b. Complete the recovery procedure.
If the Recovery Guru directs you to replace a failed component, use the
individual LEDs to locate the failed component.
c. When the recovery procedure is completed, select
Recheck
in the
Recovery Guru. This action reruns the Recovery Guru to ensure that the
problem has been fixed.
d. If the problem has not been fixed, contact your IBM service representative.
Do not turn off power until all problems are corrected.
6. Check the Cache Active LED, and verify that it is off.
If the Cache Active LED is on steady, the cache contains data. Wait for the
data to clear from cache memory before turning off the power.
7. Check the LEDs on the storage expansion enclosures to verify that all Drive
Active LEDs are on steady (not blinking).
If one or more LEDs are blinking, data is being written to or from the drives.
Wait for all active LEDs to stop blinking.
8. Turn off the power switch on the back of each controller in the storage
subsystem.
Note:
Until the power switch on each controller is turned off, power still
remains turned on for the both controllers; therefore, the seven-segment
display on each controller stays on until the power switch on each
controller is turned off.
9. Turn off both power switches on the back of each storage expansion enclosure
in the configuration.
CAUTION:
The
power
control
button
on
the
device
and
the
power
switch
power
supply
do
not
turn
off
the
electrical
current
supplied
to
the
device.
The
device
might
also
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.
10. (Models with dc power supplies and fan units only) Flip all of the disconnect
devices to the OFF position.
11. Remove (unplug) all of the power cords from the EXP810 power supply
connectors.
12. After you perform the necessary maintenance procedures, turn on the power
using the procedure in “Turning on the EXP810 ” on page 69.
Performing
an
emergency
shutdown
Attention:
Emergency situations might include fire, flood, extreme weather
conditions, or other hazardous circumstances. If a power outage or emergency
situation occurs, always turn off all power switches on all computing equipment.
This helps to safeguard your equipment from potential damage due to electrical
surges when power is restored. If the EXP810 loses power unexpectedly, it might
be due to a hardware failure in the power system or in the midplane of the EXP810.
Complete the following steps to shut down the system during an emergency:
1. If you have time, stop all I/O activity to the storage expansion enclosure.
2. Check the LEDs. Make note of any Needs Attention LEDs that are on so you
can correct the problem when you turn on the power again.
82
IBM System Storage DS4000 EXP810 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide
Summary of Contents for DS4000 EXP810
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