Contents

 

Viewing a Fibre Channel Device

124

 

StorNext Log Rolling Administration

125

 

Changing Log Rolling Times

125

 

Log Rolling Options

125

 

Avoiding Poor System Performance

126

Appendix C

StorNext Files

127

 

The example.cfg File

127

 

Cluster-Wide Central Control

134

 

Cluster-Wide Control File Example

135

 

Commonly Used SNFS Files

138

Appendix D

Quality of Service Guide

142

 

Overview

143

 

Active vs. Passive

143

 

Supported Platforms

143

 

Non-Realtime Operation

144

 

Configuration

144

 

Unit of I/O

144

 

Converting MB/sec to I/O/sec

145

 

Real-time I/O

149

 

SetRtio

150

 

Oversubscription

150

 

Handles

150

 

Ungated files

151

 

Calculating Available RTIO

152

 

Non-Realtime I/O Configuration

152

 

Configuration File Examples

153

 

Callbacks

154

 

Callback Failures

155

 

Tokens

156

 

Failure Semantics

158

 

FSM Failures

159

 

Client Failures

159

 

Client Token Releases

160

 

Monitoring

160

 

Sharing Disk Resources

161

StorNext 3.5 Installation Guide

vi

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Quantum 3.5 manual Viewing a Fibre Channel Device 124, 125