Features – NCR S26 User Manual
Page 142
Features
D-2
Hot Plug Backplane
Features
The hot plug ultra-wide SCSI backplane subsystem consists of a BP-W8
backplane and drive trays that support wide SCSI hard drives. It is
specifically designed for a tower housing (IDUN) and accommodates up to
eight SCSI drives.
The backplane subsystem has the following major features:
•
Hot plug feature that allows replacement of a defective hard drive even
while the system is in full operation
•
Two LEDs on the SCSI drive front panel to indicate power and drive
failure
•
Supports ultra-fast/wide (16-bit) devices
•
Allows “split” and “combine” SCSI-channel configurations
•
Fixed 2.85-volt and controlled impedance of 90 ~ 110 ohms for more
stable hard disk performance (For ultra SCSI, the impedance is 90 ±10%)
•
Supports other external SCSI devices that are not directly connected to the
backplane board