symbios logic J21971S-0398, Руководство по установке

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Host Interface
Interface Options
Revision A, March 1998 Technical Reference 57
Host Interface
The command module contains or uses several interface
components, which include the following hardware elements:
●
Two array controllers (FC or SCSI)
●
One controller card cage (includes controller backpanel)
●
Interface cables (fibre optic, copper, or SCSI, plus Ethernet and
RS-232 cables)
These components attach the command module to drive units and to
other devices on the FC network or SCSI bus.
Interface Options
The command module supports both Fiber Channel (FC) and Small
Computer System Interface (SCSI, pronounced “scuzzy”) protocols
through its disk array controllers and cable connections. These
interface connections allow you to attach the command module to
multiple hosts or devices on either a SCSI bus or Fiber Channel
network.
There are two types of controllers available: SCSI or FC. The SCSI
controllers provide two SCSI host connections for 16-bit, differential
SCSI-2 buses. The FC controllers provide two host connections for
either fibre optic or copper networks. In addition, the controllers
manage all I/O between the hosts and drive modules through SCSI-
2 connectors provided on the back of the command module. The
controllers use these five independent drive channels to manage data
distribution and storage for up to fifty disk drives (10 drives per
channel x 5 drive channels).
The following sections provide detailed information regarding both
the Fiber Channel and the SCSI interfaces, cabling requirements, and
other things you should know regarding command module
installation requirements.