Replication Commands; Paircreate; Syntax - HP StorageWorks P9000 - Disk Arrays Reference Manual

2 Replication commands

This chapter provides specifications for the replication commands.

paircreate

CAUTION:
Synchronous, Continuous Access Journal, and Business Copy initial copy operations, which overwrite
all data on the secondary/target volume. If the primary and secondary volumes are not identified
correctly, or if the wrong options are specified (For example, vl instead of vr), data is transferred
in the wrong direction and the data in the target of transferring will be overwritten.
The paircreate command is used to create a new volume pair from two unpaired volumes. The
paircreate command can create either a paired logical volume or a group of paired volumes. The
paircreate command allows you to specify the direction (local or remote) of the pair generation
(see Figure 3 (page
has the primary volume. If remote (vr option) is specified, the remote server has the primary volume.
The -split option of the paircreate command (Business Copy only) allows you to simultaneously
create and split pairs using a replication command only. When -split is used, the pair status changes
from COPY to PSUS (instead of PAIR) when the initial copy operation is complete.
Figure 3 Pair creation
Before issuing the paircreate command, make sure that the secondary volume is not mounted on
any system. If the secondary volume is found to be mounted after paircreate, delete the pair (pairsplit
-S), unmount the secondary volume, and then reissue the paircreate command.
The paircreate command terminates before the initial copy operation is complete (except when
the nocopy option is specified). Use the pair event waiting or pair display command to verify that
the initial copy operation completed successfully (status changes from COPY to PAIR, or from COPY
to PSUS if the -split option was specified). The execution log file also shows completion of the initial
copy operation.
Continuous Access Synchronous only: The paircreate command cannot execute copy rejection in
case of an error condition due to maintenance work on the target volume.

Syntax

paircreate { -h | -q | -z | -I[H][M][instance#] or I[TC][SI][instance#] | -g <group>
| -d <pair Vol> | -d[g] <raw_device> [MU#] | -FHORC [MU#] -d[g] <seq#> <LDEV#> [MU#]
| -f[g] <fence> [CTGID] | -vl | -vr | -pvol | -c
| -jp <id> | -js <id> | -pid <PID> | -fq <mode>
| -cto <o-time> <c-time> <r-time> | -nocsus }
Use the paircreate command with caution. The command starts the Continuous Access
21)). If local (vl option) is specified, the server issuing the paircreate command
<size> | -nocopy | -nomsg | -split | [-m <mode>]
paircreate 21