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One dual-controller DS3200 and three storage expansion
enclosures
To cable one dual-controller DS3200 and three storage expansion enclosures,
connect them as shown in Figure 22.
Adding a storage expansion enclosure to a dual-controller
configuration that is running
The following procedures provide instructions for adding storage expansion
enclosures to a dual-controller DS3200 storage subsystem that is running.
Note: Make sure that each storage expansion enclosure has two ESMs before you
connect it to a dual-controller DS3200 storage subsystem. The second ESM
must be purchased separately. Contact your IBM marketing representative or
authorized reseller for more information about purchasing a second ESM.
For more information about installing a second ESM, see the Installation
Guide that comes with the storage expansion enclosure.
To add a storage expansion enclosure to a dual-controller DS3200 storage
subsystem that is running, complete the following steps:
1. Make sure that the DS3200 storage subsystem status is Optimal in the
Storage Manager software.
2. Use the storage expansion enclosure Rack Installation Instructions document
to install the new storage expansion enclosure in the rack.
3. Connect the power cables to the new storage expansion enclosure.
DS3200
SAS cable
SAS cable
EXP3000
To DS3200 RAID
controller A
To DS3200 RAID controller B
SAS cable
SAS cable
EXP3000
SAS cable
SAS cable
EXP3000
RAID controller BRAID controller A
Figure 22. One dual-controller DS3200 and three storage expansion enclosures
Chapter 3. Cabling the storage subsystem 31