Fastt500 Raid Controller Multi-Mscs Extended; Fastt500 Raid Controller Cornhusker Configuration - IBM TotalStorage DS4000 Hardware Maintenance Manual

Notes:
Figure 38. FAStT500 RAID controller multi-MSCS extended
Figure 39. FAStT500 RAID controller cornhusker configuration
54
IBM TotalStorage DS4000: Hardware Maintenance Manual
- Each group of 4 ports on the switches ( red dash box
- Storage partitioning is used to separate clusters
- 16 port switches allow more clusters but this has to be within performance needs and available partitions
FC host adapter
FC host adapter
ID 0
FC host adapter
ID 0
FC host adapter
ID 1
FC host adapter
ID 1
FC host adapter
ID 2
FC host adapter
ID 2
FC host adapter
ID 3
FC host adapter
ID 3
ID 4 ID 4 ID 5 ID 5
FAStT500 RAID Controller Unit
Host side
Mini-hub
Mini-hub
Mini-hub
Mini-hub
) can support one cluster element (black dash box)
Managed hub 1
ID 0
ID 1
FAStT500 RAID Controller Unit
ID 2
ID 3
Host side
ID 4
Mini-hub
Mini-hub
Managed hub 2
ID 0
ID 1
ID 2
ID 3
Mini-hub
ID 4
Mini-hub
ID 6 ID 6 ID 7 ID 7
Notes: Running Cornhusker Software
Drive side
Ctrl
A
Loop 1
Mini-hub
IN OUT
Mini-hub
Mini-hub
Mini-hub
Ctrl
B
Loop 1
IN OUT
Drive side
EXP500
Ctrl
A
Loop 1
Mini-hub
IN
OUT
Mini-hub
Mini-hub
Mini-hub
Ctrl
B
Loop 1
IN OUT
4 to 8 node configs are supported
Managed hubs can be combined with optional mini-hubs or
use 16 ports switches without the optional mini-hubs
Performance would be best with external 16 port switches
EXP500
Loop 2
IN OUT
Loop 2
IN
OUT
Loop 2
IN
OUT
Loop 2
IN OUT