Turning The Power Off - Silicon Graphics InfiniteStorage S330 RAID User Manual

3: Operating Storage Enclosures

Turning the Power Off

34
The enclosure is designed to run continuously, 24 hours a day. However, you may need to turn the
power off for maintenance, such as upgrading the drives or replacing certain modules.To turn the
power off, follow these steps:
1. Use TPSSM to determine the status of your system components and any special instructions
before proceeding. The operating system software may require you to perform other
procedures before turning off the power.
2. Stop all I/O activity to the enclosure.
If applicable, use TPSSM to logically disconnect the enclosure from the host. Make sure that
all the drive activity indicators on the front of the enclosure are not blinking (indicating I/O
activity) and that the fast write cache indicator light on the applicable RAID controller is off
(not blinking).
3. Make sure that all the enclosure fault indicators are off (see Figure 3-2 on page 36 and
Figure 3-3 on page 39).
If a fault indicator is on, correct the problem before turning off the power. Use TPSSM to
diagnose and fix the problem.
Warning:
To shut off all power to an enclosure, you must turn off both power
switches and disconnect both power cords. An enclosure has two power switches and
two power cords. The enclosure continues to operate if both switches are not turned off
and both cords are not disconnected.
4. Turn off both power switches on the rear of the enclosure or the main circuit breaker,
whichever is applicable (see Figure 3-1 on page 30).
Important: Once the power is off, you must wait at least 30 seconds before you turn it back
on again.
5. After you have performed the necessary maintenance procedure, power on the enclosure
using the procedure in "Turning the Power On" on page 29.
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