IBM 3000 6.0.2, Service Manual

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If one or more pdisks in the recovery group is marked for replacement, the following command reports
it with a yes in the “needs service” column:
mmvdisk recoverygroup list
In the following example, the BB01L recovery group needs service:
# mmvdisk recoverygroup list
needs user
recovery group active current or master server service vdisks remarks
-------------- ------- -------------------------------- ------- ------ -------
BB01L yes server01.gpfs.net yes 3
BB01R yes server02.gpfs.net no 3
This happens when the number of failed pdisks in one of the recovery group's declustered arrays
reaches or exceeds the replacement threshold for the declustered array.
Pdisks that have reached the threshold for replacement are listed with the following command:
mmvdisk pdisk list --replace
# mmvdisk pdisk list --recovery-group all --replace
recovery group pdisk priority FRU (type) location
-------------- ------------ -------- --------------- --------
BB01L e2s11 1.15 00W1240 Enclosure 2 Drive 11
BB01L e3s01 1.15 00W1240 Enclosure 3 Drive 1
mmvdisk: A lower priority value means a higher need for replacement.
Preparing disks for replacement
1. Prepare each of the pdisk name entries for replacement with the following command:
mmvdisk pdisk replace –-prepare –-recovery-group <rg name> --pdisk <pdisk name>
To prepare pdisk e2s11 of recovery group BB01L for replacement, run the following command:
# mmvdisk pdisk replace --prepare --recovery-group BB01L --pdisk e2s11
mmvdisk: Suspending pdisk e2s11 of RG BB01L in location SX32901810-11.
mmvdisk: Location SX32901810-11 is Enclosure 2 Drive 11.
mmvdisk: Carrier released.
mmvdisk:
mmvdisk: - Remove carrier.
mmvdisk: - Replace disk in location SX32901810-11 with type '00W1240'.
mmvdisk: - Reinsert carrier.
mmvdisk: - Issue the following command:
mmvdisk:
mmvdisk: mmvdisk pdisk replace --recovery-group BB01L --pdisk 'e2s11'
The drive associated with the pdisk name in the previous command should now have flashing amber
fault LED to indicate it is safe to remove this drive.
Removing the disk physically
1. Press the blue touchpoint to unlock the latching handle, as shown in this figure.
20 IBM Elastic Storage System 3000: Service Guide