IBM DS4200 Installation, User's, And Maintenance Manual page 10

50. One DS4200 Express and a maximum of six EXP420 storage expansion enclosures behind a pair
of DS4200 Express drive ports . . . . . . . . . . . . . . . . . . . . . . . . . . 68
51. Ethernet and serial port locations on the DS4200 Express . . . . . . . . . . . . . . . 70
52. Host-agent (in-band) managed storage subsystems . . . . . . . . . . . . . . . . . . 71
53. Direct (out-of-band) managed storage subsystems . . . . . . . . . . . . . . . . . . 72
54. Location of host cables on RAID controllers on the DS4200 Express . . . . . . . . . . . . 73
55. Cabling diagram for two redundant host connections . . . . . . . . . . . . . . . . . . 74
56. Examples of redundant host direct attached fibre channel configurations . . . . . . . . . . 75
57. Example of a single SAN fabric configuration . . . . . . . . . . . . . . . . . . . . 76
58. Example of a dual SAN fabric configuration . . . . . . . . . . . . . . . . . . . . . 76
59. Example of two storage subsystems in a dual SAN environment . . . . . . . . . . . . . 77
60. Example of a two-cluster configuration . . . . . . . . . . . . . . . . . . . . . . . 77
61. Power supply switches and connectors for the DS4200 Express . . . . . . . . . . . . . 82
62. Power supply and fan unit LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 88
63. Front LEDs and controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
64. Battery unit LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
65. Rear controller LEDs, controls, and connectors . . . . . . . . . . . . . . . . . . . . 91
66. Numeric display LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
67. Cache Active LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
68. Battery unit LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
69. Unlocking the SFP module latch - plastic variety . . . . . . . . . . . . . . . . . . . 107
70. Unlocking the SFP module latch - wire variety . . . . . . . . . . . . . . . . . . . 107
71. Removing a controller from the DS4200 Express . . . . . . . . . . . . . . . . . . 108
72. Installing a controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
73. Hot-swap hard disk drive LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 113
74. EV-DDM CRU handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
75. Link rate LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
76. Link rate switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
77. Replacing a power supply and fan unit . . . . . . . . . . . . . . . . . . . . . . 127
78. Removing and replacing a battery unit from the controller chassis . . . . . . . . . . . . 129
79. Replacing an SFP module . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
80. Replacing a midplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
81. DS4200 Express storage subsystem parts list . . . . . . . . . . . . . . . . . . . . 141
82. Front rack mounting template . . . . . . . . . . . . . . . . . . . . . . . . . . 147
83. Rear rack mounting template . . . . . . . . . . . . . . . . . . . . . . . . . . 148
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IBM System Storage DS4200 Express Storage Subsystem: Installation, User's and Maintenance Guide