Adaptec ASC39320A-ROHS-KIT Guía de usuario Pagina 30

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Using the Adaptec SCSI Card and SCSI Devices
Using Ultra320/Ultra160 Hard Disk Drives
For the dual-channel cards, Adaptec recommends that you
connect your LVD (Ultra 320, Ultra160, and Ultra2) SCSI devices
to SCSI Channel A and your non-LVD SCSI devices (if any) to
SCSI Channel B. This allows the LVD SCSI devices to run at
their maximum performance levels of 320 MB/sec, 160 MB/sec,
or 80 MB/sec. Or you can connect LVD SCSI devices to both
SCSI channels. If you combine LVD and non-LVD SCSI devices
on the same SCSI channel, the data transfer rate of the LVD SCSI
devices will drop down to non-LVD SCSI performance levels of
up to 40 MB/sec.
Internal LVD SCSI devices come from the factory with
termination disabled and cannot be changed. Proper
termination is provided by the terminator at the end of the
internal LVD SCSI cable.
Adaptec SCSI Card 39320A
The following is a figure of the Adaptec SCSI Card 39320A.
68-pin Internal LVD/SE Connector
Channel A
68-pin External LVD/SE VHDCI
Connector Channel A
68-pin External LVD/SE VHDCI
Connector Channel B
68-pin Internal LVD/SE Connector
Channel B
U320 UG.book Page 3 Tuesday, September 23, 2003 1:47 PM
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