You can set the following Volume Retention Manager access attributes for a P-VOL or S-VOL of a ShadowImage for Mainframe pair:
- Read/Write
- Read Only
- Protect
For ShadowImage for Mainframe volumes, Read/Write access is required for the S-VOLs and for the P-VOLs for a reverse resync.
Note: If the volume emulation type is 3390-A and the Protect attribute is set for a ShadowImage for Mainframe P-VOL or S-VOL, the pair might be suspended.