000-221 · Question #172
The following verification routine is part of a script used to automate cloning rootvg. This routine determines which disks are available for use. Applying the logic, what configuration of disk…
The correct answer is D. A SAN disk virtualized as a Virtual SCSI disk, currently not part of a volume group. AIX rootvg cloning scripts select only disks that are free of existing volume group membership and accessible as standard block devices, excluding NPIV and already-claimed disks.
Question
The following verification routine is part of a script used to automate cloning rootvg. This routine determines which disks are available for use. Applying the logic, what configuration of disk would be selected by the script as a candidate?
Exhibit
Options
- AA SAN disk virtualized by NPIV.
- BA local physical SAS drive, currently a member of the vg00 volume group.
- CA physical SATA disk drive, currently containing the altinst_rootvg volume group.
- DA SAN disk virtualized as a Virtual SCSI disk, currently not part of a volume group
How the community answered
(31 responses)- A10% (3)
- B16% (5)
- C3% (1)
- D71% (22)
Why each option
AIX rootvg cloning scripts select only disks that are free of existing volume group membership and accessible as standard block devices, excluding NPIV and already-claimed disks.
NPIV-virtualized SAN disks are typically excluded by AIX cloning scripts because they require specific boot configuration support and the script logic filters them out as unsuitable primary targets.
This disk is already a member of vg00, meaning it has active LVM metadata, and the script rejects any disk that belongs to an existing volume group to prevent data loss.
This disk already contains the altinst_rootvg volume group, so it is not unallocated and would be excluded by the script's check for disks with no existing volume group assignment.
A Virtual SCSI disk not belonging to any volume group satisfies both conditions checked by rootvg cloning scripts: it is accessible as a standard block device and carries no existing LVM metadata that would conflict with the clone operation. Virtual SCSI disks in AIX LPARs are fully supported for alt_disk_copy operations, making this the valid candidate.
Concept tested: AIX rootvg clone candidate disk selection criteria
Source: https://www.ibm.com/docs/en/aix/7.3?topic=commands-alt-disk-copy-command
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