Use the following command to display information about spare disks that are available for relocation:
# vxdg [-g diskgroup] spare
The following is example output:
GROUP DISK DEVICE TAG OFFSET LENGTH FLAGS mydg mydg02 c0t2d0 c0t2d0 0 658007 s
Here mydg02 is the only disk designated as a spare in the mydg disk group. The LENGTH field indicates how much spare space is currently available on mydg02 for relocation.