HP P9000 RAID Manager Reference Guide (T1610-96037, October 2011)

Using this function, a client can confirm that a commit() has reached the remote site, and also the
backup utility on a remote site can split the cascading Business Copy volumes (Continuous Access
Asynchronous/Cnt Ac-J to Continuous Access Asynchronous/Business Copy/Cnt Ac-J) without
splitting Continuous Access Asynchronous/Cnt Ac-J.
More robust systems need to confirm the data consistency between the Continuous Access
Asynchronous/Cnt Ac-J PVol and S-VOL. In DB operations (e.g., Oracle), the commit() of DB
transaction (see the following figure) is needed to confirm that a last writing for the commit() on a
local site reached the remote site by using RAID Manager-unique API command.
Figure 25 Synchronization for Continuous Access Asynchronous/Cnt Ac-J
Syntax
pairsyncwait{ -h | -q | -z | -g <group> | -d <pair Vol>
| -d[g] <raw_device> [MU#] | -d[g] <seq#> <LDEV#> [MU#]
| -m <marker> | -t <timeout> | -nowait | -nomsg | -fq }
Options and parameters
DescriptionOption
Displays Help/Usage and version information.-h
Terminates the interactive mode and exits the command.-q
Makes the raidar command enter the interactive mode. The -zx option guards performing of the
HORCM in the interactive mode. When this option detects a HORCM shutdown, 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#]
94 Replication commands