Failed ESM Canister

What Caused the Problem?

An ESM canister has failed in a drive enclosure. The Recovery Guru Details area provides specific information you will need as you follow the recovery steps.

 Caution: Possible loss of data accessibility. Do not remove a component when either (1) the Service action (removal) allowed (SAA) field in the Details area of this recovery procedure is NO (), or (2) the SAA LED on the affected component is OFF (note that some products do not have SAA LEDs). Removing a component while its SAA LED is OFF may result in temporary loss of access to your data. Refer to the following Important Notes for more detail.

 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.

Important Notes

Recovery Steps

1
If... Then...
You see logical drive failures, channel failures or unassigned drive failures associated with the drive enclosure reporting the failed ESM canister Contact your technical support representative. DO NOT perform steps 2 - 9.

 Caution: Risk of Data Loss. Recovery from a failed ESM canister with associated logical drive and drive failures is a complicated procedure that if done incorrectly, could result in the loss of data. Therefore, you should not attempt to perform any recovery steps without the help of your technical support representative.

You DO NOT see logical drive failures, channel failures or unassigned drive failures associated with the drive enclosure reporting the failed ESM canister Go to step 2.
2 Check to make sure there is power to the drive enclosure and that the external drive cables are secure.

 Caution: Risk of Data Loss. Disconnecting drive enclosure cables to the remaining optimal ESM canister while I/O is in progress can cause data loss!

If... Then...
There is a problem with the power or drive cables Correct the problem, then go to step 9.
The power and drive cables are OK Go to step 3.
3 Refer to the Details area to identify the failed ESM.

 Caution: Risk of Data Loss. Make sure you correctly identify the failed canister. If you have two canisters, removing the remaining optimal canister while I/O is in progress can cause loss of access to data!

4 Reseating the affected ESM canister may clear the failure being reported. While the cables are still connected to the canister, remove the canister from the drive enclosure, wait 10 seconds, and re-insert the canister firmly. Wait 40 seconds, then click the Recheck button to rerun the Recovery Guru to ensure the failure has been fixed.
If... Then...
This failure is no longer reported in the Summary area You are finished with this procedure.
A failed ESM canister is still reported Go to step 5.
5
If... Then...
The cables are connected directly to the ESM canister Label each cable to ensure that they are properly reconnected when the ESM canister is replaced.

Remove the cables.

Go to step 6.

The cables are connected to an interface transceiver such as an SFP Label each interface transceiver to ensure that they are properly reconnected when the ESM canister is replaced.

Leave the cables connected and remove the interface transceivers from the ESM canister.

Go to step 6.

6 Replace the failed ESM canister. Make sure that the replacement canister is the same as the canister that is remaining in the drive enclosure (hardware type and firmware version).
7 Using the labels created in step 5, reconnect the cables to the replaced canister. Wait 40 seconds, then go to step 8.
8 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.