Features - Acer Altos 9100 Series User Manual

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The BP-W8 wide SCSI backplane subsystem consists of a backplane board and
drive trays that support wide SCSI hard disk drives. The BP-W8 backplane is
specifically designed for a tower housing that accommodates up to eight SCSI
drives.
The backplane subsystem has the following major features:
•
"Hot-swap" feature that allows replacement of a defective hard drive even
while the system is in full operation. This feature requires a RAID controller
board and RAID drivers.
•
Two LEDs on the SCSI drive front panel to indicate power and drive failure.
•
Supports a mixed configuration of wide (16-bit) SCSI drives in a single
channel.
•
Allows 'split' and 'combine' SCSI-channel configurations.
•
SCSI ID strapping that allows wide SCSI HDD ID configuration through the
backplane switches instead of configuring the individual drive IDs.
•
Supports drive trays with wide SCSI connectors.
•
Fixed 2.85-volt and controlled impedance of 90 ohms for more stable hard disk
performance (for ultra SCSI, the impedance is 90 ohms ±10%).
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