Failed Mini-hub Canister

What Caused the Problem?

Communications with the mini-hub canister has been lost. This may be the result of a mini-hub canister failure, a controller failure, or a failure in an internal backplane communications board. If there is only one mini-hub failure, the Storage Subsystem is still operational. The Recovery Guru Details area provides specific information you will need as you follow the recovery steps.

Caution
Electrostatic discharge can damage sensitive components. Use a grounding wrist strap or other anti-static precautions before removing or handling components.

Important Notes

Recovery Steps

1

Remove the failed mini-hub canister (its fault indicator should be on).

2

Insert a new canister securely into place.

3

Select Recheck to rerun Recovery Guru to ensure that the failure has been fixed.

If Then
The failure is fixed. You are done with this procedure.
The failure is not fixed.

Follow the procedure in steps 4 - 9.

Note: If the mini-hub canister has failed on the host side, the Recovery Guru details area will indicate which controller (A or B) is connected to the failed mini-hub canister.

Note: If the mini-hub canister has failed on the drive side, you cannot identify the controller connected to the failed mini-hub. Start by replacing the controller in slot A.

4

In the physical view of the Subsystem Management Window, highlight the controller and select Controller >> Change Mode >> Passive.

Note: The transition to passive may take several minutes. During the transition, arrays assigned to the controller are assigned to the other controller. This does not affect data flow. Wait until the controller changes to Passive before continuing.

5

Remove the failed controller. Wait at least one minute before inserting the new controller.

Note: If the Storage Subsystem is Directly Managed (refer to the Network Management Type column in the Enterprise Management Window), you must update the DHCP/BOOTP server so that it will associate the new controller's hardware Ethernet address with the host name and IP address previously assigned to the failed controller before you go to step 6. To update the DHCP/BOOTP server, find the entry associated with the removed controller and replace its Ethernet address with the new controller's Ethernet address. The controller's Ethernet address is located on an Ethernet ID label on the controller canister in the form xx.xx.xx.xx. If you need more details, consult the installation guide.

6

Insert the new controller firmly into the controller enclosure.

7

Highlight the controller and select Controller >> Change Mode >> Active to make the controller Active.

Note: The transition to Active may take several minutes. Wait until the controller changes to Active before continuing.

8

Remove the mini-hub you just installed, wait 30 seconds, and then install it again.

9

Select Recheck to rerun Recovery Guru to ensure that the failure has been fixed.

If Then
The failure is fixed. Redistribute the logical drives to their preferred controllers by selecting Storage Subsystem >> Redistribute Arrays from the Storage Subsystem Management Window.
The failure is not fixed and the failed mini-hub canister was on the drive side. Replace the controller in slot B using steps 4 - 9.

Note: If you have already replaced the controller in slot B, you may have a problem with the internal backplane communications board. Contact your Customer Support Representative.
The failure is not fixed and the failed mini-hub canister was on the host side. You may have a problem with the internal backplane communications board. Contact your Customer Support Representative.