If you use the vxdiskadm command to encapsulate a disk into a disk group with an alignment of 8K, the disk group alignment must be reduced to 1.
If you use the
vxencap command to perform the encapsulation, the alignment is carried out automatically without a confirmation prompt.
To change the alignment of a disk group during disk encapsulation
Add or initialize one or more disks" item from the main menu. As part of the encapsulation process, you are asked to confirm that a reduction of the disk group alignment from 8K to 1 is acceptable.