Is The Fan Led Amber; Effects Of A Disk Drive Failure; Compromised Fault Tolerance; Factors To Consider Before Replacing Disk Drives - HP EVA P6000 User Manual

Is the fan LED amber?

Answers
No
Yes

Effects of a disk drive failure

When a disk drive fails, all virtual disks that are in the same array are affected. Each virtual disk
in an array might be using a different fault-tolerance method, so each can be affected differently.
RAID0 configurations cannot tolerate drive failure. If any physical drive in the array fails, all
non-fault-tolerant (RAID0) logical drives in the same disk group also fail.
RAID1+0 configurations can tolerate multiple drive failures as long as no failed drives are
mirrored to one another (with no spares assigned).
RAID5 configurations can tolerate one drive failure (with no spares assigned).
RAID6 configurations can tolerate simultaneous failure of two drives (with no spares assigned).

Compromised fault tolerance

If more disk drives fail than the fault-tolerance method allows, fault tolerance is compromised, and
the virtual disk fails.

Factors to consider before replacing disk drives

Before replacing a degraded drive:
Be sure that the array has a current, valid backup.
Use replacement drives that have a capacity at least as great as that of the smallest drive in
the array. The controller immediately fails drives that have insufficient capacity.
To minimize the likelihood of fatal system errors, take these precautions when removing failed
drives:
Do not remove a degraded drive if any other drive in the array is offline (the online LED is
off). In this situation, no other drive in the array can be removed without data loss.
Exceptions:
When RAID1+0 is used, drives are mirrored in pairs. Several drives can be in a failed
◦
condition simultaneously (and they can all be replaced simultaneously) without data loss,
as long as no two failed drives belong to the same mirrored pair.
◦ When RAID6 is used, two drives can fail simultaneously (and be replaced simultaneously)
without data loss.
◦ If the offline drive is a spare, the degraded drive can be replaced.
Do not remove a second drive from an array until the first failed or missing drive has been
replaced and the rebuild process is complete. (The rebuild is complete when the Online LED
on the front of the drive stops blinking.)
Exceptions:
◦ In RAID6 configurations, any two drives in the array can be replaced simultaneously.
◦ In RAID1+0 configurations, any drives that are not mirrored to other removed or failed
drives can be simultaneously replaced offline without data loss.
154 Troubleshooting
Possible Reasons
Functioning properly.
Fan might not be inserted properly,
might have a damaged connector, or
might have failed.
Actions
No action required
Be sure that the fan is undamaged
and is fully seated.
Contact an authorized service
provider for assistance.