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

Using TrueCopy for z/OS GUI 4-11
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
Snapshot Function
The TrueCopy for z/OS snapshot function writes the user-selected TCz pair
status information to a text file on the SVP. The status information reported in
this file is determined by the selections on the Display Filter dialog box. You
can use this function to verify completion of your TCz operations. Note: You
can use the snapshot function only while the client file access is enabled.
When the client file access is not enabled, the Export button (a button for
snapshot function) is not displayed on the Pair Operation window. For the
further information of the client file access settings, please refer to the Storage
Navigator User's Guide. Table 4-2 describes the Snapshot function. Figure 4-4
shows an example of a TCz snapshot file.
Table 4-2 Snapshot Function
Data
format
Text file. Please refer to the example shown in Figure 4-4.
Target data
The TrueCopy for z/OS pairs to be reported are determined by the selections on the Display Filter dialog
box.
Termination
When Subsystem or LDKC is selected in the tree, you can stop the process by clicking the Cancel button
in the dialog box displayed during the execution of the Snapshot function.
Initialization Each time the Export command is clicked, the previous status data is deleted and the new data is written.
Note: If "#" is added to the end of number for LDEV on the primary site like
00:00:3F#, the LDEV that the LDEV number indicates is an external volume.
For details on an external volume, please refer to the Universal Volume
Manager User's Guide.
<Pair status at 05/10/2002 20:22:12>
Vol Status Sub S/N SSID Vol Type Fence Diff CTG EL Prio Sync CLPR
00:00:00 Simplex : : 00:CLPR0
00:00:01 Duplex 12345 0001 00:1F:1E Sync(M) Data Cylinder 032 100 01:CLPR1
00:00:02 Suspend GRP 12345 0001 00:1F:1D Asyn(R) Never Cylinder 0C GRP 032 050 02:CLPR2
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14)
(1) LDEV number (6) LDEV number of other CU (11) Error level
(2) Status of the pair (7) Pair mode (12) Copy priority
(3) Suspend sub status (8) Fence Level
(4) Other CU S/N (9) Differential data setting
(5) Other CU SSID (10) Consistency group number
(13) Pairing progress (%)
(14) CLPR number and CLPR name
Figure 4-4 Example of TrueCopy for z/OS Snapshot File
To create and export (download) a TrueCopy for z/OS snapshot file:
1. After completing the desired TrueCopy for z/OS operations, open the Display
Filter dialog box, select the desired options, and then close the Display Filter
dialog box.