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Old 09-16-2019, 05:46 AM
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JFreak JFreak is offline
Join Date: Jan 2003
Location: Tampere, Finland
Posts: 17,096
Default Re: Macbook Pro backup before repair

If it's 100MB/s read and write on both ends, backing up half a terabyte takes roughly hour and a half.
If both drives are 1000MB/s fast SSD's then about ten minutes.
If the performance is from 90's (10MB/s) then it will take +12hrs

You tell me how long it will take once you have that speed test installed. By default it tests your boot drive, but you can set it up to run the test on your external. TB3 has little to do with it. All we can say it will not be a bottleneck. It is the performance of your storage that counts.
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