Hi Team,
This is a basic question i am asking is,
During the creation of concatanation and mirrored volumes, how many numbers of subdisks are created.. in which factors it depends.
Please assist, as i have to give training to collougues in my office.
Thanks,
Allabout unix
Generally one subdisk is created per disk. The volume may span more than one disk if the disk is not large enough and for a mirror you will need twice as many disks.
If the available space on a disk in not contiguos, so for instance you have an existing subdisk from another volume in the middle of the disk (this would only happen if you had previoulsy deleted a volume that had a subdisk at the start of a disk), then creation of a new volume may create 2 subdisks, one at the start of the disk and one at the end.
Mike
The volume layout that you specify/select will also determine the amount of resulting subdisks (e.g. striping combined with mirroring).
Best is to have a lab environment (especially when you have to train co-workers).
Create volumes with different layout types, then use 'vxprint -htr' to view actual disk layout.
Viewing layout of volumes with vxprint and/or GUI makes the concept of plexes and subdisks easy to understand.
