Power Requirements And Recommendations; Removing A Power Supply And Cooling Module - Dell EQUALLOGIC PS6500 Hardware Manual

PS6500 Hardware Maintenance
Caution: You should replace a faulty power supply and cooling module with a functioning module as soon as
possible because another module failure will cause the array to shut down.
Notes: Do not remove a failed power supply until you are ready to replace it. If the array loses power, it will not
power up unless all three power supplies are present.

Power Requirements and Recommendations

At a minimum, two functioning power supply and cooling modules, connected to one or more power sources, are
required for proper operation. Also, you cannot turn on full power to an array unless three modules are installed.
For a highly-available power configuration, Dell recommends that you:
• Connect the three power supply and cooling modules to different power sources on separate circuits. See
Figure 4-3.
• Connect two power supplies to an uninterruptible power supply (UPS) system and connect the other power
supply to a different power source.
Notes: If your array was shipped with power cables, use these cables to meet safety requirements. Otherwise,
contact your PS Series support provider or reseller for power cable information. See Appendix A for
information about voltage requirements.

Removing a Power Supply and Cooling Module

You can remove a failed power supply and cooling module without affecting array operation if two modules are
functioning and connected to power. Otherwise, if possible, cleanly shut down the array before removing the failed
module. See Shutting Down and Turning Off Power to an Array on page 1-13.
Figure 4-3: Recommended PS6500 Power Configuration
Maintaining Power Supply and Cooling Modules
4-3