Inside the chassis – Dell PowerVault 735N (Rackmount NAS Appliance) User Manual
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Removing and Replacing Parts: Dell PowerVault 735N Systems Service Manual
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2 Tabs (2)
3 Status indicators (2)
4 Dell nameplate
NOTICE: When replacing the optional front bezel, ensure that the bezel is oriented so that its status indicators are positioned just
below the Dell nameplate in the center of the bezel.
Inside the Chassis
In Figure 3, the system doors are opened to provide an interior view. Figure 3 also identifies the drive bays. Refer to these illustrations to
locate interior features and components discussed later in this manual.
Figure 3. Inside the System (Right-Side View)
1 Cooling fans (3)
2 Expansion-card cage
3 Microprocessors
4 System board
5 Redundant power supply (2)
6 Power supply distribution board
7 Interposer board
8 Diskette drive/CD-ROM drive unit
9 Hard disk drive bays (5)
The system board holds the system's control circuitry, microprocessors, and other electronic components. Several hardware options such as
the microprocessors and memory are installed directly on the system board. The expansion-card cage accommodates up to three full-length
PCI expansion cards. Slot 1 has a PowerEdge Redundant Array of Independent Disks (RAID) controller 2/Dual Channel (PERC 2/DC) card.
The two peripheral bays provide space for a 3.5 inch diskette drive, CD-ROM drive, and a fifth small computer serial interface (SCSI) hard
drive.
The hard-disk drive bays provide space for up to five 1-inch SCSI hard-disk drives. These hard-disk drives are connected to the PERC 2/DC
host adapter via the SCSI backplane board.
The power cables leading from the power supply distribution board (PSDB) and interposer board provide power to the system board, SCSI
backplane board, and drives in the peripheral bays.
For non-SCSI drives such as the diskette drive and the CD-ROM drive, an interface cable connects each drive to the interposer board or to an
expansion card.
During a service procedure, you may be required to change a jumper or switch setting. For information on the system board jumpers, see
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