61
Adding Internal Peripheral Devices
A CD-ROM drive, a floppy disk drive, and the primary system disk drive are installed in bays at
the front of the base unit chassis. You can add internal peripheral devices to open peripheral
device bays as follows:
♦
Front-access bays—EIDE and SCSI non-disk devices
♦
Internal-access bays—SCSI disk drives
A total of four front-access device bays are available in the front-access device cage. The
CD-ROM drive and the floppy disk drive occupy two of these bays. A total of three internal-
access device bays are available in the internal-access device cage; the primary system disk drives
occupies one of these bays.
EIDE peripheral devices connect to the primary and secondary EIDE channels on the system
board. The CD-ROM drive is connected to primary EIDE channel and is configured as the master
device on that channel; the cable for the CD-ROM drive can also connect to a device in one of the
front-access device bays. A second cable delivered with the workstation is available to connect
two front-access EIDE devices to the secondary EIDE channel.
SCSI peripheral devices are controlled by a Symbios single-channel low-voltage differential
signaling (LVDS) Wide Ultra2 SCSI controller card. SCSI disk drives in the internal-access bays
connect to the card’s internal connector. An additional controller is required for SCSI devices
installed in the front-access bays.
The following table describes the peripheral device bays:
Location
Access
Device
Device Size
Bus
Bay 1 (top)
External
CD-ROM drive
5.25-inch x 1.6-inch
EIDE
Bay 2
External
Non-disk device
5.25-inch x 1.6-inch
EIDE/SCSI
Bay 3
External
Non-disk device
5.25-inch x 1.6-inch
EIDE/SCSI
Bay 4
External
Floppy disk drive
3.5-inch x 1.0-inch
N/A
Bay 5 *
Internal
Disk drive
3.5-inch x 1.0-inch *
SCSI
Bay 6 *
Internal
Disk drive
3.5-inch x 1.0-inch *
SCSI
Bay 7 (bottom) *
Internal
System disk drive
3.5-inch x 1.0-inch *
SCSI
* Two 3.5-inch x 1.6-inch devices can be installed in bays 5, 6, and 7
See the following figure to locate the peripheral device bays.
