IBM Storwize V7000 Quick Installation Manual page 20

v Position the enclosures in the rack so that you can easily view them and access
If you are installing an expansion enclosure to an existing system, follow these
guidelines:
When you add the first expansion enclosure to a control enclosure, it is preferable
to add the enclosure directly below the control enclosure. When you add a second
expansion enclosure, it is preferable to add the enclosure directly above the control
enclosure. For each expansion enclosure that you add, alternately add it below or
above the control enclosure. Refer to Figure 10 on page 11.
If you are adding an expansion enclosure to an existing system, you do not need to
power off the system. You can add an expansion enclosure while the system is
operational.
10
Storwize V7000 Unified: Quick Installation Guide
them for servicing. This action helps the rack to remain stable and provides a
way for two or more people to install and remove the enclosures.