Remove Power From The 5U Enclosure; Figure 40 Route 5U Power Cords To Redundant Pdus - Seagate Exos X 4006 Series Hardware Installation And Maintenance Manual

IMPORTANT Only after you successfully complete the installation checklist can you complete system setup and begin
operation of the storage enclosure.
To apply power to the 5U enclosure:
1. If you removed power to repair the storage enclosure, begin by facing the rear of the rack cabinet and connect the plug for
each of the power to an independent power distribution unit (PDU). The second power supply unit (PSU) provides the first
PSU with redundant power.
IMPORTANT The storage enclosure design requires two redundant power supply units (PSUs). You must plug each
power cord into an independent power distribution unit (PDU) that connects to an uninterruptible power system.
2. Press the power switch to the ON position for each power supply unit (PSU).
3. Facing the front, observe the LEDs on the front panel area and confirm the Power On LED is in a steady green state. If it is
flashing amber, proceed to

Remove power from the 5U enclosure

The storage enclosure relies on main power provided through separate, independent power distribution. If you lose main
power for any reason, the storage enclosure automatically restarts after power restoration.
You must quiesce all data exchange before removing power to the storage enclosure.
To remove power from the 5U enclosure:
CAUTION Never remove power from a redundant power supply unit (PSU) when the other PSU has a fault condition,
indicated by an amber LED.
1. After you complete the proper shut down of the application and when you are ready to power down the storage enclosure,
press the power switch to the OFF position for each PSU.
2. Disconnect each power connector from its PSU socket or from the PDU.
3. You must wait a minimum of 15 seconds before power cycling the PSU and a minimum of 30 seconds after successful
completion of the power on sequence before you attempt to place the PSU in standby or remove power again.

Figure 40 Route 5U power cords to redundant PDUs

"Hardware installation and configuration issues" on page 74.
Chapter 7 Operation of 5U enclosures
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