Operating System Software Owner manual

minimum synchronization period, 201
N
N-to-1 Remote Copy
restrictions, 25
natural direction of data flow, 182
new consistency groups, 197
notes and cautions, 11
NotSynced, 210
P
performance considerations, 100
ports
controller node, install and configure, 33, 116
primary storage system
connect to backup storage system, 21
failure of, 209
primary volume, 192
promoting, 206
R
RCFC
setup, 215
read-only snapshot, 210
read/write snapshots
rules for adding to volume groups, 191
receiving links, 184
redundancy, 22
Remote Copy
bidirectional, 14
defined, 10
N-to-1, 15
over Fibre Channel, 22
setup, 215
pairs, 14
Synchronous Long Distance restrictions, 27
unidirectional, 14
virtual volumes, 190
Remote Copy pair, 181
Remote Copy target system, 182
remote system, 13
resynchronization
automatic, 201
scheduled, 201
setup, 51
RW snapshots
rules for adding to volume groups, 191
S
secondary
volume group, 192
sending links, 184
setrcopygroup command, 89
setrcopytarget command, 107
setting up
backup storage system, 48
Remote Copy transport layer, 33
showport command
showport -par, 39
showrcopy command, 49
showrctransport command
showrctransport -rcfc, 39
showtask command, 87
simplifying administration, 190
snapshot
data space, 188
definition, 203
deleting, 199
promoting, 206
snapshot space, 203
start copying, 53
startrcopy command, 47
switches
Gigabit Ethernet, 22
Synced, 211
Synced-stale, 211
synchronization
period
configuring, 201
minimum length, 201
synchronization types
full, 198
resynchronization, 199
Synchronous Long Distance Remote Copy
restrictions, 27
synchronous mode
how Remote Copy operates, 194
replication, when to use, 24
snapshot utilization, 204
synchronous volume groups
stopping and starting, 210
syncrcopy command, 196
system administrators, 1
T
target definition, 45
TCP/IP
connections, 215
links, 24
Thinly Provisioned Virtual Volumes (TPVVs)
allocation limit, 188
throughput, 99
traffic rates, 101
troubleshooting
not all volumes are synchronizing concurrently, 197
read request failures, 210
write errors, 209
types of asynchronous periodic synchronizations, 197
V
virtual volumes
creating, 25
limits, 25
limits in volume groups, 191
primary volume, 192
Remote Copy use, 188
rules for creating for Remote Copy, 189
secondary volume, 192
291