Index
A
a hot-swap E-DDM
replacing 133
a hot-swap hard disk drive
replacing 133
about this document xix
ac power cords and receptacles 26
ac power recovery 26
ac power requirements 26
ac power supply
cabling 94
ac power supply and fan unit
replacing 45, 142
ac power supply and fan unit, removal 40
ac site wiring requirements 26
accessible documentation 208
acoustical noise emission values 25
airflow 15, 24, 26
altitude ranges 24
area requirements 21
audience xix
B
battery
LEDs 119
replacing 119
battery unit
LEDs 18, 105
overview 16
replacing 147
bays
hot-swap drive 7
best practices 6
blank trays 130
board ID 101
BOOTP server
sample network 12
C
cabling
ac power supply 94
cabling rules 69
cabling schemes
DS5020 and storage expansion enclosures 69
one DS5020 and one EXP520 storage expansion
enclosure 72
one DS5020 and three or more EXP520 storage
expansion enclosures 74
one DS5020 and two EXP520 storage expansion
enclosures 73
cabling the storage subsystem
connecting host to RAID controller 84
connecting secondary interface cables 80
connecting storage expansion enclosures 56
cabling topologies
one DS5020 and four storage expansion
enclosures 65
one DS5020 and one storage expansion
enclosure 61
one DS5020 and three storage expansion
enclosures 64
one DS5020 and two or more storage expansion
enclosures in a mixed configuration 68
one DS5020 and two storage expansion
enclosures 62
one DS5020 and up to six storage expansion
enclosures 66
storage expansion enclosures and storage
subsystem 59
cache battery
See battery 119
cache memory
cache active LED 118
size of 118
caution and danger notices xiii
checking the LEDs 103
components
4 Gbps hard disk drives 7
battery unit 16
battery units 7
controllers 7
power supply and fan units 7
SFP modules 7
weights 22
Concepts Guide 191
configuration, installing the storage subsystem 94
contamination, particulate and gaseous 208
controller
information record 172
removal 39
replacing 44
controller information 101
controllers
description 9
LEDs 106
location 9
replacing 124
cooling 26
Copy Services Guide 191
customer replaceable units (CRUs) 7
removal 38
removing a ac power supply and fan unit 39
removing a controller 39
removing a hard disk drive 41
removing an ac power supply and fan unit 40
removing an E-DDM 41
removing E-DDMs 39
removing hard disk drives 39
replacing 44
replacing the battery unit 147
replacing the controllers 124
© Copyright IBM Corp. 2009, 2012 223
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