Perhaps the smart and cheapest thing would be to replace the WD drive. My environment is quite benign so no factors such as smoke, etc. I cannot be certain that they send me a brand new drive or a refurbished drive. Western Digital has been good about replacing failed drives under warranty. Here is a blog post about how to make sense of the logs Time Machine generates, including links to utilities that simply the process:Ĭoncise Time Machine logs on macOS 10.13 High Sierra Time Machine: 1 How it Works, or Fails To Part two delves into TM's logs, which may be enlightening regarding what the software is up to. Since the OP intuits that Time Machine may be causing premature wear on his external drives, it would be helpful to learn more about the software so he can identify possible reasons for it. Here is a link to part one of a two part article about how Time Machine works, potential problems and how to address them. But if this was happening to me, I would dig deeper to see if there may be a connection. It could just be a coincidence that the OP's Time Machine drives are dying prematurely. When I work on long word processing documents I have other options for versioned backups. I can always do a manual backup if I am so inclined. I addressed the issue by scheduling a single daily backup at 6pm. I do not know whether having an internal APFS volume affects Time Machine I am relatively new to APFS and I haven't spent time learning more about it.Įven though I am retired with a greatly reduced computing workload, my TM partition still fills up very quickly. Since the target volumes are external mechanical drives, I doubt that they are formatted in APFS. Has that changed with APFS? I've never thought about it somehow I don't care as much these days as I used to, as long as things work. I agree recording changes at the file level is not the most efficient way. It can't write changes faster than the user makes them I still don't think it's heavy use in terms of sustained IOPS. If a user edits many large files, that's a lot of writing to disk. Since Time Machine does not use delta encoding, every time a change is made to a file the entire file is rewritten. Time Machine doesn't do that - I'd characterise it rather as light use. Hard use of a disk would be constant seeking and read/writes.
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