Dell FC4500 Reference Guide - Page 25

Drive Carrier, Power Supplies, switch. Each supply supports a fully con d DPE and shares load

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Drive Carrier Power Supplies About the Rackmount Disk-Array Processor Enclosure 1 within the same DPE, subject to the restrictions imposed by the Core Software running in the DPE's SPs. The disk-drive carrier is a plastic assembly that slides into the enclosure slot guides and midplane connectors. It has a handle with a latch and electrostatic discharge (ESD) clips, which connect to the drive's head-disk assembly. The latch holds the disk module in place to ensure proper connection with the midplane. The power supplies (see figure below) are located behind the drive fan pack. With two power supplies, the top supply is installed inverted with respect to the bottom supply. On/Off switch and circuit breaker Ac line cord connector Latch Active light (green) ! Check light (amber) Cooling Check light (amber) Figure 1-10 Power Supply Each power supply is an auto-ranging, power-factor-corrected, multi-output, off-line converter with its own line cord and on/off switch. Each supply supports a fully configured DPE and shares load currents with the other supply, if it is present. The drive and LCC voltage lines have individual soft-start switches that protect the disk drives and LCCs if you install them while the DPE is powered up. A CRU with power-related faults will not adversely affect the operation of any other CRU. Link Control Cards (LCCs) 1-13

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1
Link Control Cards (LCCs)
1-13
About the Rackmount Disk-Array Processor Enclosure
within the same DPE, subject to the restrictions imposed by the Core
Software running in the DPE
’
s SPs.
Drive Carrier
The disk-drive carrier is a plastic assembly that slides into the
enclosure slot guides and midplane connectors. It has a handle with a
latch and electrostatic discharge (ESD) clips, which connect to the
drive
’
s head-disk assembly. The latch holds the disk module in place
to ensure proper connection with the midplane.
Power Supplies
The power supplies (see figure below) are located behind the drive
fan pack. With two power supplies, the top supply is installed
inverted with respect to the bottom supply.
Figure 1-10
Power Supply
Each power supply is an auto-ranging, power-factor-corrected,
multi-output, off-line converter with its own line cord and on/off
switch. Each supply supports a fully configured DPE and shares load
currents with the other supply, if it is present. The drive and LCC
voltage lines have individual soft-start switches that protect the disk
drives and LCCs if you install them while the DPE is powered up. A
CRU with power-related faults will not adversely affect the operation
of any other CRU.
On/Off switch and
circuit breaker
Latch
Active light
(green)
Ac line cord
connector
Check light
(amber)
!
Cooling Check
light (amber)