IBM System Storage DS5020 Installation, User's, And Maintenance Manual page 7

Connecting secondary interface cables . . . . . . . . . . . . . . . . 80
Configuring the storage subsystem . . . . . . . . . . . . . . . . . 81
Storage subsystem management methods . . . . . . . . . . . . . . 82
Host-agent (in-band) management method. . . . . . . . . . . . . 82
Direct (out-of-band) management method . . . . . . . . . . . . . 83
Connecting hosts to the DS5020 using Fibre Channel host ports
Fibre Channel and iSCSI connections . . . . . . . . . . . . . . . 86
Fibre Channel host loop configurations . . . . . . . . . . . . . . . 87
Redundant Fibre Channel host loops . . . . . . . . . . . . . . . 87
iSCSI configurations . . . . . . . . . . . . . . . . . . . . . . 90
DS5020 host iSCSI configurations . . . . . . . . . . . . . . . . 90
Installing the storage subsystem configuration . . . . . . . . . . . . . 94
Cabling the ac power supply . . . . . . . . . . . . . . . . . . . . 94
Chapter 4. Operating the storage subsystem . . . . . . . . . . . . . 95
Performing the DS5020 Health Check process . . . . . . . . . . . . . 95
Web pages . . . . . . . . . . . . . . . . . . . . . . . . . 96
Hardware responsibilities . . . . . . . . . . . . . . . . . . . . 96
Powering on the storage subsystem . . . . . . . . . . . . . . . . . 97
Turning on the storage subsystem . . . . . . . . . . . . . . . . . 97
Installing the DS Storage Manager client . . . . . . . . . . . . . . . 99
Monitoring status through software . . . . . . . . . . . . . . . . . 100
Finding controller, storage expansion enclosure, and drive information
Firmware updates . . . . . . . . . . . . . . . . . . . . . . 102
Troubleshooting the storage subsystem . . . . . . . . . . . . . . 102
Checking the LEDs . . . . . . . . . . . . . . . . . . . . . . . 103
AC power supply and fan unit LEDs
Front LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 104
Battery unit LEDs . . . . . . . . . . . . . . . . . . . . . . 105
Controller LEDs . . . . . . . . . . . . . . . . . . . . . . . 106
Seven-segment numeric display LEDs . . . . . . . . . . . . . . . 109
Powering off the storage subsystem . . . . . . . . . . . . . . . . . 111
Turning off the storage subsystem . . . . . . . . . . . . . . . . 111
Performing an emergency shutdown
Restoring power after an unexpected shutdown . . . . . . . . . . . 114
Recovering from an overheated power supply and fan unit . . . . . . . . 116
Cache memory and cache battery . . . . . . . . . . . . . . . . . 118
Cache memory . . . . . . . . . . . . . . . . . . . . . . . 118
Subsystem cache battery. . . . . . . . . . . . . . . . . . . . 119
Chapter 5. Replacing components . . . . . . . . . . . . . . . . 123
Handling static-sensitive devices . . . . . . . . . . . . . . . . . . 123
Service Action Allowed Status LED . . . . . . . . . . . . . . . . . 123
Replacing a controller . . . . . . . . . . . . . . . . . . . . . . 124
Installing hard disk drives
Working with hot-swap E-DDMs . . . . . . . . . . . . . . . . . . 129
Installing hot-swap E-DDMs. . . . . . . . . . . . . . . . . . . 132
Replacing hot-swap E-DDMs . . . . . . . . . . . . . . . . . . 133
Replacing multiple E-DDMs . . . . . . . . . . . . . . . . . . . 134
Replacing all E-DDMs at the same time . . . . . . . . . . . . . 135
Replacing the E-DDMs one at a time . . . . . . . . . . . . . . 138
Verifying the link rate setting . . . . . . . . . . . . . . . . . . . 140
Replacing an ac power supply and fan unit . . . . . . . . . . . . . . 142
Replacing a battery unit . . . . . . . . . . . . . . . . . . . . . 147
Replacing an SFP module . . . . . . . . . . . . . . . . . . . . 149
Replacing a midplane . . . . . . . . . . . . . . . . . . . . . . 152
. . . . . . . . . . . . . . . 103
. . . . . . . . . . . . . . . 114
. . . . . . . . . . . . . . . . . . . . 128
. . . . . 84
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