B–2 www.hp.com Hardware Reference Guide
PATA Hard Drive Installation Guidelines
Guidelines for Installing PATA Drives
When installing additional drives, follow these guidelines:
■ If using multiple devices, HP recommends that the devices be
split between the primary and secondary channels for optimum
performance. Use an additional cable to connect the additional
device to the system board.
■ 80-conductor PATA cable:
❏ 18 inches maximum total length, 80-conductor cable with
maximum spacing of 6 inches between Device 0 and
Device 1.
80-Conductor PATA Cable
■
For optimal performance, connect hard drives to the primary
controller. Connect expansion devices, such as ATA optical drives
and tape drives, to the secondary controller.
■ Install either a third-height or a half-height drive into a
half-height bay.
■ Install guide screws to ensure that the drive lines up correctly in
the drive cage. Hard drives use 6-32 standard guide screws. Four
extra guide screws are installed on the hard drive bracket under
the access panel. HP-supplied standard screws are silver.
■ If only one device is connected to a cable, that device must be
attached to the end (Device 0) connector.
1 Device 0 (primary drive) connector
2 Device 1 (secondary drive) connector
3 System board connector
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