Components, Continued

SCSI Termination MegaRAID 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 firmware handles all RAID and SCSI command processing and also supports:

Feature

Description

 

Disconnect/

Optimizes SCSI Bus seek.

 

Reconnect

 

 

Tagged Command

Multiple tags to improve random access

 

Queuing

 

 

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.

 

 

 

 

RAID Management The RAID utilities manage and configure the RAID system and MegaRAID, create and manage multiple disk arrays, control and monitor multiple RAID servers, provide error statistics logging and online maintenance:

•MegaRAID Configuration Utility

•WebBIOS Configuration Utility

•Power Console

•MegaRAID Manager

MegaRAID Configuration Utility It configures and maintains RAID arrays, formats disk drives, and manages the RAID system. It is independent of any operating system.

WebBIOS Configuration Utility It allows you to configure and manage a RAID system on a remote server over the Internet.

Power Console Plus It configures, monitors, and manages RAID servers from any Windows NT network node or remote server.

MegaRAID Manager A character-based utility for DOS, Linux, Solaris, SCO Unix, SCO UnixWare, OS/2, and Novell NetWare.

Cont’d

Chapter 4 Features

31