HP EVA P6550 HP P6300/P6500 EVA User Guide (5697-2486, September 2013) - Page 171

Is the fan LED amber? Answers No Yes Possible Reasons Actions Functioning properly. No action required Fan might not be inserted properly, • Be sure that the fan is undamaged might have a damaged connector, or and is fully seated. might have failed. • Contact an authorized service provider for assistance. 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. Effects of a disk drive failure 171