HP 3PAR Operating System Software - Manual (Page 95)

11 Viewing Remote-Copy System Information
For more information: Command: Description
“About the Remote-Copy Commands”
(page 261) showrcopy Configuration details
statrcopy Link throughput and latency statistics
statrcvv Virtual volume statistics (such as I/O
number, size, and completion time)
histrcvv Histogram of remote-copy volume
statistics
Solution Problem
Ensure that links are up on both systems and try the
command again. For more information, see
“Checking the
If the mirror system does not respond to a command after
5 minutes (the timeout limit), the following error message
appears:
Links between Systems for Unidirectional Remote Copy”
(page 80)
.
target system could not be
contacted
For more information: Command: Description
“Viewing Synchronization Task
Information” (page 96) showtask Synchronization details
“Viewing More Detail for a
Synchronization Task” (page 97) showtask -d Additional details for a
synchronization task
“Viewing Earlier Synchronization Tasks”
(page 97) showtask -t List of synchronization tasks started
within a specific timeframe
Additional Information
•
“How Remote Copy Tracks Synchronization Details” (page 95)
•
“Task Management Commands for Remote-Copy Synchronizations” (page 98)
•
The showtask command description in the HP 3PAR Command Line Interface Reference
•
Task management information: HP 3PAR StoreServ Storage Concepts Guide
To access these documents, go to the HP 3PAR StoreServ Storage site and click the Support link
for your product:
www.hp.com/go/3par
How Remote Copy Tracks Synchronization Details
When a volume synchronization or resynchronization takes place on a system running under HP
3PAR Remote Copy, the system creates tasks to track the initial synchronization or resynchronization
operations.
For example, when you use the startrcopygroup command on a remote-copy volume group
for the first time, the system creates a task for each primary volume group that is started and
synchronized in order to track the initial synchronization of the primary and secondary volume
groups.
Tracking Synchronous Volume Groups
For synchronous mode volume groups, the startrcopygroup command prompts resynchronization
each time it is used.
How Remote Copy Tracks Synchronization Details 95