Installing Optional Peripherals; Scsi Configuration - Silicon Graphics POWER CHALLENGE User Manual

SCSI Configuration
Chapter 4
4.

Installing Optional Peripherals

This chapter describes the procedures you should use to correctly install
your Challenge deskside front-loading devices (FLDs) into the chassis.
Customer maintenance is limited to the outside of the chassis, which
comprises plastic panels, FLDs, customer-related connections, and cables
attached to the I/O panel. No user-serviceable parts are located within the
chassis. No internal parts or devices should be added to the system by the
end user. Doing so may void UL, CSA, and TUV safety agency approvals.
Check with your service provider or Silicon Graphics before attempting any
internal alteration to the system.
Challenge deskside systems support a sophisticated and complex
assortment of SCSI protocols. This results in a lower-cost, high-performance
system. It also requires extremely careful attention to proper configuration
and connection of drives.
Previous Silicon Graphics systems used differential SCSI exclusively to
extend the length of the bus. Your Challenge deskside system uses a
differential SCSI bus to communicate directly with fast (20 MB per sec) and
wide (16-bit) differential drives.
The Challenge SCSI scheme supports
• differential SCSI
• single-ended SCSI-1 and SCSI-2
• 8- and 16-bit transfer protocols
• transfer rates of 5 MB, 10 MB, and 20 MB per second
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