Mainframe Enablers TimeFinder SnapVX and zDP 8.5 Product Guide

Determines whether the current size of the source device or the snapshot size is compared with the target device size when the LINK command is processed.

CHECK_SNAPSHOT_SIZE(YES) is useful in cases where the snapshot was created before dynamic expansion of the source device. With CHECK_SNAPSHOT_SIZE(YES), the size of the source device at snapshot creation is displayed in the SNAPSHOT SIZE (IN CYLINDERS) field of the QUERY SNAPSHOT multiline report.

CHECK_SNAPSHOT_SIZE(YES) may impact performance. If the snapshot and the source volume are expected to be the same size, use CHECK_SNAPSHOT_SIZE(NO).

The CHECK_SNAPSHOT_SIZE parameter can be specified on the GLOBAL and LINK commands. It has a matching site option, &CHKSNSZ.

Syntax

CHECK_SNAPSHOT_SIZE({Yes|No})

Options

Yes

Compare the snapshot size (cylinders).

No

(Default) Compare the current size of the source device (cylinders).