Replacing A Failed Cache Storage Device; Removing The Failed Cache Storage Device - 3Com SUPERSTACK 3 WEBCACHE 3000 User Manual

314 A F: R
PPENDIX EPLACING AND
Replacing a Failed
Cache Storage
Device
Removing the Failed
Cache Storage Device
I C
NSTALLING ACHE
If a cache storage device fails in the Webcache 3000, you can remove it
and return it to 3Com for replacement. A Yellow Cache Storage Status
LED on the front of the Webcache indicates that a cache storage device
has failed. Also the SNMP trap "Caching Disk Failed" is automatically
generated when a cache storage device fails. For further information
about SNMP traps, see
Only the Webcache 3000 has accessible cache storage devices; you
cannot remove them from the Webcache 1000. If a cache storage device
fails in the Webcache 1000, you should return the whole unit to 3Com.
The Webcache will continue to operate with reduced performance if at
least one cache storage device is functioning normally. If all cache storage
devices have failed, the Webcache automatically directs all requests to the
origin server.
To remove a cache storage device from the Webcache 3000:
1 Log in to the Web interface.
2 Click Device on the Toolbar.
3 Select System > Storage > Remove Disk in the Navigation Tree. The
Remove Cache Storage screen is displayed.
You can also open this screen by clicking the cache storage device that
you want to remove on the Device Mimic and selecting Remove Storage
from the pop-up menu. For further information, see
page 96.
4 Select the cache storage device that you want to remove from the Select
the Cache Storage Device list. Click Remove.
5 The Webcache automatically stops using the cache storage device that
you have selected and prepares it for removal. You can safely remove the
device from the Webcache when the Cache Storage Status LED on the
front panel changes to Yellow Flashing and then to Off. For further
information about LEDs, see
CAUTION: The Webcache service will be interrupted during the removal
of the cache storage device and client machines may experience network
problems.
S D
TORAGE EVICES
"SNMP Traps"
"LEDs" on
on page 212.
"Device Mimic"
page 61.
on