ZFS remote replication (resilvering task with rr continuous option)

Hi, All.

We have suggested the ZFSSA to Cu who used ST5320 NAS with file replication.
In case of ST5320, ASYNC replication same as ZFSSA.
It keep the mirror buffer space and when the data updated on source, the changed block was mirrored to target immediately.

We think that it is same as ZFSSA's remote replication with continuous option.

We have a test the ZFSSA replication with continuous option. (not schedule).

BUT there was some issue for resilvering ETA scenarios test.

** Our test scenario system environment. **
Source ZFSSA machine is 7320. Target ZFSSA is 7410. (I did coverted the source and target system done by reverse replication).