You have deployed volume-level replication with NetApp Synchronous SnapMirrorreplication technology.

In Sync mode, the application I/O fails if the write to the secondary storage is not completed, thereby ensuring that the primary and secondary storage are identical.

In StrictSync mode, the application is allowed to continue writing to the primary storage if the write to the secondary storage is not completed.

In Sync mode, the application is allowed to continue writing to the primary storage if the write to the secondary storage is not completed.

In StrictSync mode, the application I/O fails if the write to the secondary storage is not completed, thereby ensuring that the primary and secondary storage are identical.