Ho to know and calculate delta changes on MirrorView after Sync

"It depends" is the only right answer. If you have apps that don't write much, there's not much deltas and if your database is hammering the disks like crazy, they're somewhat (understatement) larger.

Hi Glen,

Thanks for your assistance.
I have seen at Properties of Mirror and look at the Secondary Images, yes there is time last started and last ended also duration time. I also can see how much capacity per LUN synchronized. But I can't see how much actually delta changes (?MB) has been synchronized since the last synchronized. Because MirrorView not everytime do full sync, my understanding it's will full sync when first initialized. So, how I know ?MB delta changes has been synchronized at the second, third or four sync at specific time (I have set interval on 3 hours for the next sync). Does MirrorView have capability to monitor it? How to do it? Pls. your next assistance.

If you have SAN Copy installed on the array, you can use the navicli command sancopy -info -reserved to get the reserved SAN Copy session information. One of the items returned for each session is "Number of blocks to copy". This will work only if the SANCopy enabler is installed.

If running without the SAN Copy enabler, you can an take SPCollect off the primary array and extract the RTP zip file. Look at the file SPx_mvacli_info.txt, one of the things listed is "Blocks to copy Next", which is the value (in blocks) that you're looking for.