Direct current power replaceable units
The DC power supply model has two replaceable units.
Table 22. Direct current power replaceable units
Description FRU part number Customer replaced
Direct current power supply 01AC311 Y
Direct current power cable 00AR087 Y
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 FlashSystem 5000 .
Review enclosure location guidelines
Before you install the enclosures, you must be familiar with these enclosure location 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.
Chapter 3. Before you begin the installation
19
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