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IBM TotalStorage DS300 and DS400 Best Practices Guide
Rear view
The following sections detail the LEDs, controls and connectors for the power
supply and controller at the rear of the storage subsystem.
Power supply
Figure 3-7 shows the LEDs, controls and connectors on the power supply.
Figure 3-7 DS300 power supply LEDs, controls and connectors
AC power connector - Connect the power cord to this connector.
AC power on/off switch - Use this switch to turn the power supply on and off.
Power OK LED (green) - When this LED is lit, it indicates that the power
supply is turned on.
Fault LED (amber) - When this LED is lit, there is a fault with either the power
supply or a fan.
Amber Hard Disk Drive Status LED is lit solidly.
Each hard disk drive has a status LED. When this
LED is lit solidly, it indicates that the drive has failed.
Note: When this LED is flashing slowly (one flash
per second), it indicates that the drive is being
rebuilt. When the LED is flashing rapidly (three
flashes per second), it indicates that the RAID
controller is identifying the drive.
For a single drive failure, replace the failed drive.
For a multiple drive failure, attempt to determine the
order in which the drives failed and then follow the
appropriate recovery process for their RAID level.
DS300 problem indicators
Action
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