Restoring power after an unexpected shutdown

.

.

.

137

Recovering from an overheated power supply and fan unit

.

.

.

138

Cache memory and cache battery

.

.

.

140

Cache memory . . . . . . . . . . . . . . . . . . . . . . . 141

Subsystem cache battery . . .

. . . . . . . . . . . .

. .

.

.

142

Chapter 5. Replacing components

. . . . . . . . . . . .

. .

.

.

145

Handling static-sensitive devices . . . . . . . . . . . . . . . . . . 145 Service Action Allowed Status LED . . . . . . . . . . . . . . . . . 145 Replacing a controller . . . . . . . . . . . . . . . . . . . . . . 146

Removing and replacing a bezel . . . .

. . . . . . . . .

. .

. .

.

150

Replacing a filter and filter retainer . . .

. . . . . . . . .

. .

. .

.

151

Working with hot-swapE-DDMs . . . .

. . . . . . . . .

. .

. .

.

151

Installing hot-swapE-DDMs.

. . . . . . .

. . . . . . . . .

.

.

153

Replacing hot-swapE-DDMs

. . . . . . .

. . . . . . . . .

.

.

155

Replacing multiple E-DDMs .

. . . . . . .

. . . . . . . . .

.

.

156

Replacing all E-DDMs at the same time .

. . . . . . .

. .

.

.

.

157

Replacing the E-DDMs one at a time . .

. . . . . . .

. .

.

.

.

159

Verifying the Link Rate setting

. . . . . . .

. .

.

.

.

161

Replacing an ac power supply and fan unit . .

. . . . . . .

. .

.

.

.

164

Replacing a dc power supply and fan unit . .

. . . . . . .

. .

.

.

.

169

Replacing a battery unit

. . . . . . .

. .

.

.

.

175

Replacing an SFP module

. . . . . . .

. .

.

.

.

177

Replacing a midplane . . . . . . . . . . . . . . . . . . . . . . 178

Chapter 6. Hardware maintenance

. .

. . . . . . . . .

. . . .

.

183

General checkout

. .

. . . . . . . . .

. . . .

.

183

Solving problems

. .

. . . . . . . . .

. . . .

.

183

Parts listing. . . . . . . . . . . . . . . . . . . . . . . . . . 188

Appendix A. Records . . . . . . . . . . . . . . . . . . . . . 191 Identification numbers . . . . . . . . . . . . . . . . . . . . . . 191 Storage subsystem and controller information record . . . . . . . . . . 192 Sample information record . . . . . . . . . . . . . . . . . . . 193 Installed device records . . . . . . . . . . . . . . . . . . . . . 194

Appendix B. Rack mounting template

.

195

Appendix C. Power cords

.

199

Appendix D. Additional DS4000 documentation

.

203

DS4000 Storage Manager Version 10 library

.

203

DS4800 Storage Subsystem library

.

204

DS4700 Storage Subsystem library

.

205

DS4500 Storage Subsystem library

.

206

DS4400 Storage Subsystem library

.

207

DS4300 Storage Subsystem library

.

208

DS4200 Express Storage Subsystem library

.

209

DS4100 Storage Subsystem library

.

210

DS4000 Storage Expansion Enclosure documents

.

211

Other DS4000 and DS4000-related documents

.

212

Appendix E. Accessibility . . . . . . . . . . . . . . . . . . . . 213

Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . 215

viIBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide

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IBM DS4700 manual Replacing components, Hardware maintenance, Appendix B. Rack mounting template