Recover System Procedure - IBM Storwize V7000 Unified Problem Determination Manual

Recover system procedure

The recover system procedure recovers the entire system if the block cluster state
has been lost from all nodes.The recover system procedure recovers the entire
storage system if the data has been lost from all control enclosure node canisters.
The procedure re-creates the storage system by using saved configuration data. The
recovery might not be able to restore all volume data. This procedure is also
known as Tier 3 (T3) recovery.
Before you perform the storage system recovery you should shutdown the file
modules:
v From a workstation with access to the management subnet, log on to the
v ssh admin@<management IP>
v Use the lsnode CLI command to get the node name of the file module with the
v initnode -n <passive node name> -s
v Wait 10 seconds.
v initnode -s
After you have performed the following storage system recovery procedure then
refer to Turning on the system, located in the Information Center, to power the file
modules back on.
Contact IBM Remote Technical support if the health indicator in the management
GUI does not turn back to green within 30 minutes. They can assist you with
recovering the file modules so that access to the file systems can be restored.
After you perform the storage system recovery procedure, contact IBM support.
They can assist you with recovering the file modules so that access to the file
systems can be restored.
Attention: Perform service actions only when directed by the fix procedures. If
used inappropriately, service actions can cause loss of access to data or even data
loss. Before attempting to recover a storage system, investigate the cause of the
failure and attempt to resolve those issues by using other fix procedures. Read and
understand all of the instructions before performing any action.
Attention: Do not attempt the recovery procedure unless the following conditions
are met:
v All hardware errors are fixed.
v All node canisters have candidate status.
v All node canisters must be at the same level of code that the storage system had
The system recovery procedure is one of several tasks that must be performed. The
following list is an overview of the tasks and the order in which they must be
performed:
1. Preparing for system recovery
management CLI as an administrator. For example, admin default password is
admin.
passive management node role.
before the system failure. If any node canisters were modified or replaced, use
the service assistant to verify the levels of code, and where necessary, to upgrade
or downgrade the level of code.
Chapter 5. Control enclosure
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