HP StorageWorks 2000 Modular Smart Array Reference Guide (481599-003, August 2008)

198 HP StorageWorks 2000 Family Modular Smart Array reference guide • August 2008
6. Review the information displayed in the status page.
If the fault relates to a controller module or power module, an image of the
enclosure is displayed.
■ The module is shaded red if it has a fault or is powered off.
■ The module is overlaid with the words “NOT INSTALLED” if it is absent or not
fully inserted.
Stopping I/O
When troubleshooting drive and connectivity faults, ensure you have a current full
backup. As an additional data protection precaution, stop all I/O to the affected
virtual disks. When on-site, you can verify that there is no I/O activity by briefly
monitoring the system LEDs; however, when accessing the storage system remotely,
this is not possible.
To check the I/O status of a remote system, use the Monitor > Statistics > Overall
Rate Stats page. The Overall Rate Stats page enables you to view I/O based on the
host-side activity interval since the page was last refreshed. The page automatically
refreshes at a 60-second interval. The following data is presented for all virtual
disks:
■ The total IOPS and bandwidth for all virtual disks
■ The IOPS and bandwidth for each virtual disk
To use the Overall Rate Stats page to ensure that all I/O has ceased on a remote
system:
1. Quiesce host applications that access the storage system.
2. Select Monitor > Statistics > Overall Rate Stats.
3. Click your browser’s refresh button to ensure that current data is displayed.