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link rate setting, verifying 161
loop configurations
overview 107
redundant 108
loop redundancy, described 68
M
managed hub
in fibre channel loop configurations 107, 108
using to connect host to RAID controller 105
memory, cache
cache active LED 141
size of 140
midplane
replacing 178
Migration Guide 203
mixed configuration
cabling topologies 76
one DS4700 Express and two or more storage
expansion enclosures 94
multiple drives
replacing 156
multiple E-DDMs
replacing 156
My Support 5
N
notes, important 216
notices 215
electronic emission 218
FCC, Class A 218
safety and caution xv
static-sensitive precautions 145
numbers, drive ID 8
numeric display 132
O
out-of-band management method 102
overheating, power supplies 138
overview of the product 1
P
part numbers, power cords 199
particulate contamination 217
planned shutdown, powering off 134
power cord use by country 199
power cords 199
power indicator light
power supply and fan unit 12
power outage
due to overheated power supplies 138
power supply and fan unit
described 12
power supply and fan units (ac)
description 12
power supply and fan units (dc)
overview 14
power-fan canister
recovering from shutdown 138
power, restoring after an emergency 137
powering off
for planned shutdown 134
powering on
after planned shutdown 119
after power supply shutdown 138
at initial startup 119
problem
determination 183
product ID 123
product overview 1
R
rack cabinet
EIA 310-D Type A 19 inch 38
preparatory procedures 36
rail installation 38
site preparation 34
rack mounting template for DS4700 Express 195
RAID controller
cache battery 142
connecting Ethernet cable to 100
connecting host to 104
connecting RS-232 (serial) cable 100
RAID controllers) 6
rail installation 38
reader comment form processing xxix
readme files
finding online xxvii
records
identification numbers 191
installed device 194
redundant drive channel pair, defined 68
redundant host and drive loops 108
removal of the CRUs 40
replacing
bezel 150
filter and filter retainer 151
replacing components
battery unit 175
controller 146
handling static-sensitive devices 145
Service Action Allowed Status LED 145
replacing CRUs
ac power supply and fan unit 49
controller 48
dc power supply and fan unit 50
hot-swap E-DDMs 52
hot-swap hard disk drives 52
replacing failed
ac power supply and fan unit 164
dc power supply and fan unit 169
midplane 178
SFP module 177
resources
Web sites xxvii
234 IBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide