Sometimes the full backup ends up taking days.Īfter examining speeds with TheTimeMachineMechanic, I think this might have to do with small-file performance of copying to the NAS: speeds drop precipitously when dealing with many small files. Time Machine backups are extremely slow - many hours at best even for just a few GB, and almost always with a long time after the backup has actually reached its nominal 100% mark where the prefpane just shows a slowly-increasing amount backed up. The MBP is connected by wifi (I don't think that is the bottleneck but it is actually difficult to check because of the physical setup of my network). The NAS is wired to my NetGear Orbi router, correctly showing 1000 Mbps, Full duplex, MTU 1500, formatted as ext4 with SHR (Synology Hybrid Raid). I am backing up my 2019 15" MacBook Pro to a Synology DS416 NAS.
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