Logic MegaRAID Express User's Guide
Table Of Contents
- 1 Overview
- 2 Introduction to RAID
- 3 RAID Levels
- 4 Features
- 5 Configuring MegaRAID Express 500
- 6 Hardware Installation
- Checklist
- Installation Steps
- Summary
- 7 Cluster Installation and Configuration
- Software Requirements
- Hardware Requirements
- Installation and Configuration
- Driver Installation Instructions under Microsoft Windows 2000 Advanced Server
- Network Requirements
- Shared Disk Requirements
- Cluster Installation
- Installing the Windows 2000 Operating System
- Setting Up Networks
- Configuring the Cluster Node Network Adapter
- Configuring the Public Network Adapter
- Verifying Connectivity and Name Resolution
- Verifying Domain Membership
- Setting Up a Cluster User Account
- Setting Up Shared Disks
- Configuring Shared Disks
- Assigning Drive Letters
- Verifying Disk Access and Functionality
- Cluster Service Software Installation
- Configuring Cluster Disks
- Validating the Cluster Installation
- Configuring the Second Node
- Verify Installation
- SCSI Drive Installations
- Configuring the SCSI Devices
- Terminating the Shared SCSI Bus
- 8 Troubleshooting
- A SCSI Cables and Connectors
- B Audible Warnings
- C Cluster Configuration with a Crossover Cable
- Glossary
- Index
MegaRAID Express 500 Hardware Guide
2
Single Ended and Differential SCSI Buses
The SCSI standard defines two electrical buses:
• a single ended bus
• low-voltage differential bus
Maximum Cable Length for SCSI Standards
Standard Single ended LVD Maximum Number of
Drives
SCSI I 6 m 12 m 7
Fast SCSI 6 m 12 m 7
Fast Wide SCSI 6 m 12 m 15
Ultra SCSI 1.5 m 12 m 7
Ultra SCSI 3 m 12 m 3
Wide Ultra SCSI 12 m 15
Wide Ultra SCSI 1.5 m 12 m 7
Wide Ultra SCSI 3 m 12 m 3
Ultra 2 SCSI 25 m 1
Ultra 2 SCSI 12 m 7
Wide Ultra 2 SCSI 25 m 1
Wide Ultra 2 SCSI 12 m 15
Ultra3 SCSI 25m 1
Ultra3 SCSI 12m 7
Wide Ultra3 SCSI 25m 1
Wide Ultra3 SCSI 12m 15
SCSI Bus Widths and Maximum Throughput
SCSI Standard SCSI Bus Width SCSI Throughput
SCSI I 8 bits 5 MB/s
Fast SCSI 8 bits 10 MB/s
Fast Wide SCSI 16 bits 20 MB/s
Ultra SCSI 8 bits 20 MB/s
Wide Ultra SCSI 16 bits 40 MB/s
Ultra 2 SCSI 8 bits 40 MB/s
Wide Ultra 2 SCSI 16 bits 80 MB/s
Ultra3 SCSI 8 bits 80 MB/s
Wide Ultra3 SCSI 16 bits 160 MB/s