GAD pair and UR pair interoperability for UR environmental migration using GAD

Global Active Device for VSP One Block
Version
10.5.x
File Size
25537 KB
Audience
anonymous
Part Number
MK-23VSP1B011-11
ft:lastEdition
2026-06-23

The following table shows GAD pair operations and whether they can be performed (Yes or No) with the listed UR pair status. The possibilities to perform a GAD pair operation depend on the status and the attribute of the UR pair that shares each volume of the P-VOL and the S-VOL used by the GAD pair.

UR pair status Attribute of the target UR pair GAD pair operations
Create pairs2 Split pairs Suspend pairs Resychronize pairs Delete pairs
P-VOL specified S-VOL specified P-VOL specified S-VOL specified P-VOL specified S-VOL specified
P1 S1 P1 S1 P1 S1 P1 S1 P1 S1 P1 S1 P1 S1
SMPL - No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
COPY P-VOL No No Yes Yes Yes Yes No No No No Yes No No Yes
S-VOL No No - - - - No - - No Yes - - Yes
PAIR P-VOL Yes No Yes Yes Yes Yes Yes No No Yes Yes No No Yes
S-VOL No No - - - - No - - No Yes - - Yes
PSUS P-VOL Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes No No Yes
PSUE P-VOL Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes No No Yes
S-VOL No No - - - - No - - No Yes - - Yes
SSUS S-VOL No No - - - - No - - No Yes - - Yes
SSWS S-VOL No No - - - - No - - No Yes - - Yes
HOLD P-VOL No No - - - - - - - - - - - -
S-VOL No No - - - - - - - - - - - -
HLDE P-VOL No No - - - - - - - - - - - -
S-VOL No No - - - - - - - - - - - -
Legend:

Yes: GAD pair operations can be performed.

No: GAD pair operations cannot be performed.

- (hyphen): Impossible

Note:
  1. P: Whether GAD pair operations can be performed depending on the status of a UR pair that uses GAD P-VOL

    S: Whether GAD pair operations can be performed depending on the status of a UR pair that uses GAD S-VOL

    The GAD pair operation is complete correctly only when the GAD pair operation can be performed for both the GAD P-VOL and the GAD S-VOL.

  2. The table shows whether GAD pair operations can be performed when the source UR pair uses the GAD P-VOL. When creating a GAD pair, the volume used by a UR pair cannot be specified as the GAD S-VOL.

The following table shows UR pair operations and whether they can be performed (Yes or No) with the listed GAD pair status.

GAD pair status I/O mode Attribute of the target GAD pair1 UR pair operations
Create pairs2 Split pairs Suspend pairs Resynchronize pairs Delete pairs
P-VOL specified S-VOL specified3 P-VOL specified S-VOL specified
INIT/COPY Mirror (RL) P-VOL No Yes - No No4 Yes
Block S-VOL No - - - - Yes
COPY Mirror (RL) P-VOL No Yes - No No4 Yes
Block S-VOL No - - - - Yes
PAIR Mirror (RL) P-VOL No Yes - Yes No4 Yes
S-VOL Yes Yes - Yes No4 Yes
PSUS Local P-VOL No Yes Yes Yes Yes Yes
Block P-VOL No Yes - No No4 Yes
PSUE Local P-VOL No Yes Yes Yes Yes Yes
Block P-VOL No Yes - No No4 Yes
SSUS Block S-VOL No Yes - No No4 Yes
SSWS Local S-VOL No Yes Yes Yes Yes Yes
Legend:

Yes: UR pair operations can be performed.

No: UR pair operations cannot be performed.

- (hyphen): Impossible

Note:
  1. Shows the attributes of GAD pair that uses the UR P-VOL or UR S-VOL to be operated.
  2. UR environmental migration by using GAD does not support the sharing volumes with a 3DC configuration. Therefore, the pair for delta resync cannot be created. In addition, during the UR environmental migration by using GAD, the UR pair can be created only when the volume used by GAD is specified as the UR P-VOL.
  3. Shows whether the pair operations can be performed when sharing the UR S-VOL and the GAD volume. The possibilities of GAD pair operations when sharing the UR P-VOL and the GAD volume are the same as those shown in the column of “Split pairs by specifying P-VOL”
  4. The combinations are not possible when sharing the UR S-VOL and the GAD volume.