108 QXS G2 Hardware Installation and Maintenance Guide
Powering On the 2U12 and/or 2U24 RAID Chassis
To power on the RAID chassis:
1 Locate the power supply units (PSU0 and PSU1) on the rear of the 2U12/2U24 RAID chassis.
Representative system shown in Figure 95.
Figure 95 2U12/2U24 Representative RAID Chassis (Rear View)
2 Plug the power cords into the power cord receptacles on the rear of the RAID chassis.
3 Plug the other end of the power cords into the rack power source.
4 Turn on (1) the PSU0 power switch and then turn on the PSU1 power switch.
RAID chassis powers on within 3 minutes.
• While the expansion chassis power up, their LEDs blink. After the LEDs stop blinking—if no
LEDs on the front and back of the chassis are amber—the power-on sequence is complete, and
no faults have been detected.
• The System Power LED on the 2U Ops panel should be lit green when the chassis power is
activated.
• See 2U Chassis Ops Panel LEDs on page 118 for details pertaining to 2U Ops panel LEDs and
related fault conditions.
Powering Off the 2U12 and/or 2U24 System
NOTE: Powering off the 2U12 and 2U24 system is the identical process.
1 Stop all I/O from hosts to the system (see Stopping I/O on page 181).
2 Shut down both controllers using either method described below:
• Use the Disk Management Utility to shut down both controllers, as described in the
QXS G2
Disk Management Utility User Guide
.
• Use the CLI to shut down both controllers, as described in the
QXS G2 CLI Reference Guide
.
3 On the RAID chassis complete the following:
a Turn off (0) the PSU0 power switch and then turn off the PSU1 power switch.
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1
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1
PSU0
2
PSU0 Power Switch
3
PSU0 Power Receptacle
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PSU1
5
PSU1 Power Receptacle
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PSU1 Power Switch
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