Storage Area Network and Network Attached Storage concepts.

1. Eric Vanderburg
JurInnov, Ltd.
February 15, 2008

2. Basic SAN Concepts
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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, Snapshots
Scalability - Larger physical disk arrays and
larger LUs
Reliability – Hot spares, additional management
options and monitoring.
Storage economies of scale

3. SAN Connectivity
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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.

4. TagmaStore Midrange Line
AMS200
Throughput
4GB Cache
WMS100
2GB Cache
Fibre Channel or
iSCSI Attach
Fibre Channel or
ra
pg
U
iSCSI Attach
de
Mix Up to 105 SATA
And Fibre Channel Disks
Up to 49.8TBs
e
r ad
g
Up
AMS1000
AMS500
16GB Cache
8GB Cache
Fibre Channel or iSCSI Attach
Fibre Channel or iSCSI Attach
Mix Up to 450 SATA
Up to 512 LUNs
Mix Up to 225 SATA
And Fibre Channel Disks
Up to 512 Hosts
And Fibre Channel Disks
Up to 208TBs
Up to 1048TBs
Up to 4096 LUNs
Up to 105 SATA
Disks
Up to 49.8TBs
Up to 512 LUNs
Up to 512 Hosts
Up to 2048 LUNs
Scalability
Up to 512 Hosts
Up to 1024 Hosts

5. Tagmastore Adaptable Modular Storage
Model AMS200
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Single or dual controller
AMS200
 Cache size: 1GB to 4GB
(1 SIMM per controller, 1GB/2GB SIMMs supported)
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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
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Flexible connectivity
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4 FC Ports
○ Cost-effective 1Gbit/s or 2 Gbit/s mini-hub architecture with
2 ports SAN or 4 ports direct connect
○ Optional full SAN 1Gbit/s, 2Gbit/s, 4Gbit/s connectivity with
4 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
3U trays
15 disk drives/tray
4U controller
with 15 disk drives

6. Hardware
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Essential NAS
Up to 512 Shares
16TB each filesystem
12 data ports
Clustered
4 fiber interfaces
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Qlogic HBAs
QLE2462
QLE2460

8. Creating LUs
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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]

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

10. Basic NAS Concepts
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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.

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

12. Terminology
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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)