Hitachi TrueCopy for IBM z/OS User and Reference Guide (T5211-96001, June 2007)

6-18 Performing TrueCopy for z/OS Pair Operations
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
MCU-RCU Path: Fibre.
Update Type: Synchronous or asynchronous.
Copy Pace: 3 tracks or 15 tracks (displayed during initial copy and resync
copy).
Initial Copy Priority: 0 - 256 (displayed during initial copy and resync
copy).Note: 0 is the value for pairs created by CESTPAIR command or
Business Continuity Manager.
M-VOL Fence Level: Data, Status, or Never.
R-VOL Write: Status of the R-VOL write suspend option (enabled or
disabled).
Pair Established: Date and time that the pair was established.
Last Updated: Date and time that the pair status was last updated.
Pair Copy Time: Time that was taken to copy pairs.
Note: The time that is shown in Pair Copy Time differs from the time that is
shown in Copy Time on the History window.
To create a pair:
1. MCU receives a request to create a pair.
2. MCU receives a request to start the creating pair operation.
3. The creating pair operation is started according to the conditions of initial
copy priority and maximum initial copy activities.
Pair Copy Time on the Detailed Information dialog box shows the amount of
time that has been needed from step 3 to the completion of the creating pair
operation (i.e., the progress of the creating pair operation reaches 100%).
Copy Time on the History window shows the amount of time that has been
needed from step 1 to the completion of the creating pair operation.
Difference Management: Auto, Cylinder or Track.
CFW Data: Copy to R-VOL or Only M-VOL.
DFW to R-VOL: Required or Not required.
Check box, "Refresh the Pair Operation window after this dialog box is
closed": To refresh the Pair Operation window after closing the Detailed
Information dialog box, click the check box. By default, the check box is not
selected.
Asynchronous Parameters
• CT Group: Consistency group to which the TCzA pair is assigned.
• Error Level: Error level of the TCzA pair (Group or Volume).
• CT: Consistency time of the group (displayed only for the R-VOL).
• CT Type: Timer type (system, local, or none) for the TCzA group.