Again, because of the rapid growth of commercial disk volumes and the ability to specify physical partition sizes within a volume group, the current limit of 128 disks per volume group is not a problem. Volume Group The following table reviews the limitations in the physical partitions per volume group. The following table reviews the limitations in the logical volumes per volume group. The following table reviews the limitations in the logical partitions per logical volume. At the present time, the capability to have more than three mirrors is not seen as a necessity.
Experience shows that customers tend to use only two of the three possible mirrored copies.