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Gateway ADAC ULTRA2 S466 User Manual

Page 51

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Chapter 4 Features

37

SCSI Connectors

ADAC Ultra2 S466 has two types of SCSI connectors:

a 68-pin high density internal connector and

a 68-pin external ultra-high-density connector.

Both connector types can be used for the SCSI channel.

SCSI Termination

ADAC Ultra2 S466 uses active termination on the SCSI
bus conforming to Alternative 2 of the SCSI-2
specifications. Termination enable/disable is automatic
through cable detection.

SCSI Firmware

The ADAC Ultra2 S466 firmware handles all RAID and
SCSI command processing and also supports:

Feature

Description

Disconnect/
Reconnect

Optimizes SCSI Bus seek.

Tagged Command
Queuing

Multiple tags to improve random access

Scatter/Gather

Multiple address/count pairs

Multi-threading

Up to 255 simultaneous commands with elevator sorting and
concatenation of requests per SCSI channel

Stripe Size

Variable for all logical drives: 2 KB, 4 KB, 8 KB, 16 KB, 32
KB, 64 KB, or 128 KB.

Rebuild

Multiple rebuilds and consistency checks with user-
definable priority.