HP 3PAR StoreServ 7450 Service Manual page 32

Use the following instructions for replacing failed disk drives or solid-state drives (SSD).
WARNING!
the self-encrypting drives (SED). Using a non-self-encrypting drive may cause errors during the
repair process.
CAUTION:
Disk drives are warm swappable even though they have yellow touch points. However, they
should only be removed on the advice of a qualified 3PAR administrator or HP service
technician after the fault LED is turned on, and after all the data has been vacated and
reconstructed to other drives.
If you require more than 10 minutes to replace a disk drive, install a disk drive blank cover
to prevent overheating while you are working.
To avoid damage to hardware and the loss of data, never remove a disk drive without
confirming that the disk fault LED is lit. Removal of a drive before verifying its status can at
best cause the 3PAR operating system to mark the drive as failed and prevent re-installation,
even though the drive is mechanically sound, and at worst cause data corruption or loss.
NOTE: SSDs have a limited number of writes that can occur before reaching the SSD's write
endurance limit. This limit is generally high enough so wear out will not occur during the expected
service life of an HP 3PAR StoreServ under the great majority of configurations, input/output
patterns, and workloads. HP 3PAR StoreServ tracks all writes to SSDs and can report the percent
of the total write endurance limit that has been used. This allows any SSD approaching the write
endurance limit to be proactively replaced before they are automatically spared out. An SSD has
reached the maximum usage limit once it exceeds its write endurance limit. Following the product
warranty period, SSDs that have exceeded the maximum usage limit will not be repaired or replaced
under HP support contracts.
32 Servicing the Storage System
If the StoreServ is enabled with the Data-at-Rest (DAR) encryption feature, only use