as an OpenVMS Cluster member, or on anonworkstati on system usi ng DECwi ndows to di rect the di splay to an X-b ased di splay.

S o ft w a r e R eq u i r em en t sO p e n V M S O p e r a t i n gSystem

For information about OpenVMS Operating System Version 7.3, refer to the OpenVMS OperatingSystem for Alpha and VAX Software Product Description (SPD 25.01.xx).For information about OpenVMS Operating System Version 7.2- 2, refer to the OpenVMS OperatingSystem for Alpha and VAX Software Product Description (SPD 41.87.xx).The ability to have more than one version of OpenVMS in an OpenVMS Cluster allows upg rades to be

performed in a stag ed fashion so that continuous OpenVMS Cluster system operation is maintainedduri ng the upgrade process. Only one versi on of OpenVMS can exi st on any system di sk; multi pleversions of OpenVMS in an OpenVMS Cluster require multiple system disks. Also, system disks arearchitecture specific: OpenVMS Alpha and OpenVMS VAX cannot coexist on the same system disk. Thecoexistence of multiple versions of OpenVMS in an OpenVMS Cluster config uration is supporteda c c o r di n g t o t h e f o l l ow i n g c o n d i ti o n s :

Warranted support is provided for mixed- architecture OpenVMS Cluster systems in which all Alphaa n d V A X s y s t e m s a r e r u n n i n g t h e s a m e v e r s i o n o f O p e n V M S - V e r s i o n 6 . 2 - x x x , V e r s i o n 7 . 0 , V e r s i o n7.1- xxx, Version 7.2- xxx, or Version 7.3- xxx. Warranted support means that HP has fully qualifiedthe two architectures coexisting in a OpenVMS Cluster and will answer any problems identified bycustomers using these config urations.

Mig ration support is provided for OpenVMS Cluster systems running two versions of the OpenVMSoperating system. These versions can be:-- Any mi x of Versi on 7.3-1, Versi on 7.3, Versi on 7.2-2, Versi on 7.2-1xx, Versi on 7.2, Versi on7 . 1 - 2 , V e rs i o n 7 . 1 - 1 Hx , a n d V e r s io n 7 . 1 .- - A n y m i x o f V e r s i o n 7 . 2 , V e r s i o n 7 . 1- x x x , a n d V e r s i on 6 . 2 - x x x .- - A n y m i x o f V e r s i o n 7 . 1 , V e r si o n 7 . 0 , a n d V e r s i on 6 . 2 - x x x .-- Any mi x of Versi on 6.2-xxx wi th OpenVMS VAX Versi on 5.5-2, Versi on 6.0, Versi on 6.1 andOpenVMS Alpha Versi on 1.5, Versi on 6.0, Versi on 6.1.




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Mig ration support means that HP has qualified the two architectures and versions for use tog ether inconfi gurati ons that are mi grati ng i n a staged fashi on to a hi gher versi on of OpenVMS or to Alphasystems. HP will answer problem reports submitted about these config urations. However, in exceptionalc a s e s , H P m a y r e c o m m e n d t h a t y o u m o v e y o u r s y s t e m t o a w a r r a n t e d c o n f i g u r a t i o n a s p a r t o f t h esoluti on.

N O T E : H P d o e s n o t s u p p o r t t h e u s e o f m o r e t h a n t w o v e r s i o n s o f O p e n V M S s o f t w a r e i n t h e s a m eOpenVMS Cluster at the same time. However, in many cases, running more than two versions or mixingversions not described above will operate satisfactorily.

HP recommends that all Alpha and VAX systems in an OpenVMS Clusterrun the latest version ofO p e n V M S .

DECnet Software D E C n e t s o f t w a r e i s n o t r e q u i r e d i n a n O p e n V M S C l u s t e r c o n f i g u r a t i o n . H o w e v e r , D E C n e t s o f t w a r e i snecessary for internode process- to- process communication that uses DECnet mailboxes.The OpenVMS Version 6.2- 1H3 Monitor utility uses DECnet for intracluster communication.The OpenVMS Version 7.1 (and hig her) Monitor utility uses TCP/IP orDECnet based transports, asappropriate, for intracluster communication.R e f e r t o t h e a p p r o p r i a t e H P D E C n e t S o f t w a r e P r o d u c t D e s c r i p t i o n f o r f u r t h e r i n f o r m a t i o n .

D E C a m d s D E C a m d s r e q u i r e s H P D E C w i n d o w s M o t i f f o r O p e n V M S . F o r d e t a i l s , r e f e r t o t h e D E C w i n d o w s M o t i f f o r OpenVMS Software Product Description (SPD 42.19.xx).

O p t i o n a l S o ft w a r eF o r i n f o r m a t i o n a b o u t O p e n V M S C l u s t e r s u p p o r t f o r o p t i o n a l s o f t w a r e p r o d u c t s , r e f e r t o t h e O p e n V M S C l u s t e r S u p p o r t s e c t i o n o f t h eS o f t w a r e P r o d u c t D e s c r i p t i o n s f o r t h o s e p r o d u c t s .Optional products that may be useful in OpenVMS Cluster systems include:

Volume Shadowi ng for OpenVMS (SPD 27.29.xx)RAID Software for OpenVMS (SPD 46.49.xx)D E C r a m f o r O p e n V M S ( S P D 3 4 . 2 6 . x x )

VAX cluster Console System (SPD 27.46 .xx)

G r o w t h Co n s i d er a t i o nT h e m i n i m u m h a r d w a r e a n d s o f t w a r e r e q u i r e m e n t s f o r a n y f u t u r e v e r s i o n o f t h i s p r o d u c t m a y b e d i f f e r e n t t h a n t h e r e q u i r e m e n t s f o r t h ec u r r e n t v e r s i o n .

D i s t r i b u t i o n M ed i aOpenVMS Cluster Software is distributed on the same distribution media as the OpenVMS Operating System. For more information,refer to the OpenVMS Operating System for VAX and Alpha SPD.




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O r d e ri n g I n f or m a ti o nOpenVMS Cluster Software is orderable as follows:Every server (nonclient) Alpha system in an OpenVMS Cluster config uration requires:

VMSclust er Software for OpenVMS Alpha

- - S o f t w a r e L i c e n s e s : Q L - M U Z A * - A A- - Software Product Services: QT- MUZ A*- **- - LMF PAK Name: VMSCLUSTER

N O T E : VMScluster Software for OpenVMS Alpha provi des a uni que orderi ng and pri ci ng model for si ngle-CPU and dual-CPUc a p a b l e s y s t e m s . S p e c i f i c a l l y , a l l A l p h a S e r v e r D S - s e r i e s s y s t e m s , a l o n g w i t h A l p h a S e r v e r 8 0 0 a n d 1 2 0 0 s y s t e m s , s h o u l d u s e t h e Q L -M U Z A C - A A l i c e n s e o r d e r n u m b e r ; f o r s e r v i c e , u s e t h e c o r r e s p o n d i n g Q T - M U Z A C - * * o r d e r n u m b e r . F o r a l l r e m a i n i n g A l p h a S e r v e r s y s t e m s i n t h e W o r k g r o u p s y s t e m c l a s s ( s u c h a s t h e E S 4 0 ) , u s e t h e s t a n d a r d Q L - M U Z A E - A A l i c e n s e o r d e r n u m b e r ; f o r s e r v i c e , u s e t h ecorresponding QT- MUZ AE- ** order number. VMScluster pricing and ordering for the remaining system classes of AlphaServers areu nchang ed.

Every server (nonclient) VAX system in an OpenVMS Cluster config uration requires:

VAX clus ter Software for OpenVMS VAX--Software Li censes: QL-VBR A*-AA- - Software Product Services: QT- VBRA*- **- - L M F P A K N a m e : V A X C L U S T E R

OpenVMS Cluster Client Software is available as part of the NAS150 product. It is also separately orderable for DS SeriesAlphaServers.

VMScluste r Client Software for OpenVMS Alpha-- Software Li censes: QL-3MR A*-AA-- Software Mi grati on Li censes: QL-6J7A*-AA- - Software Product Services: QT- 3MRA*- **- - LMF PAK Name: VMSCLUSTER- CLIENT

Denotes vari ant fi elds. For addi ti onal i nformati on on avai lab le li censes, servi ces, and medi a, refer to the appropri ate pri cebook.The ri ght to the functi onali ty of the DECamds and Avai lab i li ty Manager avai lab i li ty management software i s i ncluded i n all thel i c e n se s i n t h e p r ec e d i n g l i s t.




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D o c u m en t a t i o nThe following manuals are included in the OpenVMS hardcopy documentation as part of the full documentation set:

O p en V MS C l us t er S y st e msGuidelines for OpenVMS Cluster Config urations

D E C a m d s U s e r ' s G u i d eAvai lab i li ty Manager User's Gui de

Refer to the hp OpenVMS Operating System for VAX and Alpha Software Product Description (SPD 25.01.xx) for additionalinformation about OpenVMS documentation and how to order it.Specific terms and conditions reg arding documentation on media apply to this product. Refer to HP's terms and conditions of sale, asfollows:" A s o f t w a r e l i c e n s e p r o v i d e s t h e r i g h t t o r e a d a n d p r i n t s o f t w a r e d o c u m e n t a t i o n f i l e s p r o v i d e d w i t h t h e s o f t w a r e d i s t r i b u t i o n k i t f o r u s eby the licensee as reasonably required for licensed use of the software. Any hard copies or copies of files g enerated by the licenseemust include HP's copyrig ht notice. Customization or modifications, of any kind, to the software documentation files are not permitted.C o p i e s o f t h e s o f t w a r e d o c u m e n t a t i o n f i l e s , e i t h e r h a r d c o p y o r m a c h i n e r e a d a b l e , m a y o n l y b e t r a n s f e r r e d t o a n o t h e r p a r t y i nconjunction with an approved relicense by HP of the software to which they relate."

S o ft w a r e L i c en s i n gThis software is furnished under the licensing provisions of Hewlett- Packard Company's Standard Terms and Conditions. For morei nformati on ab out HP's li censi ng terms and poli ci es, contact your local HP offi ce.

L i c e n s e M a n a g e m e n tFacility Support

T h e O p e n V M S C l u s t e r S o f t w a r e p r o d u c t s u p p o r t s t h e O p e n V M S L i c e n s e M a n a g e m e n t F a c i l i t y ( L M F ) .License units for this product are allocated on an Unlimited System Use basis.F o r m o r e i n f o r m a t i o n a b o u t t h e L i c e n s e M a n a g e m e n t F a c i l i t y , r e f e r t o t h e h p O p e n V M S O p e r a t i n g S y s t e mfor VAX and Alpha Software Product Description (SPD 25.01.xx) or documentation set.

So f tw a r e P r o d u c t Se r v i c e sA variety of service options are available from HP. For more information, contact your local HP office.

Software WarrantyThis software is provided by HP with a 90 day conformance warranty in accordance with the HP warranty terms applicable to theli cense purchase.The above information is valid at time of release. Contact your local HP office for the most up- to- date information.

Copyrig ht 2003 Hewlett- Packard Development Company, L.P.

T h e i n f o r m a t i o n c o n t a i n e d h e r e i n i s s u b j e c t t o c h a n g e w i t h o u t n o t i c e .T h e o n l y w a r r a n t i e s f o r H P p r o d u c t s a n d s e r v i c e s a r e s e t f o r t h i n t h e e x p r e s s w a r r a n t y s t a t e m e n t s a c c o m p a n y i n g s u c h p r o d u c t s a n ds e r v i c es . N o t h i n g h e r e i n s h o u ld b e c o n s t r ue d a s c o n s t i t u ti n g a n a d d i t i o n a l w a r r a n ty . H P s h a l l n o t b e l i a b l e f o r t e c h n i c a l o r e d i t o r i a lerrors or omi ssi ons contai ned herei n.


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