Altos 12000 Series User’s Guide
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3.8.4
Dual Channel Configuration
The Altos 12000 server system utilizes the Adaptec AIC-7896 chipset as the
onboard SCSI controller.
There are two independent Ultra2 SCSI channels: Channel A and Channel B.
•
SCSI Channel A
•
Two SCSI connectors: 68-pin Ultra2 SCSI connector (CN32) and 50-pin
8-bit fast SCSI-2 connector (CN33)
•
CN32 is provided for Ultra2 SCSI hard disk drives. It may also be
used to connect external devices through the external SCSI port.
•
CN33 is provided for narrow SCSI devices (SCSI CD-ROM, tape
drive, etc.).
•
Connectors CN32 and CN33 are on the same channel. Therefore, if
you install both an LVD device and a single end/narrow device,
the bandwidth on this channel (A) will be the bandwidth of the
slowest device installed.
•
SCSI Channel B
•
One SCSI connector: Ultra2 SCSI connector CN29
Channel B Configuration
The following sections describe the two ways you can configure Channel B:
•
Combined (Circle)
the default configuration
•
Split (Serial)
Summary of Contents for Altos 12000 Series
Page 1: ...Altos 12000 Series User s Guide ...
Page 22: ...Altos 12000 Series User s Guide 1 2 2 Connecting a Mouse ...
Page 23: ...Index xxiii 1 2 3 Connecting a VGA Monitor ...
Page 42: ...Altos 12000 Series User s Guide 4 Insert the drive into the bay ...
Page 46: ...Altos 12000 Series User s Guide 4 Insert the drive into the bay ...