IBM Storwize V7000 Unified Quick Installation Manual page 50

Figure 13. Securing an enclosure to a rack cabinet
v Minimum depth of 718 mm (28.27 inch) and maximum depth of 762 mm (30
To install the support rails, do the following steps:
30
IBM Storwize V7000 Unified: Model 2073-720 Quick Installation Guide
inch) between the front and rear mounting flanges to support the use of the
cable management arm.
1. Locate the rack mounting rails and screws.
The rail assembly is made up of two sets of rails. One set of rails is already
installed, or preinstalled, on the sides of the enclosures. The other set of rails
must be installed in the rack cabinet. The rails on the sides of the enclosures
slide into the rails that are installed in the rack cabinet.
2. Working at the front of the rack cabinet, identify the two standard rack units
of space in the rack into which you want to install the support rails.
Figure 14 on page 31 shows two rack units with the front mounting holes
identified.