IBM Storwize V7000 Gen2+ Quick Installation Manual page 34

Installing a control enclosure and one or more expansion
enclosures
If you are installing a control enclosure plus one or more expansion enclosures,
follow these guidelines.
v A system can support up to 1056 drives that are installed into control and
v Each assembled enclosure weighs more than 36 kg. Provide sufficient space at
v Each system can consist of up to four control enclosures. Each control enclosure
v For best performance, divide the total number of expansion enclosures to be
v Where expansion enclosures are to be installed, distribute them evenly into rack
v Leave space in the rack for future expansion enclosures, but otherwise install all
v If a rack is to be only partially filled, install the enclosures low enough for the
Adding an expansion enclosure chain to an existing system
If you are adding an expansion enclosure chain to an existing system, follow these
guidelines.
v You do not need to power off the system. You can add an expansion enclosure
v Add the first expansion enclosure directly below the control enclosure.
v Add the second expansion enclosure directly above the control enclosure.
v Add the third expansion enclosure directly below the first.
v Add the fourth expansion directly above the second, and so on.
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Storwize V7000 Gen2 and Gen2+: Quick Installation Guide
expansion enclosures. Each enclosure requires 2U of rack space.
the front of the rack for three persons to carry the enclosure safely.
can be connected to up to 20 expansion enclosures (two SAS chains of up to 10
expansion enclosures each).
installed among the control enclosures in the system.
space above and below the control enclosure to which they are to connect. Do
not leave gaps between the enclosures. Such placement aids cabling and
serviceability.
enclosures that constitute one system in adjacent or nearby rack space.
rack to remain stable and enable easy access to the enclosures for servicing.
while the system is operational.