HP XP Business Copy Software - Manual (Page 98)

98 ShadowImage for the XP1024/XP128/XP12000/XP10000/SVS 200
When the TSO command (FCESTABL command) is executed, only the extents specified by the EXTENTS
parameter are copied from the S--VOL to the T-VOL. For example, the following figure shows an example of
copying Dataset 2 only. If the EXTENTS parameter is not specified, the entire source volume is copied to
the T-VOL.
Figure 45 Copying Specified Dataset by Specifying EXTENTS Parameter Using TSO (FCESTABL) Command
To copy one or more dataset using the TSO (FCESTABL) command:
1. Check the VTOC list to confirm VTOC (including INDEX VTOC) and the address (cylinder number and
header number) of the dataset(s) that you want to copy.
2. Vary the T-VOL offline.
3. Execute the FCESTABL command. You must specify the following items by the EXTENTS parameter. If
you access a dataset that is not specified by the EXTENTS parameter, the operation cannot be
guaranteed.
• Dataset(s) to be copied. If you want to copy multiple datasets, you must specify the extents of all of
the desired datasets.
• VTOC address (Cylinder 0, header 0).
• VTOC.
Table 41 PPRC TSO command parameters
Command Parameter Description
FCESTABL SDEVN Source device number.
TDEVN Target device number.
MODE COPY = Data is copied in the background. Normally, the relationship ends
automatically after all of the data has been copied.
NOCOPY = Data is not copied in the background. It is necessary to issue
FCWITHDR command to delete the relationship specified with NOCOPY option.
Before ShadowImage - FlashCopy read/write processing actually starts, all of the
data in an accessed track of the S-VOL is copied to the T-VOL when one of the
following data access occurs:
1. Write data access to the extents of the S-VOL.
2. Write data access to the extents of the T-VOL.
3. Read data access to the extents of T-VOL.
The timing of ShadowImage - FlashCopy data copying is different from IBM
FlashCopy. IBM FlashCopy copies data when data in either the source or T-VOL is
updated.
ONLINTGT YES = The path group is not checked.NO = The path group is checked.
EXTENTS Extents specify the range of copy by CCHH. Up to five extents can be specified.
FCWITHDR SDEVN Source device number.
TDEVN Target device number.
FCQUERY DEVN Device number.