IBM DS4200 Installation, User's, And Maintenance Manual page 7

Host-agent (in-band) management method . . . . . . . . . . . . . 71
Direct (out-of-band) management method . . . . . . . . . . . . . 71
Connecting hosts to the DS4200 Express . . . . . . . . . . . . . . 72
Fibre channel connections . . . . . . . . . . . . . . . . . . . . 74
Fibre channel host loop configurations . . . . . . . . . . . . . . . 74
Redundant host and drive loops
Installing the storage subsystem configuration . . . . . . . . . . . . . 77
Cabling the power supply . . . . . . . . . . . . . . . . . . . . . 78
Chapter 4. Operating the storage subsystem . . . . . . . . . . . . . 79
Performing the DS4000 Health Check process . . . . . . . . . . . . . 79
Web pages . . . . . . . . . . . . . . . . . . . . . . . . . 80
Hardware responsibilities . . . . . . . . . . . . . . . . . . . . 80
Powering on the storage subsystem . . . . . . . . . . . . . . . . . 81
Turning on the storage subsystem . . . . . . . . . . . . . . . . . 81
Installing the DS4000 Storage Manager client
Monitoring status through software
Finding controller, storage expansion enclosure, and drive information . . . 86
Firmware updates . . . . . . . . . . . . . . . . . . . . . . . 86
Troubleshooting the storage subsystem
Checking the LEDs . . . . . . . . . . . . . . . . . . . . . . . 88
Power supply and fan unit LEDs . . . . . . . . . . . . . . . . . 88
Front LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 89
Battery unit LEDs . . . . . . . . . . . . . . . . . . . . . . . 90
Controller LEDs . . . . . . . . . . . . . . . . . . . . . . . 91
Seven-segment numeric display LEDs . . . . . . . . . . . . . . . 93
Powering off the storage subsystem . . . . . . . . . . . . . . . . . 94
Turning off the storage subsystem . . . . . . . . . . . . . . . . . 94
Performing an emergency shutdown . . . . . . . . . . . . . . . . 97
Restoring power after an unexpected shutdown . . . . . . . . . . . . 97
Recovering from an overheated power supply and fan unit . . . . . . . . . 98
Cache memory and cache battery . . . . . . . . . . . . . . . . . 101
Cache memory . . . . . . . . . . . . . . . . . . . . . . . 101
Subsystem cache battery
Chapter 5. Replacing components . . . . . . . . . . . . . . . . 105
Handling static-sensitive devices . . . . . . . . . . . . . . . . . . 105
Service Action Allowed Status LED . . . . . . . . . . . . . . . . . 105
Replacing a controller . . . . . . . . . . . . . . . . . . . . . . 106
Working with hot-swap EV-DDMs . . . . . . . . . . . . . . . . . . 110
Installing hot-swap EV-DDMs . . . . . . . . . . . . . . . . . . 112
Replacing hot-swap EV-DDMs . . . . . . . . . . . . . . . . . . 114
Replacing multiple EV-DDMs . . . . . . . . . . . . . . . . . . 115
Replacing all EV-DDMs at the same time . . . . . . . . . . . . . 116
Replacing the EV-DDMs one at a time . . . . . . . . . . . . . . 118
Verifying the Link Rate setting
Replacing a power supply and fan unit . . . . . . . . . . . . . . . . 123
Replacing a battery unit . . . . . . . . . . . . . . . . . . . . . 128
Replacing an SFP module . . . . . . . . . . . . . . . . . . . . 130
Replacing a midplane . . . . . . . . . . . . . . . . . . . . . . 131
Chapter 6. Hardware maintenance
General checkout . . . . . . . . . . . . . . . . . . . . . . . 135
Solving problems . . . . . . . . . . . . . . . . . . . . . . . 135
Parts listing . . . . . . . . . . . . . . . . . . . . . . . . . . 140
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