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BSU RAID Cable Configuration
The RAID options available for your system provide your system with the
added security of fault tolerance.
If you order a system with a RAID controller, the system is pre-cabled at the
factory (see Figure C-2 "RAID System Cabling Configuration".)
If you are adding a RAID controller you must install, cable, and configure the
controller. Refer to "Installing a RAID Controller Board" in Chapter 4.
One of the standard features of your BSU tower-based system is the three
channel SecuRAID 530 (Mylex eXtremeRAID 1100) controller board, which
gives your system the added security of fault tolerance. Your tower-based
system has been RAID pre-cabled at the factory. The RAID controller is
installed in PCI slot #21 and the third channel (2) is used to control the hot-swap
hard disk drives in the two SCSI hard disk drive bays.
The on-board Ultra 160/m and Ultra2-Wide SCSI controller AIC 7899 contains
two independent SCSI channels that share a single PCI bus master interface.
Each channel is capable of operations using either 8- or 16-bit SCSI providing
160 MB/s (Ultra 160/m) or 80 MB/s (Ultra2-Wide) throughput. As implemented
on the system I/O board controller A is used to support SCSI devices in the two
5 1/4-inch removable media bays. A 68 pin to 50 pin converter is also available
to be used when installing SCSI narrow devices. SCSI controller B connector (I)
is not used when the RAID controller is installed.
Figure C-2 illustrates the BSU RAID and SCSI bus cable configuration. The
RAID controller (D) has a SCSI interface cable (H) that attaches to a SCSI
backplane (F) supporting up to two SCSI SCA hard disk drives.
A 3 1/2-inch diskette drive is installed in the system and interfaces separately to
the system I/O board.
The on-board SCSI controller A also includes a connector located at the rear of
the system for connecting external Ultra2-Wide devices.
System Cabling Configurations C-5
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Troubleshooting
