IBM TotalStorage FAStT700, User Manual

Page: 38 / 100

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.
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2
Use the following procedure to turn off power to the FAStT700 Storage Server.
1. Make sure that all amber fault indicator lights on the FAStT700 Storage Server
are off. If any fault indicator lights are on, use the storage-management software
to determine the status of the system components and correct any problems
before turning off the power. For more information, see “Monitoring status
through software” on page 21 and “Checking the indicator lights” on page 21.
2. Perform any required procedures that are indicated by the operating-system
software.
3. Prepare the FAStT700 Storage Server for shutdown, as follows:
a. Stop all I/O activity to the FAStT700 Storage Server and attached drive
enclosures.
Note: If a parity check is in progress, it might take a long time for the drive
indicator lights to stop blinking.
b. Use the operating-system software to disconnect the FAStT700 Storage
Server logical drives from the host before the storage server is powered off.
c. Make sure that the fast write cache indicator light on each FAStT700
Storage Server front panel and all drive active indicator lights on each drive
enclosure front panel are off (not blinking).
Attention: To turn off all power to the storage server, you must turn off both
power-supply switches and disconnect both power cords. Use the procedure in
step 4 for the proper shutdown sequence.
4. Turn off the power to the FAStT700 Storage Server or turn off the power to
each device using the following shutdown sequence.
a. Turn off power to the host before the storage server. If the host must stay
powered on to support an existing network, refer to the operating system
documentation for information about disconnecting the storage server logical
drives from the host before the storage server is powered off.
b. Turn off power to the storage server before you turn off power to the drive
enclosures. Turn off both power supply switches on the back of the storage
server. See Figure 22 on page 19.
c. Turn off power to other supporting devices (for example, management
stations, Fibre Channel switches, or Ethernet switches).
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FAStT700 Fibre Channel Storage Server: User’s Guide