ESM Hardware Type Mismatch
What Caused the Problem?
A drive enclosure in the storage subsystem contains ESM canisters with different hardware (such as a mixture of switched and non-switched ESMs or a SATA ESM and a Fibre Channel ESM). 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
- Service Action Allowed Important Information:
- The Service action (removal) allowed field in the
Details area indicates whether or not you can safely remove the component. If the SAA field is NO (
), then the affected component
must remain in place until you service another component first.
- The Service action LED on Component field in the
Details area indicates whether or not a physical SAA LED is present on the hardware component. This field does NOT indicate whether the LED is ON or OFF (that indication is provided by the Service action (removal) allowed field).
- If a component does not have an SAA LED, then it is OK to remove the component when its fault LED is lit and the Service action (removal) allowed field = YES (
) in the
Details area.
- The Service action (removal) allowed field shown in the
Details area and the physical SAA LED on the hardware component (if supported) MUST match before you remove the affected component. In rare cases (such as multiple problems), the status of the LED and the SAA field may not match. If there is a mismatch, then you should NOT remove the component until these indications match.
- Both ESM canisters in the same drive enclosure must be of the same hardware type and have the same firmware version.
- The ESM canisters should contain a label to differentiate between the different hardware types. Make sure that the label on both ESMs match when you replace one of the ESM canisters.
- An ESM canister hardware type mismatch can affect how the storage subsystem reports existing arrays and logical drives (some of them may not display).
Recovery Steps
1 |
The ESM firmware and hardware information is available in the Storage Subsystem Profile.
a |
Refer to the Recovery Guru Details area to see which drive enclosure is affected by the mismatch. |
b |
Access the Storage Subsystem Profile and then select the Enclosure information. |
c |
Scroll down until you find the following heading:
Drive Enclosure x Overall Component Information
where x is the drive enclosure number listed in the Recovery Guru Details area.
|
d |
Under each ESM Canister subheading, locate and record the following information for each ESM (left and right): Firmware version:
Product ID:
Part number:
|
|
2 |
If... |
Then... |
You do NOT have a replacement ESM canister or are unable to determine if you have a replacement ESM canister with the same firmware version and hardware type as one of the canisters in the affected enclosure |
Contact your technical support representative. |
You have a replacement ESM canister with the same firmware version and hardware type as the canister that will remain in the affected enclosure |
Read the following notes and then perform the procedure:
- Make sure you have determined which ESM canister should remain in the drive enclosure.
- Make sure that the replacement ESM canister is the same as the ESM that will remain in the drive enclosure (hardware type and firmware version).
- Wait approximately 40 seconds before inserting a replacement ESM canister.
- Wait 10 seconds for the storage subsystem to detect and register the replacement ESM canister.
Remove one of the ESM canisters in the affected enclosure and insert a replacement ESM. Then, go to step 3.
|
|
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. |