Eric Vanderburg

JurInnov, Ltd.

February 15, 2008

Basic SAN Concepts The SAN is used to take local storage

away from the local subsystem and put it into a machine with more capabilities.

Capabilities include:Flexibility - More RAID options, Tiered storage,

Remote replication, SnapshotsScalability - Larger physical disk arrays and

larger LUsReliability – Hot spares, additional management

options and monitoring. Storage economies of scale

SAN Connectivity The SAN uses the Fibre Channel protocol. Network nodes use HBAs to connect to a

Fiber switch fabric which then connects to the SAN controllers. WWNs are the physical addresses used in Fibre Channel.

Switches are zoned to allow communication to occur between designated hosts only.

Speeds range from 2-8Gbps. HDLM software used for path failover and load

balancing. It is Hitachi’s form of MPIO.

TagmaStore Midrange Line

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Scalability

WMS100

2GB Cache

Fibre Channel or

iSCSI Attach

Up to 105 SATA

Disks

Up to 49.8TBs

Up to 512 LUNs

Up to 512 Hosts

AMS200

4GB Cache

Fibre Channel or

iSCSI Attach

Mix Up to 105 SATA

And Fibre Channel Disks

Up to 49.8TBs

Up to 512 LUNs

Up to 512 Hosts

AMS500

8GB Cache

Fibre Channel or iSCSI Attach

Mix Up to 225 SATA

And Fibre Channel Disks

Up to 1048TBs

Up to 2048 LUNs

Up to 512 Hosts

AMS1000

16GB Cache

Fibre Channel or iSCSI Attach

Mix Up to 450 SATA

And Fibre Channel Disks

Up to 208TBs

Up to 4096 LUNs

Up to 1024 Hosts

Upgrade

Upgrade

Tagmastore Adaptable Modular StorageModel AMS200 Single or dual controller

Cache size: 1GB to 4GB (1 SIMM per controller, 1GB/2GB SIMMs supported)

FC and SATA intermix Base (w/15HDDs) and up to 6 additional trays 15 disk drives per additional tray 105 total disk drives (maximum configuration, RAW)

○ 73GB, 146GB or 300GB FC drives = 30.2TB○ 250GB, 400GB or 500GB SATA drives = 47TB

RAID levels: 6, 5, 1+0, 1, 0** LUNs maximum: 512

Flexible connectivity 4 FC Ports

○ Cost-effective 1Gbit/s or 2 Gbit/s mini-hub architecture with2 ports SAN or 4 ports direct connect

○ Optional full SAN 1Gbit/s, 2Gbit/s, 4Gbit/s connectivity with4 ports SAN or direct connect

Maximum 512 virtual ports per storage system with Host Storage Domains

○ 128 virtual ports per physical port 2 x 2Gbit/s FCAL Loop for backend connection

○ One loop per controller

** RAID-0 available on FC drives only

AMS200

3U trays15 disk drives/tray

4U controllerwith 15 disk drives

Hardware

Essential NASUp to 512 Shares16TB each filesystem12 data portsClustered4 fiber interfaces

Qlogic HBAsQLE2462QLE2460

Creating LUs Determine size of LU, type of space

needed, and available space in RAID groups.

Create LU in Storage Navigator Format LU Assign LU to host group (multiple host

groups if using HDLM) View LU in host operating system in disk

manager [Demonstration]

Zoning

Login to brocade (72,73) Select Zone Administration Create new zone or edit a zone Enable config [Demonstration]

Basic NAS Concepts The NAS uses network protocols such

as NFS or SMB/CIFS to allow access to data over traditional LAN topologies such as Ethernet.

What we use is called a NAS head as it is an alternate method for interfacing with SAN based storage rather than a storage device in and of itself. It translates block-level SAN protocols to file-level NAS protocols.

NAS Shares and Filesystem Creating a file system Creating a share Basic Troubleshooting (cluster mgmt)

Terminology SAN (Storage Area Network) NAS (Network Attached Storage) FC (Fibre Channel) RAID (Redundant Array of Inexpensive Disks) NFS (Network File System) – Linux SMB (Server Message Block) - Windows CIFS (Common Internet File System) – SMB LU (Logical Unit) LUN (Logical Unit Number) HBA (Host Bus Adapter) WWN (World Wide Name) HDLM (Hitachi Dynamic Link Manager) MPIO (Multipath I/O)