HP StorageWorks XP24000/XP20000 Disk Array Site Preparation Guide (AE002-96055, September 2010)

Figure 4 Expansion (dual) rack recommended floor cutouts option 1
.
DescriptionItem
9.00 in. (230 mm)A
2.25 in. (57mm)B
6.00 in. (150 mm)C
Allowable tolerance: +/ 0.125 in (+/ 3.2 mm)
Site requirements for the HP Disk Arrays30