ESM canister miswire

Two ESM canisters in the same drive tray are connected to the same Fibre Channel loop. The Recovery Guru Details area provides specific information you will need as you follow the recovery steps.

CAUTION:
Possible loss of data accessibility. It is very important that you resolve this miswire problem along with any other miswire problem that is reported in the Summary Area before attempting to resolve any other problem that is being reported in the Summary Area. Resolving non-miswire problems with miswire problems still present can lead to a loss of data accessibility.
CAUTION:
Risk of Data Loss. It is highly recommended that you suspend all I/O before performing this procedure. Removing cables from a working storage array can cause data loss. If you are not familiar with your cabling configuration, contact your Technical Support Representative.
Important: When two ESM canisters in the same drive tray are connected to the same Fibre Channel loop, a level of redundancy is lost and the I/O performance for this drive tray will be reduced.

Recovery Steps

  1. Review the Recovery Guru Details area to identify which drive tray's ESM canisters are connected to the same Fibre Channel loop. The following diagrams show common miswire configurations:

  2. Reconnect the cables so that the ESM canisters are on different Fibre Channel loops. Use the interface cable routing examples in the hardware cabling guide as a reference.

  3. Click the Recheck button to rerun the Recovery Guru. The failure should no longer appear in the Summary area. If the failure appears again, contact your Technical Support Representative.