I have a system with 12T usage, CentOS 6, raid6, xfs, email system

I need to rsync the data to standby server, now it takes around 6 hours to finish the task

I found that the volume of really copied file is not too much, around 100k files, but the latency seems to scanning the changes of folders

What can I do to improve the performance of rsync? Target is within 15 minutes, is it possible?

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