Installing Drives; Interface Cables; Dc Power Cables - Dell PowerEdge 850 Installation And Troubleshooting Manual

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Installing Drives
Dell™ PowerEdge™ 800 Systems Installation and Troubleshooting Guide
Connecting Drives
Front-Panel Drive Inserts
Diskette Drive
5.25-Inch Drives
Hard Drives
Cabled SATA and SCSI Hard Drives
Front-Access SCSI Hard Drives (Non-Hot-Plug)
Hot-Plug SCSI Hard Drives
Installing the Optional SCSI Backplane Board
Installing a RAID Controller Card
Your system supports the following drives:
Up to two externally accessible 5.25-inch drives (typically optical and tape backup drives). An optical drive is standard in the first external drive bay, and
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a tape backup device can be installed in the second external drive bay.
An externally accessible 3.5-inch diskette drive.
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Up to four 1-inch SATA or SCSI hard drives. Four hard drive configurations are available:
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Cabled SATA drives. See
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Cabled SCSI drives (requires optional SCSI controller card). See
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Front-access (non-hot-plug) SCSI drives (requires optional SCSI backplane and optional SCSI controller card). See
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(Non-Hot-Plug)" and "Installing the Optional SCSI Backplane
Hot-plug SCSI drives (requires optional SCSI backplane and optional SCSI RAID controller). See
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Controller Card," and
Connecting Drives

Interface Cables

Most interface connectors are keyed for correct insertion. Keying ensures that the pin-1 wire in the cable connects to pin 1 in the connectors on both ends.
When you disconnect an interface cable, take care to grasp the cable connector, rather than the cable itself, to avoid stress on the cable.
Drive Cable Configurations
Your system can accommodate many different drive configurations, each with specific cable requirements.
drive configurations.
NOTE: Installing SATA and SCSI hard drives in the same system is not supported.
Table 7-1. Drive Cable Configuration
Drives
IDE optical drives, and IDE and SCSI tape drives (See
Figure 7-4.)
Up to four cabled SATA hard drives (See Figure 7-7.)
Up to four cabled (non-hot-plug) SCSI hard-drives (See
Figure 7-9.)
Up to four front-access or hot-plug SCSI hard drives
connected to the SCSI backplane (See Figure 7-12.)

DC Power Cables

Each drive must connect to a DC power cable from the system power supply. These power cables are used for the 3.5-inch diskette drive, 5.25-inch devices,
and hard drives.
NOTICE: To avoid electrical damage to internal system components, install a cover connector on any unused connectors on hard-drive power cables.
"Cabled SATA and SCSI Hard Drives."
"Installing the Optional SCSI Backplane
Required Cable
40-pin IDE 2-drop cable or SCSI 1-
drop cable (terminated)
7-pin SATA hard-drive cable (one
cable per drive)
94-cm (37-inch) SCSI 4-drop cable
(terminated)
38-cm (15-inch) 68-pin SCSI 1-drop
cable (unterminated)
"Cabled SATA and SCSI Hard Drives."
Board."
Board."-+
Table 7-1
Cable Connections
IDE drive and primary IDE connector on system board or
the SCSI tape device and the SCSI controller card
SATA hard drives and SATA port connectors on the system
board, or on a RAID controller card.
SCSI hard drives and SCSI RAID controller or SCSI controller
card
SCSI backplane and the SCSI controller card
"Front-Access SCSI Hard Drives
"Hot-Plug SCSI Hard Drives," "Installing a RAID
shows the cable requirements for common