IBM System Storage DS3300

One single-controller DS3300 and one or more storage
expansion enclosures
To cable one single-controller DS3300 to one or more single-ESM storage
expansion enclosures, connect them as shown in Figure 16.
Note: To support dual redundant drive paths, you must install the optional second
ESM in storage expansion enclosures that are connected to a dual-controller
storage subsystem. You must use one of the dual-controller topologies that
are described in this section.
DS3300
SAS cable
EXP3000
To DS3300 RAID
controller A
SAS cable
EXP3000
SAS cable
EXP3000
RAID controller A
Figure 16. One single-controller DS3300 and multiple single-ESM storage expansion
enclosures
28 System Storage DS3300 Storage Subsystem: Installation, User’s, and Maintenance Guide