HP Array Controller HSG V8.7 Software - Manual (Page 157)

Troubleshooting 4–3
7. Check the status of the devices with the following command:
SHOW DEVICES FULL
Look for errors such as “misconfigured device” or “No device at this
PTL.” If a device reports misconfigured or missing, check its status
with the following command:
SHOW device-name
8. Check the status of the storagesets with the following command:
SHOW STORAGESETS FULL
Ensure that all storagesets are normal (or normalizing if it’s a RAIDset
or mirrorset). Check again for misconfigured or missing devices.
9. Check the status of the units with the following command:
SHOW UNITS FULL
Ensure that all of the units are available or online. If the controller
reports that a unit is unavailable or offline, recheck the storageset it
belongs to with the following command:
SHOW storageset-name
If the controller reports that a unit has lost data or is unwriteable,
recheck the status of the devices that make up the storageset. If the
devices are OK, recheck the status of the cache module. If the unit
reports a media format error, recheck the status of the storageset and its
devices.