JAXA Archive ActivityJAXA Archive Activity September 2005 Ukraine KyivSeptember 2005 Ukraine Kyiv

JAXA/EORC JAXA/EORC Kengo AizawaKengo Aizawa

JAXA/EORCJAXA/EORC Osamu OchiaiOsamu Ochiai

BackgroundBackground

JAXA started to design a new JAXA started to design a new Archive/Information system for GOSAT and Archive/Information system for GOSAT and following satellites.following satellites.

JAXA haveJAXA have two of archive/information two of archive/information system. They are not match new request.system. They are not match new request.

ObjectiveObjective

New archive system aimsNew archive system aims

Upgrade system performance (Quick data Upgrade system performance (Quick data access for quick distribution) access for quick distribution)

Effective Disk UtilizationEffective Disk Utilization Reduce maintenance, operation costReduce maintenance, operation cost Vender independent (limited for SAN DISK part)Vender independent (limited for SAN DISK part)

to be a vender to be a vender independent..independent..

We studied SMI-S specification and confirmed it We studied SMI-S specification and confirmed it just applied to SAN environment not to tape just applied to SAN environment not to tape machine.machine.

SMI-S is an interface standard that enables SMI-S is an interface standard that enables interoperability both hardware and software between interoperability both hardware and software between storage products from different vendors that an storage products from different vendors that an

enterprise would use in a SAN environmententerprise would use in a SAN environment..

ConceptConcept

To satisfy the objectives we adopt To satisfy the objectives we adopt

Information Lifecycle Management Information Lifecycle Management (ILM) for Storage system (ILM) for Storage system

What’s ILM ?What’s ILM ?

ILM is a Management that matches data to the ILM is a Management that matches data to the change in the importance degree from generation change in the importance degree from generation to the to the

deletion and stores it in appropriate storage.deletion and stores it in appropriate storage.

Data is classified according to informational worth.Data is classified according to informational worth.

Required availability and performance are Required availability and performance are efficiently secured for every data by storage efficiently secured for every data by storage arranged hierarchicallyarranged hierarchically

Information Lifecycle in Information Lifecycle in generalgeneral

Time Time

1st 　 stageHigh freq access

2nd 　 stageMiddle freq access

3rd 　stageLow freq access

4th 　 stageNo accessSemi permanent preservation

Wort

h

Wort

h

to apply archive system..to apply archive system..

1st 　 stageHigh freq accessHigh speed High reliableexpensiveDISK

2nd 　 stageMiddle freq accessmiddle speedmiddle reliable Low-costDISK

3rd 　 stageLow freq accesslow speed High reliableLow-costMedia

Generated Products

4th 　 stageSemi permanent preservation

to apply archive to apply archive system..system..

classify EO data into some groups by its classify EO data into some groups by its characterscharacters

detention period on each stage will be detention period on each stage will be decided by the groupdecided by the group

2nd stage

1st stage 3rd stage

Group AGroup A

Group BGroup B

Group CGroup C

archive system looks archive system looks

as..as..

HSM software　

　　　 archive system looks as a huge virtual storage

　　archive　system　

System System comparison comparison

Array Disk Robotics tapeArray Disk Robotics tapeEOIS 4TB (DAS) 400TB EOIS 4TB (DAS) 400TB system hold 3days hold foreversystem hold 3days hold forever ALOS 4TB (DAS) 200TBALOS 4TB (DAS) 200TBSystem hold System hold １１ dayday 　 　 hold forever hold forever New 100TB(SAN) 700TBNew 100TB(SAN) 700TBSystem depend on data hold foreverSystem depend on data hold forever

PlanPlan

Basic design for new Basic design for new archive/Information system will be archive/Information system will be done by end of March 2006.done by end of March 2006.

New system will apply to GOSAT, New system will apply to GOSAT, Research use. Research use.