Logic MegaRAID SCSI 320-1 RAID Controller User's Guide

1-2 Overview
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
1.1 Features
MegaRAID SCSI 320-1 features include:
· A high-performance input/output (I/O) migration path while
preserving existing PCI-SCSI software
· SCSI data transfers up to 320 Mbytes/s
· Synchronous operation on a Wide low-voltage differential (LVD) SCSI
bus
· Support for up to 15 LVD SCSI devices on the Wide bus
· An Intel GC30302 chip that performs RAID calculations and routing
· Support for 32 or 64 Mbytes of SDRAM on-board cache memory,
used for read and write-back caching and for RAID 5 parity
generation
1.2 SCSI Channel
The MegaRAID SCSI 320-1 upgrade card includes one Ultra3 SCSI
channel. The channel is powered by an LSI Logic 53C1020 Ultra320
SCSI processor.
1.3 NVRAM and Flash ROM
A 32 KB x 8 NVRAM stores RAID system configuration information. The
MegaRAID SCSI 320-1 firmware is stored in flash ROM for easy
upgrade.
1.4 SCSI Connectors
The MegaRAID SCSI 320-1 has one very high-density 68-pin external
connector for external storage subsystem, and one high-density 68-pin
internal connector.