HP LeftHand P4000 SAN Solutions - Manual (Page 30)

Table 10 Description of items on the disk report (continued)
Description Column
•
Worn out—Red; drive is at 0% of remaining estimated life
•
Failed—Red; drive has failed and writes are not permitted
The data storage capacity of the disk. Capacity
SSD drives and wear life
The wear life statistics for SSD drives report drive usage so that drives can be replaced before they
wear out. Wear life statistics are displayed on the Disk Setup tab. Additional wear gauge
information is displayed in the Hardware Information report available from the Diagnostics category
for the storage system, shown in
Figure 12 (page 30) . For information about the Hardware
Information report, see “Generating a hardware information report” (page 98) .
Figure 12 SSD drive wear gauge statistics in Hardware Information
If all the SSD drives approach the end of their wear life at the same time, and you plan to replace
all the drives in the storage system, use one of the following methods to preserve the data while
replacing the drives:
•
Migrate the volumes and snapshots from the cluster containing the storage system with the
SSD drives to a different cluster in the management group. Remove the storage system from
the cluster and the management group, replace the drives and rebuild RAID on the drives.
Then return the storage system to the cluster and migrate the volumes and snapshots back to
the original cluster.
“Migrating or moving a volume ” (page 160) .
•
Perform a cluster swap, replacing the storage systems with the worn out SSD drives with
storage systems with new SSD drives. See
“Upgrading the storage systems in a cluster using
cluster swap” (page 136) .
NOTE: If replacing the SSD drives due to the wear life remaining status, the Repair Storage
System feature is not available because there is not a disk failure, indicated by a disk inactive or
disk off event in the Events list.
30 Configuring RAID and Managing Disks