HP BladeSystem c7000 Setup And Installation Manual page 27

Push the handles down on each side of the enclosure, and slide the enclosure fully into the rack.
2.
Tighten the thumbscrews to secure the enclosure to the rack.
3.
Install the rear cage into the enclosure.
4.
Repeat the procedure for the remaining enclosures.
5.
NOTE: Up to four 10U enclosures can be installed in a 42U rack. If you are installing more than
one enclosure, install the first enclosure in the bottom of the rack, and then install additional
enclosures by moving up the rack with each subsequent enclosure. Plan rack installation carefully
because it is difficult to change the location of components after they are installed.
("Installing the rear cage into the enclosure" on page 28)
Installation 27