IBM DS4700 manual Link rate setting, verifying

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-swapE-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

234IBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide