Acer G901 manual Inch peripheral drives, Preliminary considerations, Drive cables

94 3 Hardware configuration

5.25-inch peripheral drives

This section provides information and instructions for installing and removing devices from the 5.25-inch peripheral bay.

Preliminary considerations

Caution! You should not install hard drives in the 5.25-inch peripheral drive bays for two reasons:

-The drives cannot be properly cooled in this location.

-The total EMI from the server might exceed allowable limits, because the hard drive generates additional EMI.

Drive cables

This section summarizes the drive cable requirements and constraints. The number of peripheral drives you can install depends on:

•The number supported by the bus

•The number of drive bays available

•The height of drives in the bays (1-inch or 1.6-inch high)

•The combination of SCSI and IDE devices

IDE requirements

The server includes an IDE controller and a cable that supports two devices. One of the two connectors on the cable is already used for the CD-ROM drive. The CD-ROM device is configured for Cable Select (CS) and is at the end of the cable; this defines the CD-ROM as the IDE master. If you install a second IDE device, and it is jumpered for Cable Select, connect the device on the middle IDE connector to configure the device as IDE slave, or at the end of the cable to configure the device for IDE master.

SCSI requirements

The server includes a two-channel SCSI controller. One channel is used for the hot-swap drive bay. If you don't use the second channel for adding a second hot-swap drive bay, you may use that channel for SCSI devices in the peripheral bay. SCSI cabling and connections must meet