San Architecture Must Meet Rpq Criteria; Ibm Storage - IBM SYSTEM STORAGE DS3000 Installation Manual

SAN Architecture must meet RPQ criteria

•
Limit number of paths for Xsan/StorNext clients to four
•
This is to limit both complexity and the amount of time required to initialize clients
on the SAN
•
Redundant Meshed Fibre Channel SAN (cross-connected)
•
RDAC MPP supports this configuration
•
Some IBM documentation may seem to preclude this, but those documents are
based on an old non-"mpp" version of RDAC
•
Limits cause for failover to Controller failure
•
Specific Firmware, software, and Operating System Levels

IBM Storage

•
DS5100/DS5300
•
DS5020
•
DS4700
Burst I/O rate
cache reads
(IOPS)
Sustained I/O rate
disk reads
Sustained I/O rate
disk writes
Drives
Burst throughput
cache read
Sustained
throughput
disk read
Sustained
throughput
disk write
Host ports
Digital Media Storage Solution Installation Guide
© Copyright 2010, IBM Corporation. All rights reserved.
DS3400 DS4700
120,000
110,000
39,250
21,000
9,350
4,500
112 FC/SATA
48 SAS/SATA
1,550MB/s
1,600
980MB/s
925
850 MB/s
720
4
DS5020
200,000
50,000
9,500
112
FC/SATA/FDE
3,700 MB/s
1,600 MB/s
1,400 MB/s
4 4
•
DS3400
•
Future
DS5100
base
performance
650,000
76,000
20,000
256
FC/SATA/FDE
1,600MB/s
1,600MB/s
1,300 MB/s
8
DS5300
enhanced
performance
700,000
170,000
38,000
448
FC/SATA/FDE
/SSD*
(480) SATA*
6,400 MB/s
6,400 MB/s
5,300 MB/s
16
7