Method used to set hot-spare disks

Prerequisite: The system has free disks.

You need to create hot spare disks to ensure the reliability of the storage device. For controller enclosures with integrated disks and controllers, the number of hot spare disks must not be smaller than the total number of controller enclosures and disk enclosures. For controller enclosures with separated disks and controllers, the number of hot spare disks in the storage system must not be smaller than the number of disk enclosures. The type and capacity of a hot spare disk must be the same as those of RAID group member disks.
If the storage system has additional free disks, you can set more hot spare disks for even higher system reliability.

Currently, storage systems support global hot spare disks only, and you cannot assign a hot spare disk to a specific RAID group.
Coffer disks cannot be used as hot spare disks.
Only free disks can be set as hot spare disks.
The procedures are as follows:
In the ISM navigation tree, choose All Devices > SN_XX > Device Info > Storage Unit > Disks. (SN_XX is the name of the target storage device.)
In the function pane of ISM, select disks that you want to set to hot spare disks.
On the upper function pane of ISM, choose Hot Spare Disk > Set.

The system displays the result of setting hot spare disks.
Upon successful creation of hot pare disks, Logical Type of each selected hard disk changes to Hot Spare Disk.
If the operation fails, select another available disk as the hot spare disk based on the error message.

The results are as follows:

After a hot spare disk is created, on the right function pane, the Running Status of the disk is Free Hot Spare Disk. When faulty member disks result in a RAID group failure, the created hot spare disk can take over the data stored on the faulty member disks to ensure normal operation of the RAID group. In this case, Running Status of the hot spare disk changes to Used Hot Spare Disk.