Sharing Thin Image Advanced volumes with global-active device

Thin Image Advanced User Guide

Version
9.8.6
Audience
anonymous
Part Number
MK-98RD9033-00

You can use a Thin Image Advanced P-VOL as a global-active device (GAD) P-VOL or S-VOL.

Important: When you create or manage a Thin Image Advanced pair that is shared with a GAD pair, use actual LDEV IDs. You cannot use the virtual LDEV IDs of GAD volumes to manage Thin Image Advanced pairs.

The following tables list the relationship between Thin Image Advanced tasks and GAD pair status.

Note: If you share GAD volumes with Thin Image Advanced volumes, stop I/O to a volume before storing snapshot data. Snapshot consistency cannot be guaranteed if you store snapshot data without stopping I/O to the volume.


The following table lists the Thin Image Advanced tasks you can perform when the P-VOL is shared with a GAD P-VOL.

GAD status I/O mode Thin Image Advanced task
Create pair Split pair Resync pair Restore pair Release pair Assign S-VOL Release assignment of S-VOL
COPY Mirror (RL) Yes Yes Yes No Yes Yes Yes
PAIR Mirror (RL) Yes Yes Yes No Yes Yes Yes
PSUS Local Yes Yes Yes Yes Yes Yes Yes
Block Yes Yes Yes No Yes Yes Yes
PSUE Local Yes Yes Yes Yes Yes Yes Yes
Block Yes Yes Yes No Yes Yes Yes

The following table lists the GAD tasks you can perform when the Thin Image Advanced P-VOL is shared with a GAD P-VOL.



GAD task Thin Image Advanced pair status
COPY/COPY (PD) PAIR PSUP/PSUS (SP) PSUS COPY/COPY (RS) RCP/COPY (RS-R) CPYP/COPY (SP) SMPP*/SMPL (PD) PSUE
Create pair Yes Yes Yes Yes Yes Yes No Yes Yes
Suspend pair Specifying P-VOL Yes Yes Yes Yes Yes Yes N/A Yes Yes
Specifying S-VOL Yes Yes Yes Yes Yes Yes N/A Yes Yes
Release pair Specifying P-VOL Yes Yes Yes Yes Yes Yes Yes Yes Yes
Specifying S-VOL No No No No No No No No No
Deleting forcibly Yes Yes Yes Yes Yes Yes Yes Yes Yes
Resync pair Specifying P-VOL Yes Yes Yes Yes Yes No Yes Yes Yes
Specifying S-VOL Yes Yes No Yes Yes No Yes Yes Yes
* The display for when the -key detail option is specified for the raidcom get snapshot command


The following table lists the Thin Image Advanced tasks you can perform when the P-VOL is shared with a GAD S-VOL.

GAD status I/O mode Thin Image Advanced task
Create pair Resync pair Split pair Restore pair Release pair Assign S-VOL Release assignment of S-VOL
COPY Mirror (RL) No No No No Yes Yes Yes
PAIR Mirror (RL) Yes Yes Yes No Yes Yes Yes
SSUS Block Yes Yes Yes No Yes Yes Yes
PSUE Block Yes Yes Yes No Yes Yes Yes
SSWS Local Yes Yes Yes No Yes Yes Yes

The following table lists the GAD tasks you can perform when the Thin Image Advanced P-VOL is shared with a GAD S-VOL.



GAD task Thin Image Advanced pair status
COPY/COPY (PD) PAIR PSUP/PSUS (SP) PSUS COPY/COPY (RS) RCP/COPY (RS-R) CPYP/COPY (SP) SMPP*/SMPL (PD) PSUE
Create pair No No No No No No No No No
Suspend pair Specifying P-VOL Yes Yes Yes Yes Yes N/A Yes Yes Yes
Specifying S-VOL Yes Yes Yes Yes Yes N/A Yes Yes Yes
Release pair Specifying P-VOL No No No No No No No No No
Specifying S-VOL Yes Yes Yes Yes Yes Yes Yes Yes Yes
Deleting forcibly Yes Yes Yes Yes Yes Yes Yes Yes Yes
Resync pair Specifying P-VOL Yes Yes No Yes Yes No Yes Yes Yes
Specifying S-VOL Yes Yes Yes Yes Yes No Yes Yes Yes
* The display for when the -key detail option is specified for the raidcom get snapshot command.