Clearing Disk Metadata; Restarting Or Shutting Down Controllers; Restarting - HP P2000 G3 Reference Manual

Clearing disk metadata

Each disk has metadata that identifies whether the disk is a member of a vdisk, and identifies other
members of that vdisk. If a disk's metadata says the disk is a member of a vdisk but other members'
metadata say the disk isn't a member, the disk becomes a leftover. The system overview and enclosure
overview pages show the disk's How Used value as LEFTOVR. A leftover disk's Fault/UID LED is illuminated
amber.
Before you can use the disk in a new vdisk or as a spare, you must clear the disk's metadata.
To clear metadata from leftover disks
1. In the Configuration View panel, right-click the system and then select Tools > Clear Disk Metadata.
2. In the main panel, select disks to clear metadata from.
3. Click Clear Metadata. When processing is complete a success dialog appears.
4. Click OK.

Restarting or shutting down controllers

You can restart the processors in a controller module when SMU informs you that you have changed a
configuration setting that requires restarting or when the controller is not working properly. Shut down the
processors in a controller module before you remove it from an enclosure, or before you power off its
enclosure for maintenance, repair, or a move.
A restart can be performed on either the Storage Controller processor or the Management Controller
processor. A shut down affects both processors.

Restarting

If you restart a Storage Controller, it attempts to shut down with a proper failover sequence, which includes
stopping all I/O operations and flushing the write cache to disk, and then the controller restarts. The
Management Controller is not restarted so it can provide status information to external interfaces.
If you restart a Management Controller, communication with it is lost until it successfully restarts. If the
restart fails, the partner MC remains active with full ownership of operations and configuration information.
CAUTION: If you restart both controller modules, you and users lose access to the system and its data until
the restart is complete.
To perform a restart
1. In the Configuration View panel, right-click the local system and select Tools > Shut Down or Restart
Controller.
2. In the main panel, set the options:
• Select the Restart operation.
• Select the type of controller processor to restart.
• Select whether to restart the processor in controller A, B, or both.
3. Click Restart now. A confirmation dialog appears.
4. Click Yes to continue; otherwise, click No. If you clicked Yes, a second confirmation dialog appears.
5. Click Yes to continue; otherwise, click No. If you clicked Yes, a message describes restart activity.
NOTE:
in the Windows event log: A connection to the target was lost, but Initiator
successfully reconnected to the target.
If an iSCSI port is connected to a Microsoft Windows host, the following event is recorded
HP StorageWorks P2000 G3 MSA System SMU Reference Guide 83