13 Hard Disk Replacement; Raid 6; How Do I Know A Disk Has Failed; Drive Leds - HP StorageWorks D2D - Backup Systems User Manual

13 Hard disk replacement

In this chapter:
• "RAID 6" on page 185
• "How do I know a disk has
• "Replacing a hot-plug hard
• "After replacing the failed

RAID 6

The HP D2D is a RAID 6 device. RAID 6 provides protection against double disk failures and failures
while a single disk is rebuilding.
The HP D2D also has an online spare disk, which will automatically be incorporated into the RAID if
a disk fails. This means that actual storage capacity is approximately 9 TB for the 12–disk model and
18 TB with the Capacity Upgrade Kit.

How do I know a disk has failed?

The Disk online LED (1) on the failed disk shows amber.
Figure 59 Drive LEDs
NOTE:
For more information about these LEDs refer to
failed?" on page 185
disk" on page 188
disk" on page 190
"Drive LEDs" on page 71.
D2D Backup System HP D2D4112 185