Work out the time taken in seconds, and calculate (file size in MB)/(seconds to transfer) to give the result in MB/s.

Watch for the moment that copying is complete, and the Finder’s progress window disappears. As the seconds approach 55, drag the test file over a window on your shared folder on your NAS, releasing the file as the seconds reach 00. Then click the Write Single… button at the top left, and choose where you want the file to be saved. If you wish, you can create a file of an exact size using Stibium: set the file size on the top line to 5 or 10 GB, and the contents to 0x41. Don’t use a bundle like an app unless it has been archive or compressed into a single file. To do that, create or borrow a single file of that size. This test measures the time that it takes to copy one file of 5-10 GB to the NAS, and copy it back again. Previous versions of macOS may not achieve good performance, particularly when using SMB. Your Mac should be running Monterey, preferably version 12.1. Time Machine backups already configured from the Mac to the NAS.Įnsure that your NAS operating system is fully up to date, and check its SMB and AFP configurations carefully.The Time Machine Mechanic (T2M2) for the final test.wired 1 Gb or better ethernet connections between your Mac and the NAS.This article proposes a series of simple tests which should help you gain clearer insights into any problem and eliminate causes one at a time. Because there are so many systems and standards involved in backing up to network storage, it’s valuable to test simple functions before trying to tackle the whole series. Many of you report problems backing up to NAS systems, particularly with backups taking forever or throwing errors.

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