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Securing the power cables
The DC power cable must be contained in a single rack and must not extend outside the rack to another
rack. The DC power cable is 4 m long. Connect it to the DC power source before you connect it to the PSU.
The PSU does not have a power switch. When power is connected, the outlets and the enclosure become
live. Review the information on securing the power cables to ensure that the cables are securely attached
to the enclosure.
Direct current power replaceable units
The DC power supply model has two replaceable units.
Table 22. Direct current power replaceable units
Description
Direct current power supply
Direct current power cable
The procedure to remove and replace the DC power supply unit is the same as the AC power supply
procedure.
When replacing the DC power cable, follow the instructions for disconnecting cables from the DC power
distribution unit.
Verify environmental requirements
The environmental and electrical requirements for the physical site must be met to ensure that your
system works reliably.
Before installing a system, you must verify that adequate space in a suitable rack is available. You must
also ensure that the requirements for power and environmental conditions are met.
This guide assumes that you have completed the physical planning for the environment of your system. If
you have not done the environmental planning for your system, see the "Physical installation planning"
topic in the IBM Knowledge Center for Storwize V5000E .
Review enclosure location guidelines
Before you install the enclosures, you must be familiar with these enclosure location guidelines.
Installing a control enclosure only
If you are installing a control enclosure only, follow these guidelines.
• Position the enclosure in the rack so that you can easily view it and access it for servicing.
• Locate the enclosure low enough for the rack to remain stable.
• Ensure that you provide a way for two or more people to install and remove the enclosure.
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.
• Each system enclosure to be installed requires 2U of rack space.
• Each assembled enclosure weighs more than 18 kg. Provide sufficient space at the front of the rack for
two persons to carry the enclosure safely.
• Install all enclosures that constitute one system in contiguous positions in a rack. Place the control
enclosure in the middle of the rack.
20 IBM Storwize V5000E : Storwize V5000E Quick Installation Guide
FRU part number
01AC311
00AR087
Customer replaced
Y
Y
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