Software User Manual

• Re-seat physical drives and controllers.
• Check drive cables and connectors for any signs of damage or bent pins.
IMPORTANT: To minimize downtime, HP recommends that steps involving the reseating of drives
and controllers be performed simultaneously. Perform steps involving multiple drive reseating,
controller reseating, and cable inspection with the server powered off.
TIP: When powering down a system using external storage, power down the server before
powering down the external storage. When powering up the system, power on the external storage
before powering on the server. This action prevents the possibility of drives being failed erroneously
by the controller.
A server power failure before the test, can also cause erroneous failures.
For more troubleshooting procedures, see the HP ProLiant Servers Troubleshooting Guide located
on the HP website at http://www.hp.com.
To troubleshoot the backplane, controller, and cables, do the following:
• Check drive cables for any signs of damage or bent pins. Try another drive cable from another
server, if possible.
• If you are able to identify a bad bay, replace the hard drive backplane.
If the backplane and drive cables have already been replaced, the problem may be a bad
controller.
• Determine if the controller is good by moving it to another server. Boot the server, and watch
for any POST errors. If the controller has already been replaced, the problem is likely to be
a bad backplane or cable.
Troubleshooting disk drives and storage systems 35