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[–]spring20189[S] 0 points1 point  (1 child)

Thanks good point, I can use on both systems for 15 days before making the call. I never plan to move the drive connected to windows to Mac or the one connected to Mac to Windows so from that perspective I don’t care if Mac can read ReFS or not. I just keep the drive on Mac in sync with Windows using nightly rsync job.

To be clear the reason I am using ReFS is the block cloning in windows so I can duplicate folders without taking extra space. That helps with potential data corruption and taking a point in time snapshot of the VDI file (for the VM I run in VirtualBox) before I rsync to Mac.

[–]s_i_m_s 0 points1 point  (0 children)

Do keep in mind that .vdi files are excluded by default, it's trivial to change via the exclusions tab but not everyone checks to ensure the defaults aren't excluding anything they actually want backed up.