Index_R

R

RAID

Advisory Board (RAB), 204

defined, 203

levels comparison, 204–5

levels illustration, 203

reliability impact, 208

solution, 203–5

RAID0, 16–17

data and I/O characteristics, 204

illustrated, 203

implementation, 204

RAID0+1, 237

defined, 205

illustrated, 203

RAID1

data and I/O characteristics, 204

illustrated, 203

implementation, 204

volumes, 236

RAID2, 204

RAID3, 205

RAID4, 205

RAID5, 16, 237

data and I/O characteristics, 205

illustrated, 203

implementation, 205

memory, 195–96

performance penalties, 103

RAID6, 206

RAID7, 206

RAID10, 206

RAID controllers, 208–13

cache backup, 210–11

data protection and, 210–11

hardware-based, 101

manageability, 212–13

market, 208

minimum criteria, 102, 103

operation management, 209

performance, 209–10

selecting, 208–9

server-neutral, 208

vendor support, 213

Random I/O, 60–62

Reactive management, 350–53

Reader assumptions, this book, 21–22

Recipient filtering, 319

Recipient Update Service (RUS), 307

Recoverability, 13

backup/restore operations, 14

defined, 13

Recovery

action point, 38–39

disaster, 135–53

disks/CD-ROMs, 178–79

hard, 113

IIS Metabase, 97

planning scenarios, 97–98

point-in-time, 144

roll-forward, 144

soft, 112–13

strategy selection, 167–71

technology, 112–13

unit size, reducing, 171–72

using VSS, 143–44

Recovery-point focus, 41–42

defined, 41–42

recovery-time focus vs., 41–42

Recovery servers, 146–50

concept, 146

configuration, 148–49

deploying, 148

Exchange 5.5, 146–47

Exchange 2000, 148–52

scenario, 147

Recovery Storage Group (RSG), 120

concept, 151

defined, 150

illustrated, 151

leveraging, 150–53

usage scenarios, 152

Redundancy systems, 197–98

Relaying, 302–3

Reliability, 6, 11–15, 277

defined, 13

downtime and, 12

Exchange Server, improving, 10

expression, 12

formulas, 200

I/O buses, 197

measurement formulas, 13

RAID impact, 208

recoverability and, 13

See also Four pillars

Reserved log files, 84–85

Resource dependencies

defined, 251

Exchange 2000, 262–63

tree, 263

Resources, 249–50

DLL, 254–55, 261

failover, 292

groups, 251

ownership, 292

See also Clusters

RESTORE.ENV file, 134

Restore operation, 132–35

beginning, 132–33

completing, 134–35

database copying, 132–33

environment, 134

illustrated, 133

log/path file restoration, 133

parallel, 158

See also Backup operation

Restoring

data, 158

differential backups, 116

full backups, 116

incremental backups, 116

log files, 133

off-line, 121–22

patch files, 133

See also Backup/restore; Backups

Roll-forward recovery, 144

Root causes, 15