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v A power outage or emergency situation occurs, see "Restoring power after an
Turning off the EXP810
Use the following procedure to turn off the power for the EXP810.
Attention:
Attention LEDs are on. Correct the fault before you turn off the power. Use the DS
Storage Manager client and the Needs Attention LEDs to check the overall status of
the EXP810. All LEDs should be green on the front of the storage expansion
enclosure. If they are not, use the DS Storage Manager client to diagnose the
problem. This ensures that the EXP810 will power up correctly later.
The EXP810 is designed to run continuously. After you turn on the EXP810, do not
turn it off. Turn off the power only in the following situations:
v Instructions in a hardware or software procedure require that you turn off the
v An IBM technical support representative instructs you to turn off the power.
v A power outage or emergency situation occurs, see "Restoring power after an
Statement 5:
CAUTION:
The power control button on the device and the power switch on the power
supply do not turn off the electrical current supplied to the device. The device
also might have more than one power cord. To remove all electrical current
from the device, ensure that all power cords are disconnected from the power
source.
CAUTION:
This unit has more than one power source. To remove all power from the unit,
all dc MAINS must be disconnected.
Attention:
expansion enclosure disk drives to spin down can damage the drives and might
cause data loss. Always let at least 70 seconds elapse from when you turn off the
power until you turn on the power again.
80
IBM System Storage DS4000 EXP810 Storage Expansion Enclosure: Installation, User's and Maintenance Guide
unexpected shutdown" on page 83.
Except in an emergency, never turn off the power if any Needs
power.
unexpected shutdown" on page 83.
Turning off and turning on power without waiting for the storage
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