Offline Controller

What Caused the Problem?
The controller was placed Offline. This could be caused by the following:

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
Logical Drives assigned to the Offline controller have been moved to the Storage Subsystem's Online controller.

Recovery Steps
1
If... Then...
The controller was manually placed Offline Place the controller back Online by highlighting the controller in the Physical View of the Subsystem Management Window and selecting Controller>>Place Online.

Go to step 2.

The controller was NOT manually placed Offline
a
Remove the defective controller. The defective controller is listed in the Details area.

Note:
Before you insert a new controller canister into a Directly Managed Storage Subsystem (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 removed controller.
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 Storage System Planning Guide.
b
Make sure at least 1 minute has elapsed; then, insert a new controller canister firmly into place.
c
If... Then...
The controllers for this Storage Subsystem are located in an enclosure containing both controllers and drives The new controller's cache battery age must be reset. To reset the battery age, select the Components button on the enclosure containing the controllers in the Physical View of the Subsystem Management Window. Highlight the Batteries option and select the Reset button associated with the new controller canister. Go to Step 2.
The controllers for this Storage Subsystem are located in an enclosure containing only controllers Go to Step 2.
2 Note the controller slot of the affected controller listed in the Details area above. Highlight this controller slot in the Physical View of the Subsystem Management Window, then select Controller>>Change Mode.
If... Then...
The controller's Mode is Passive Change the controller to Active. Then, go to Step 3.
The controller's Mode is Active Go to Step 3.
3 Locate the Automatic Logical Drive Transfer (ADT) entry in the Storage Subsystem Profile. To open the profile select the Storage Subsystem>>Profile menu option from the Subsystem Management Window.

If... Then...
The Auto Logical Drive Transfer (ADT) entry is set to Disabled

OR

You ARE NOT running a host based, multi-path driver

Redistribute the logical drives to their preferred controller by selecting Storage Subsystem>>Redistribute Logical Drives from the Subsystem Management Window.

Go to Step 4.

The Auto Logical Drive Transfer (ADT) entry is set to Enabled

AND

You ARE running a host based, multi-path driver

No action is required.

The host based, multi-path driver will automatically initiate a transfer of logical drives to their preferred controller.

Note that detection of a restored preferred path by the multi-path driver can take up to 10 minutes.

Go to Step 4.

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