Case 1: tdevn specified, ddsw = no – HP XP P9500 Storage User Manual

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Table 46 Results from FCWITHDR command (continued)

Results

Parameter

Setting

The command will do nothing and end normally.

Without any relevant relationships to
withdraw

Unspecified

The FCWITHDR command will do nothing and end
normally.

When the existing relationships do not
fall within the range specified by the
XTNTLST or XXTNTLST parameter

Unspecified

There are several effective combination patterns of the parameters of the FCWITHDR command.
All combinations, other than those listed in the following table, will result in rejection of this
command. The table shows the parameters of FCWITHDR command and the applicable
combinations.

Table 47 Combinations of parameters of the FCWITHDR command (Compatible FlashCopy)

Parameters

Combination

ACTION

XTNTLSTor XXTNTLST

DDSW

DEVN

TDEVN

SDEVN

Case

Target

Source

Not specified

Specified

Not specified

Case 1

Not specified

Specified

Not specified

Specified

Not specified

Case 2

Not specified

Specified

Case 3

Not specified

Specified

Not specified

Specified

Case 4

Not specified

YES

Not specified

Specified or not
specified

Specified

Case 5

Not specified

Specified

YES

Not specified

Specified or not
specified

Specified

Case 6

THAW

Not specified

Specified

Not specified

Case 7

The information specified by the XTNTLST or XXTNTLST parameter is supported only when the
following conditions are fully met:

•

The information specified by the XTNTLST parameter must be for both the source and target.
If the information specified by the XTNTLST parameter is only for one of the two, the copy
operation results in an error.

•

The size of the specified copy source and target extents must be the same.

•

The relationship must be established with INCREMENTAL = NO or must be established without
INCREMENTAL.

WARNING!

When the relationships are withdrawn by the FCWITHDR command executed

with the DDSW parameter set to NO or without setting the DDSW parameter, the data integrity
of the T-VOL cannot be guaranteed.

Case 1: TDEVN Specified, DDSW = NO

All the relationships established with the copy target extents existing in the device specified by
TDEVN are withdrawn. The relationships established with the copy source extents existing in the
specified volume are not withdrawn.

The following is an example of the command description for Case 1. This example requests the
withdrawal of all the relationships established with the copy target extents existing in the device
numbered 4203.

FCWITHDR TDEVN(X'4203')

Releasing Compatible FlashCopy relationships