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    rMPR SSD overprovisioning

    Discussion in 'Apple and Mac OS X' started by NearlyBasic, Oct 22, 2015.

  1. NearlyBasic

    NearlyBasic Newbie

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    I tried searching, but didn't find anything on maintaining SSD health for the new macbooks. I've got a 2015 rMBP and I was wondering if there were any preventative measures to help maintain the life span of the computers SSD. I used to over provision my SSDs in my desktop, but does that still aid at all with the Macbooks? And why does disk utility not show a S.M.A.R.T. status for the partition or does it only show it for the physical drive?

    Thanks.

    [​IMG]
     
  2. saturnotaku

    saturnotaku Notebook Nobel Laureate

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    Just don't fill it above about 95%-98% of its capacity, and you'll be fine. Unless it has some sort of defect from the factory, or you're writing hundreds upon hundreds of gigabytes per day, the SSD will be the last part of concern on that machine.
     
  3. NearlyBasic

    NearlyBasic Newbie

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    Perfect, thanks a lot.
     
  4. LOUSYGREATWALLGM

    LOUSYGREATWALLGM Notebook Deity

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    Any suggestion for users who do photo editing? I used to edit photos on a SSD and the write were too high (Photoshop CS4)
     
  5. KCETech1

    KCETech1 Notebook Prophet

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    I just swap out my SSD's in them after 6 months due to wear leveling, you can eat a drive fast by pumping that many read/write cycles through. I wish I could install some of the new enterprise grade units to negate most of the wearing on cells. otherwise Keep it to 75% used at most and wait for the size of drive to start shrinking once the built in over provisioning wears out.
     
  6. saturnotaku

    saturnotaku Notebook Nobel Laureate

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    Do what KCETech1 says and keep the drive less than 75% capacity. I would also strongly consider using an external hard drive or SSD for your scratch disk.
     
  7. KCETech1

    KCETech1 Notebook Prophet

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    External will not work for a scratch disk well, the latency and bottlenecks are a nightmare and cause kernel panicks far far too often. you can use an external for final output renders but that's about it nowadays ( 10.9/10.10 )
     
  8. saturnotaku

    saturnotaku Notebook Nobel Laureate

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    Even over Thunderbolt? I could see the issue with USB, but Thunderbolt is virtually (not identically, obviously) an extension of the built-in storage. Thunderbolt SSDs are pricey, but the cost could be justified for productivity.
     
  9. KCETech1

    KCETech1 Notebook Prophet

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    LOL, it works on Thunderbolt if its the TB3 ports in my Zbook Studio or 7510. I can not for the life of me get it to be stable enough on any of the 5 15" rMBP's that Apple has sent me one after another the last 2 months trying to use one as a scratch and final render output for a large and time critical project in FCPX and Premier Pro I had dumped in my lap. in the end I wound up doing it all in an OSX VM. but agreed to try and help see if we can find the issue or a fix with a few editors with same issues. especially where 4K or non Quicktime codecs are used. TB on OSX seems to be flakey as they come on very large file sizes ( 4GB+ ) or where you are doing a continual data stream to a container file.

    USB has actually been most stable, however its a bottleneck for a scratch disk
     
  10. saturnotaku

    saturnotaku Notebook Nobel Laureate

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    That makes sense. We haven't had any troubles like that around here, but we aren't working with any huge files like that. A few hundreds megs to a gigabyte at most.
     
  11. Raidriar

    Raidriar ლ(ಠ益ಠლ)

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    Sounds like somebody needs a Hackintosh
     
  12. KCETech1

    KCETech1 Notebook Prophet

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    someone has 2 hackintoshes, but a VM on a Zbook 17 Gen3 saved my arse in this case.