Communication has been lost to one of the dual ESM canisters in a drive enclosure. The drive enclosure has only one I/O path available. The Recovery Guru Details area provides specific information you will need as you follow the recovery steps.
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.
1 |
Fix any other problems reported by the Recovery Guru before attempting to fix this problem. |
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2 |
To determine the non-working channel, start at the drive channel on the controller enclosure corresponding to the working channel (refer to the labels on the back of the controller enclosure if needed). |
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3 |
Trace the cable from the working channel to the optimal ESM canister in the affected drive enclosure.
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4 |
Locate the other ESM canister in the affected drive enclosure (this is the canister on the non-working channel). |
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5 |
Reseating the ESM canister on the non-working channel may clear the failure being reported.
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6 |
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7 |
Repeat step 5 to check the Service action (removal) allowed status for the ESM, and then replace the ESM canister on the non-working channel using the following notes:
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8 |
Reconnect the cable or interface transceiver to the replaced ESM canister and wait 40 seconds. If a "Degraded Drive Channel" problem is also being reported in the Summary area, then go to step 9; otherwise, go to step 10. |
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9 |
Select the Advanced >> Troubleshooting >> Drive Channels pull-down menu option, highlight the degraded drive channel, and then click the Set Optimal button.
Note: The drive channel status may automatically be reset to Degraded if the controller again determines that the channel is not operating properly. |
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10 | 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. |