IBM System Storage DS4000, Hardware Maintenance Manual

Page: 56 / 184

Multi-MSCS No External Hubs
FC host adapter
FC host adapter
FC host adapter
FC host adapter
FC host adapter
FC host adapter
FC host adapter
FC host adapter
Clus1
Clus2
LD1 LD2
1
2
LD3 LD4
Clus1
Clus2
Notes : 2 partitions shown; Clus1 partition separate from Clus2 partition.
LD is a logical drive
3526
RAID Controller Unit
Ctrl
A
EXP10, 15 or 200
(up to 6 units)
Ctrl
B
Managed Hub/Switch
Managed Hub/Switch
Figure 16. Type 3526 fibre channel RAID controller multi-MSCS no external hubs
FC
Switches
Multi-MSCS extended
FC host adapter
FC host adapter
FC host adapter
FC host adapter
Notes :
- Each group of 4 ports on the switches ( ) can support one cluster element ( ) red dash box black dash box
- Storage partitioning is used to separate clusters
- Match performance needs of servers to max I/o available from 60 drives
- You may use some the switch ports to add 3526 units rather than hosts. Extending this to 16 port switches allows more of both
3526
RAID Controller Unit
Ctrl
A
EXP10, 15 or 200
(up to 6 units)
Ctrl
B
Figure 17. Type 3526 fibre channel RAID controller multi-MSCS extended
28
IBM TotalStorage DS4000: Hardware Maintenance Manual