HP 4000.6000.8000 Enterprise Virtual Arrays - Manual (Page 40)

Figure 6 Disk drive activity indicator
Creating disk groups
The new disks you add will typically be used to create new disk groups. Although you cannot select
which disks will be part of a disk group, you can control this by building the disk groups sequentially.
Add the disk drives required for the first disk group, and then create a disk group using these disk drives.
Now add the disk drives for the second disk group, and then create that disk group. This process gives
you control over which disk drives are included in each disk group. Figure 7 shows the sequential
building of vertical disk groups.
NOTE:
Standard and FATA disk drives must be in separate disk groups. Disk drives of different capacities and
spindle speeds can be included in the same disk group, but you may want to consider separating
them into separate disk groups.
40 Enterprise Virtual Array operation