Turning On The Power After An Emergency Shutdown; Checking The Battery Service Date - IBM TotalStorage DS4400 User Manual

1. Turn off the power switches to allow the DS4400 Storage Server to cool.
2. When the room temperature is below the upper operating temperature of 35° C
3. Check the DS4400 Storage Server for faults or damage. Use the

Turning on the power after an emergency shutdown

Use this procedure to regain normal system operation after a power failure or
emergency shutdown.
1. Check all components and cables for damage. If there is no visible damage,
2. Make sure the power cords are plugged in.
3. Make sure that the circuit breaker, storage expansion enclosures, and storage
4. Turn on the circuit breakers in the rack cabinet, and turn on the power switches
5. Turn on both power switches on the back of the DS4400 Storage Server. For
6. Check the status of the DS4400 Storage Server and other devices. Make sure
7. When all the devices are powered up, check the overall system status using the

Checking the battery service date

Note: Replace the battery whenever it fails to hold a charge or every three years.
To check the battery service date, do the following:
1. Remove the DS4400 Storage Server bezel, as shown in Figure 21 on page 23.
2. Check the Battery Support Information label, as shown in Figure 32 on page 38.
(95° F), turn on the power switches.
storage-management software to check the overall status of the DS4400
Storage Server and its components. Correct any problems indicated.
continue with Step 2; otherwise, service the system.
server power switches are in the off position.
on all storage expansion enclosures attached to the DS4400 Storage Server.
Important: You must turn on the storage expansion enclosures before the
DS4400 Storage Server. The controllers might not recognize the correct
configuration if the attached drives are powered up after the DS4400 Storage
Server. For instructions on powering up the storage expansion enclosures, refer
to the storage expansion enclosure documentation.
the location of the power switches, see Figure 23 on page 25.
all fault indicator lights are off on the front and back of the DS4400 Storage
Server. For more information, see "Checking the indicator lights" on page 27.
storage-management software.
Operating the DS4400 Storage Server in a hot environment (above 35° C or
95° F) lowers the battery life expectancy.
Chapter 2. Operating the DS4400 Storage Server
37