Adding A Second Sas Enclosure, Second Chain - Dell SC8000 Deployment Manual

Adding a Second SAS Enclosure, Second Chain

In a dual‐controller, single SAS enclosure configuration, controller redundancy is created
using cross‐over cables (IPC) from controller ports 2 to controller ports 4. A second chain
performs the same redundancy as the IPC cross‐over cables.
Add an Enclosure
Add a new enclosure while maintaining redundancy.
1 Power on the enclosures being added. When the enclosures spin up, make sure that the
front panel enclosure and power status LEDs show normal operation.
2 Remove the two IPC cables from the Controllers, ports 2 and 4.
3 Connect: Controller A, port 2→ new Enclosure 3: top, port A.
4 Connect Enclosure 3: top, port B→ Controller B, port 4.
5 In the Storage Center System Manager, select Storage Management→ System→
Setup→ Configure Local Ports.
6 Make sure that:
Slot and slot ports are Up and the Purpose is set to back‐end.

Target Count equals the number of added drives, demonstrating that the controller

recognizes the new enclosures.
Figure 122. Adding an SC200/220 SAS Enclosure, Step 1
Dell Compellent
Controller A
Controller B
Enclosure 1
Enclosure 2
Enclosure 3
Adding SC200/220 Enclosures
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