Hot-Plug Scsi Hard Drives; Drive Replacement Precautions - Compaq 230039-001 - StorageWorks NAS Executor E7000 Model 904 Server Maintenance And Service Manual

Removal and Replacement Procedures
Figure 22: Removing a drive blank
Note:
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.
Note:
because the degraded drive is still online. The online spare activates only after a drive in the array
has failed.
48
1
Keep the blank for future use.
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.
An online spare drive does not activate and start rebuilding after a predictive failure alert
1
NAS e7000 v2 Maintenance and Service Guide
2