HP StorageWorks XP Remote Web Console Software User Manual

Page 145

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Table 75 Differences of Relationship Releasing Process Between IBM FlashCopy and Version 2

(continued)

Version 2

IBM FlashCopy

Compared Item

CAUTION:

If one of the following

operations has been performed, the
creation of relationships may fail:

A scratch operation

Datasets deletion

Volume initialization

Therefore, if any of these operations
have been performed, do either of the
following:

Use the FCWITHDR command to
withdraw the relationship.

Wait until the background copy
operation finishes and the
relationship disappears.

area that is included in the extent
is withdrawn.

When only the central part of the
copy target for the relationship is
included in the specified extent,
only the area that is included is
withdrawn. The remaining area of
the relationship is divided up.

The command withdraws the copy
targets for relationships existing within

The command withdraws the copy
targets for pairs existing within the

FCWITHDR

command

(DDSW = NO, XTNTLST parameter
specified)

the extents specified as the target.
When the copy target for the

extents specified as the target,
provided that:

relationship is only partly included in

When the copy target for the
relationship is only partly included the extent specified as the target, the

command does not withdraw the
relationship.

in the extent specified as the target,
only the area that is included in the
extent is withdrawn.

CAUTION:

If one of the following

operations has been performed,
creation of the relationships may fail:

A scratch operation

Datasets deletion

Volume initialization

Therefore, if any of these operations
have been performed, do either of the
following:

Use the FCWITHDR command to
withdraw the relationship.

Wait until the background copy
operation finishes and the
relationship disappears.

When only the central part of the
copy target for the relationship is
included in the extent specified as
the target, only the area that is
included is withdrawn. The
remaining area of the relationship
is divided up.

Not supported. The command will finish
abnormally. Relationships will not be
deleted.

The command will finish normally.
Relationships will not be deleted.

REMOVEFCPY

(ICKDSF CONTROL command)

Part of the volume relationship will be
withdrawn.

The operation when you establish a
dataset relationship by using the

When you specify the source volume
for a volume relationship as the copy

DFSMSdss

command, and specify the

target, the entire volume relationship
will be withdrawn.

source or target volume for a volume
relationship as the copy target.

When you specify the target volume
for a volume relationship as the copy
target, the volume relationship will
be withdrawn.

CAUTION:

When only a part of the

relationship that is the copy target is
included in the specified extent as the
copy target, the volume relationship will
not be withdrawn.

Comparison of Relationship Releasing Process

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