Drive Enclosures Not Cabled Correctly

What Caused the Problem?

There are drive enclosures in the storage subsystem that are not cabled correctly because they have ESM canisters that must be cabled sequentially together. The Recovery Guru Details area provides specific information you will need as you follow the recovery steps.

Important Notes

 Caution: Electrostatic discharge can damage sensitive components. Always use proper antistatic protection when handling components. Touching components without using a proper ground may damage the equipment.

 Caution: Potential loss of data access. If the affected drive enclosures are connected to the controller using multiple drive channels, make sure that you re-cable only one drive channel at a time. Failure to do so will result in loss of access to the data on these drives.

Recovery Steps

1

Physically locate the drive enclosures listed in the Details area of this procedure.

2

Trace the drive channel cables from the controller to the associated ESM canisters on the affected drive enclosures.

Important: If the drive enclosures are cabled to the controller using multiple drive channels, make sure that you re-cable only one drive channel at a time (see Caution statement above).

3 Record the current cabling scheme by noting (2) the entry points into the drive enclosures from the drive channels on the controller and (2) how the affected drive enclosures are connected to the other drive enclosures in the storage subsystem
4 Starting with one of the drive channels, disconnect the cables to the ESMs in the affected drive enclosures.
5 Reconnect the cables making sure that the ESMs in the affected drive enclosures are cabled sequentially together and that there are connections to the other drive enclosures in the storage subsystem.
6 If you have more than one drive channel, repeat steps 4 and 5 in the reverse order that you connected the first drive channel (for example, if you connected the first drive channel to drive enclosures 1, 2, 3, and 4; then, connect the second drive channel to drive enclosures 4, 3, 2, and 1). Then, go to step 7.
7

Click the Recheck button to rerun the Recovery Guru. The failure should no longer appear in the Summary area. If the failure appears again, recheck your cabling and, if necessary, contact your technical support representative.