hp StorageWorks NAS e7000 v2 Maintenance and Service Guide

Removal and Replacement Procedures

48 NAS e7000 v2 Maintenance and Service Guide

Figure 22: Removing a drive blank

Note: Keep the blank for future use.

Reverse steps 1 and 2 to replace a drive blank.

Hot-Plug SCSI Hard Drives

Drive Replacement Precautions

Be aware of the following guidelines cautioning unsafe hot-plug replacement.

■ Do not remove a degraded drive if any other member of the array is offline (the online

LED is off). No other drive in the array is hot-pluggable without data loss. The exception

to this is the use of RAID 1+0 as a fault-tolerant configuration. In this case, drives are

mirrored in pairs. More than one drive can fail and be replaced as long as the drive or

drives they are mirroring are online.

■ Do not remove a degraded drive if any member of an array is missing (previously and not

yet replaced).

■ Do not remove a degraded drive if any member of an array is being rebuilt, unless the drive

being rebuilt has been configured as an online spare. The online LED for the drive flashes

green or amber, indicating that a replaced drive is being rebuilt from the data stored on the

other drives.

Note: An online spare drive does not activate and start rebuilding after a predictive failure alert

because the degraded drive is still online. The online spare activates only after a drive in the array

has failed.