Using z/VM FLASHCOPY ESTABLISH to establish relationships

SOURCE

Primary device number, Starting cylinder of source, Ending cylinder of source

Specifies the virtual device number (device address or mini disk number), the starting cylinder, and the ending cylinder of the copy source.

TARGET

Secondary device number, Starting cylinder of target, Ending cylinder of target

Specifies the virtual device number (device address or mini disk number), the starting cylinder, and the ending cylinder of the copy destination.

CHGRECORD

-

Establishes a relationship whose target is the entire virtual volume. If the S-VOL and the T-VOL are updated, the data that has been changed is managed as differential data.

When you specify this parameter, an Incremental Type1 relationship is established regardless whether the IBM^® host supports the Multiple Incremental FlashCopy^® function.

NOTGTWRITE

-

Write to the S-VOL is not allowed until the FLASHCOPY TGTWRITE is executed.

REVERSIBLE

-

Establishes a relationship whose target is the entire virtual volume. If the S-VOL and the T-VOL are updated, the data that has been changed on the S-VOL or T-VOL is managed as differential data, and write to the T-VOL is not allowed until the FLASHCOPY TGTWRITE command is executed.

NOCOPY

-

Does not perform the background copy when establishing the relationship.

FAILNOSPACE

-

When the T-VOL is a TSE-VOL and the pool becomes full, the state of the relationship will change to failed state. For details about failed state, see Managing failed states.

When the T-VOL is a TSE-VOL, this parameter is set by default.

NOSETARGET

-

This parameter can be set when the T-VOL is not a TSE-VOL. If this parameter is specified when the T-VOL is a TSE-VOL, creating relationships will fail.