Turning off the storage subsystem
The DS3500 is designed to run continuously. After you turn it on, 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
power.
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
unexpected shutdown” on page 83.
Attention: Except in an emergency, never turn off the power if any amber (needs
attention) LEDs are lit. Correct the fault before you turn off the power. Use the DS
Storage Manager software and the amber LEDs to check the overall status of the
DS3500. All LEDs should be green on the front of the storage subsystem. If they
are not, use the DS Storage Manager software to diagnose the problem so that the
DS3500 will power-on correctly later.
(L003)
1
2
or
!
1
2
Attention: Turning off and turning on power without waiting for the storage
subsystem disk drives to spin down can damage the drives and might cause data
loss. Always wait at least 70 seconds after you turn off the power before you turn
on the power again.
Chapter 4. Operating the storage subsystem and expansion enclosure 81
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