HP StorageWorks XP24000 for FlashCopy Mirroring Software User's Guide (T5240-96001, June 2007)

Compared Item IBM FlashCopy
Version 2
FCWITHDR command
(DDSW = NO,
XTNTLST parameter
specified)
The command withdraws the copy
targetsfor pairsexistingwithin
the
extents specified as the target,
provided that:
• When the
copy target for the
relationship is only partly included
in the
extent specified as the target,
only the 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extent is withdrawn.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 extent specified
as the
target, 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included is withdrawn.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 extents specified as the
target. When the copy target for the
relationship is only partly included
in the
extent specified as the target,
the command does not withdraw the
relationship.
Caution : If one of the following has
been performed, creation of the
relationships may fail:
• A
scratch operation
•
Deletion of datasets
•
Volume initialization
Therefore, if any of these have been
performed, do one of the following:
•
Use the FCWITHDR command to
withdraw the relationship.
•
Wait until the background
copy operation finishes and the
relationship disappears.
REMOVEFCPY
(ICKDSF CONTROL
command)
The command will finish normally.
Relationships will not be deleted.
Not supported. The command will
finish abnormally. Relationships will
not
be deleted.
The operation when
you establish a
dataset relationship
by using the DFSMSdss
command, and specify
the
source or target
volume for a volume
relationship as the copy
target.
Part of thevolumerelationshipwillbe
withdrawn.
• When you specify the source
volume for a volume relationship as
the copy target, the entire volume
relationship will be withdrawn.
• 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relationship will be withdrawn.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will not be withdrawn.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 Supporting Commands
IBM FlashCopy supports the ICKDSF commands, while Version 2 does not. In addition, Version 2 does
not
support the following parameters of the TSO commands:
• FC Establish c ommand
•DEVN (devno)
•SOURCE (srcid)
• TARGET (tgtid)
•OPENDVCS
•REMOTE
•SSID
• MODE (NOCOPY2COPY)
• TGTPPRIM
• INCREMENTAL
• FC Query command
108
Feature Comparison with the IBM Product