Releasing truecopy for mainframe pairs – HP StorageWorks XP Remote Web Console Software User Manual
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4.
In the tree, select the CU or the upper CU grouping, which contains the pair(s) to be
resynchronized. Use the Display Filter as needed to display the desired pairs (for example,
select Async and Suspend status only).
5.
In the list, select the M-VOL(s) of the pair(s) to be resynchronized. Select either Sync or Async
pairs (not both). To use the Group Resume Range option (async only), select only one pair in
the group.
6.
Right-click, and click Resume Pair to open the Resume Pair dialog box (see
).
7.
On the Resume Pair dialog box, select the desired resynchronize options, and click Set to
close the dialog box. The preview list displays the requested resynchronize pair operation(s).
To resynchronize all suspended pairs in a consistency group, select the Group Resume Range
option.
8.
Verify the requested operation(s) in the preview list. Make sure that the resynchronize options
for each pair are correct.
To change one or more operations, select the operation(s) from the preview list, right-click,
and click Modify. To remove one or more operations, select the operation(s) from the preview
list, right-click, and click Delete. To cancel all operations, select all the operations in the preview
list, right-click, and click the Delete command, or click Cancel.
If you selected the Group Resume Range option, time saving mode is not available.
9.
To start the operation(s), click Apply.
If one or more operation(s) did not start normally, the preview list displays only the operation(s)
that did not start normally. An error code is displayed on the Error Code column in the preview
list. To display an error message, select one LU, right-click, and click Error Detail. After you
see the error message, click OK to close the error message.
10.
On the Pair Operation window, verify that the resynchronize pair operation(s) is/are completed
successfully (Pending and then Duplex status in the list). To monitor the progress of the
resynchronize pair operation(s), click File, and then Refresh on the menu bar of the Remote
Web Console main window to update the information in the list, or use the Detailed Information
dialog box to monitor the detailed status of each pair. You can also monitor the host console
messages (IEA494I vs. IEA491E) to verify the operation(s).
Releasing TrueCopy for Mainframe Pairs
A TrueCopy for Mainframe pair should be released from the MCU only when it is no longer
necessary to maintain a remote copy of the M-VOL. When a TrueCopy for Mainframe pair is
released from the MCU, the MCU stops all TrueCopy for Mainframe copy operations for that pair
and changes the pair status of the M-VOL and R-VOL to simplex. After a pair is released, the MCU
continues to accept all subsequent write I/O operations to the M-VOL and will not keep track of
the M-VOL updates.
A TrueCopy for Mainframe pair should be released from the RCU only if you need to access the
R-VOL, for example, to perform ICKDSF on the R-VOL or for disaster recovery. When a TrueCopy
for Mainframe pair is released from the RCU, the RCU changes the R-VOL pair status to simplex
but does not change the pair status of the corresponding M-VOL. When the MCU performs the
next TrueCopy for Mainframe operation, the MCU detects that the R-VOL status changed and
changes the status of the M-VOL to suspended-delete pair to RCU. When you release a pair from
the RCU in order to access the R-VOL, remember that the R-VOL and M-VOL have the same VOLSER,
and take appropriate precautions to prevent a system problem due to duplicate VOLSERs. To restart
a pair which was released from the RCU, you must first release the pair from the MCU, and then
add the pair from the MCU using the appropriate initial copy option (Entire Volume or None) to
restart the pair.
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