HP StorageWorks XP Remote Web Console Software - Manual (Page 119)

TrueCopy for z/OS user guide 119
NOTE: Pair mode specifies the update copy mode (see ” Update Copy Operations ” on page 27)
for the new pair(s): Synchronous or Asynchronous. The selection of mode has the greatest impact
on performance and must be considered carefully. Factors in mode selection include (but are not
limited to) the use of TC390 (for disaster recovery or migration), the number of pairs, and the write
I/O activity to the M-VOLs.
6. From the Add Pair window, enter the R-VOL for the pair, select the RCU, and select the initial copy
options for the pair(s) being created (see ” Creating TrueCopy Volume Pairs (Add Pair) ” on page 115).
7. Click Set to close the Add Pair window and set the parameters.
The list changes to the Pair Settings Parameter list (Add Pair). The Pair Settings Parameter list (Add Pair)
is updated by the parameter settings and displays all pairs being created. The initial copy options and
pair options you selected are applied to all pairs, but you can modify the options for each pair
individually as needed (see ” Modifying Parameters and Omitting Selected Volumes ” on page 111).
8. From the Pair Settings Parameter list (Add Pair), check the RCU S/N and SSID, R-VOL, and copy options
for each pair. You can modify the options as needed (see ” Modifying Parameters and Omitting
Selected Volumes ” on page 111). Verify that all TC390 options for each new pair are correct.
9. If you want to execute the Add Pair requests quickly, select the Use Time-Saving Mode check box above
the Pair Settings Parameter list (Add Pair).
10. Click Apply on the TrueCopy main window to create (start) the specified TC390 pair(s). The MCU will
start the initial copy operations according to the initial copy priority and the maximum initial copy
activities setting of the RCU.
11. From the TrueCopy main window, verify that the new TC390 pair(s) is/are displayed correctly (Pending
status) in the Volume list. To monitor the status of the new pair(s), click Refresh to update the information
in the Volume list or use the Pair Status window (see ” Viewing the Status of TrueCopy Volume Pairs (Pair
Status) ” on page 112) to monitor the detailed status of each pair.
NOTE: The Add Pair operation will be rejected if the M-VOL is in the correction access or correction copy
state. If this occurs, wait for the volume state to change and then repeat this procedure. If the status is not
displaying correctly, verify that the correct CU image is selected. For information on troubleshooting
suspended pairs, see ” General TrueCopy Troubleshooting ” on page 141.
CAUTION: If a timeout error occurs after clicking the Use Time-Saving Mode option, confirm on the
TrueCopy main window for which volumes the Add Pair operation could not be performed. Deselect the
Use Time-Saving Mode option for the failed volumes and retry the Add Pair operation.
Suspending TrueCopy Pairs (Suspend Pair)
The Suspend Pair command suspends TC390 pairs. When the Suspend Pair command is selected, the
Suspend Pair window is displayed. Use the Suspend Pair window to select the Suspend Pair options for the