HP XP7 RAID Manager Reference Guide (T1610-96064)

The primary volume's server is automatically detected by the pairsplit command, so the server does
not need to be specified in the pairsplit command parameters. If the -S option (simplex) is used,
the volume pair is deleted, the volumes are returned to the simplex state, and the primary and
secondary volume status is lost. Paired volumes are split as soon as the pairsplit command is issued.
If you want to synchronize the volumes, the pairsplit command must be issued after write I/Os to
the paired volume have completed.
You can create and split Business Copy pairs simultaneously using the -split option of the paircreate
command (see “paircreate” (page 25)).
You can delete pairs by using the -S option of the pairsplit command. When the pairsplit -S command
is issued, the specified pair is deleted, and each volume is changed to SMPL (simplex) mode. If
you want to re-establish a pair that has been deleted, you must use the paircreate command (not
pairresync).
Note on Quick Split: If '$HORCC_SPLT=QUICK' environment variable is set (XP12000 Disk
Array/XP10000 Disk Array, and later), the pairsplit and paircreate -split operations are performed
as Quick Split regardless of the system option mode 122 setting on the SVP. The $HORCC_SPLT
environment variable is ignored by XP1024/XP128 Disk Array.
Syntax
pairsplit {-h | -q | -z | -I[H][M][instance#] or I[TC][SI][instance#]| -g <group> | -d <pair Vol>|
-d[g] <raw_device> [MU#] | -FHORC [MU#] | -FMRCF [MU#]| -d[g] <seq#> <LDEV#> [MU#] | -r | -rw | -S |
-R[S][B] | -P | -l| -nomsg | -C <size> | -E | -fq <mode>}
Options and parameters
Only one pairsplit option (-r, -rw, -S, -R, -P, -C or -E) can be specified. If more than one option is
specified, only the last option is executed.
DescriptionOption
Displays Help/Usage and version information.-h
Terminates the interactive mode and exits this command.-q
Makes the pairsplit command enter the interactive mode. The -zx option guards performing of the
HORCM in the interactive mode. When this option is specified and a HORCM shutdown is detected,
interactive mode terminates.
-z or -zx
OpenVMS cannot use the -zx option
Specifies the command as [HORC]/[HOMRCF] or [Continuous Access Synchronous]/[Business Copy],
and used when specifying the RAID Manager instance number.
-I [H] [M]
[instance#]
or
-I [TC] [SI]
[instance#]
Specifies a group name defined in the configuration definition file. This option must always be
specified. The command is executed for the specified group unless the -d <pair Vol> option is
specified.
-g <group>
Specifies the paired logical volume name defined in the configuration definition file. When this option
is specified, the command is executed for the specified paired logical volumes.
-d <pair Vol>
Searches whether the specified raw_device is included in a group on the configuration definition
file (local instance). If it is in the group, the target volume is executed as the paired logical volume
-d[g]
<raw_device>
[MU#] (-d) or group (-dg). This option is effective without specification of -g <group> option. If the specified
raw_device is contained in two or more groups, the command is executed for the first group.
Searches whether the specified LDEV is included in a group on the configuration definition file (local
instance). If it is in the group, the target volume is executed as the paired logical volume (-d) or group
-d[g] <seq#>
<LDEV#> [MU#]
(-dg). This option is effective without specification of '-g <group>' option. If the specified LDEV is
contained in two or more groups, the command is executed on the first group. The <seq #> <LDEV
pairsplit 33