Veritas Volume Manager 4.1 Administrator's Guide (HP-UX 11i v3, February 2007)

480 VERITAS Volume Manager Administrator’s Guide
specifying task tags for 258
temporary area 37
transformation characteristics 40
transformations and volume length 40
types of transformation 255
viewing status of 258
online status 99
ordered allocation 205, 211, 218
OTHER_DISKS category 64
overlapped seeks 448
P
parity in RAID-5 29
partial device discovery 63
partition size
displaying the value of 121
specifying 122
path failover in DMP 104
pathgroups
creating 108
paths
setting attributes of 119
performance
analyzing data 405
benefits of using VxVM 399
changing values of tunables 410
combining mirroring and striping 401
effect of read policies 402
examining ratio of reads to writes 407
hot spots identified by I/O traces 408
impact of number of disk group
configuration copies 409
improving for instant snapshot
synchronization 292
load balancing in DMP 104
mirrored volumes 400
monitoring 403
moving volumes to improve 406
obtaining statistics for disks 406
obtaining statistics for volumes 404
RAID-5 volumes 401
setting priorities 403
striped volumes 400
striping to improve 407
tracing volume operations 403
tuning large systems 409
tuning VxVM 408
using I/O statistics 405
persistent device name database 74
persistent device naming 74
Persistent FastResync 50, 51, 53
physical disks
adding to disk groups 138
clearing locks on 145
complete failure messages 332
determining failed 331
displaying information 98
displaying information about 98, 135
displaying spare 334
enabling 95
excluding free space from hot-relocation
use 337
failure handled by hot-relocation 328
initializing 71
installing 76
making available for hot-relocation 335
making free space available for
hot-relocation use 338
marking as spare 335
moving between disk groups 144, 163
moving disk groups between
systems 144
moving volumes from 251
partial failure messages 331
postponing replacement 90
releasing from disk groups 168
removing 87, 90
removing from disk groups 138
removing from pool of hot-relocation
spares 336
removing with subdisks 88, 89
replacing 90
replacing removed 93
reserving for special purposes 98
spare 332
taking offline 96
unreserving 98
physical objects 4
ping-pong effect 105
plex attribute 278
plex conditions
IOFAIL 188
NODAREC 188
NODEVICE 188
RECOVER 188
REMOVED 188
plex kernel states
DETACHED 189