Modifies IR volume characteristics.

    Format

      SET UNIT  volume_id

1  –  Parameters

 volume_id

    Specifies the IR volume ID of the IR volume to be modified.

    (To display all IR volume IDs in the SAS Controller, enter the
    SAS command SHOW DISK or SHOW UNIT command.)

2  –  Qualifiers

2.1    /ACTIVE

    Activates the specified IR volume.

2.2    /CACHE

       /CACHE
       /NOCACHE (default)

    Specifies write caching to a physical disk. Write caching is
    turned off by default.

2.3    /DISABLE

    Temporarily disables all IR volumes on the SAS Controller.

2.4    /ENABLE

    Enables all IR volumes previously disabled by the /DISABLE
    qualifier.

2.5    /INACTIVE

    Deactivates the specified IR volume.

2.6    /LED

       /LED=OFF
       /LED=ON

    Sets the Locate LED for all physical disks on the IR volume to
    off or on.

2.7    /SPARE

       /SPARE=sas_id

    Specifies the disk SAS ID to be added as the Global Hot Spare
    disk. (The SAS ID is the ID displayed when you enter the SAS
    command SHOW DISK.)

    This qualifier is required only when specifying a Global Hot
    Spare disk for a RAID 1 configuration.

    You can configure one Global Hot Spare disk per controller. The
    spare drive can be shared between two RAID 1 IR volume sets per
    controller. The size of the disk specified as /SPARE should be
    equal to or greater than the size of at least one of the physical
    disks on the IR volume.

2.8    /SYNCH

       /SYNCH
       /NOSYNCH (default)

    Specifies the use of high-priority or low-priority
    resynchronization. High-priority resynchronization is off by
    default.