A log volume for the SnapLock for SnapVault feature must be a SnapLock volume. The SnapLock volume can be a traditional volume or a flexible volume. All SnapVault log entries are created in the log volume. This is a system-wide option; therefore, a SnapVault operation on any SnapLock volume is logged to the log volume. However, you need to set this option for SnapVault transfers to SnapLock volumes to succeed.
You must create a log volume for the SnapLock for SnapVault feature before starting an initial (level 0) SnapVault transfer.