SSD Lifespan

Discussion in 'MacBook Pro' started by Barney63, Jan 26, 2014.

  1. Barney63 macrumors 6502a

    Barney63

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    #1
    Does anybody know the expected lifespan of the SM and SD 256GB SSDs?
    Say with about 170GB of data and home use.

    Barney
     
  2. koban4max macrumors 68000

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    Aug 23, 2011
    #2
    6 months...just get samsung. evo.
     
  3. Bear macrumors G3

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    #3
    What do you mean by 170GB? Is that how full you expect the disk to be? If that's the case, I'd recommend 512GB if you're planning on keeping the system more than a year or 2. Remember you need to keep 10 to 20% of your system disk free for best performance.
     
  4. Barney63 thread starter macrumors 6502a

    Barney63

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  5. DeltaMac macrumors 604

    DeltaMac

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    #5
    Exactly…
    In a year or two, you will have more!
    The extra space will be nice to have now, and later, you will likely use it.
     
  6. alphaod macrumors Core

    alphaod

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    #6
    Like 20 years is not more. Actually probably a lot more than that!
     
  7. Barney63 thread starter macrumors 6502a

    Barney63

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    #7
    I also have 2TB of external storage so the size of the SSD isn't critical.
    The point of the thread was the how long the drive will physically last ie the number of read/write cycles.
    I had seen some reports somewhere suggesting that some would only last a couple of years.

    Barney
     
  8. alphaod macrumors Core

    alphaod

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    #8
    I don't think you should worry. It will last a long time.
     
  9. yjchua95 macrumors 604

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    #9
    Dumbest statement I've ever seen.

    The SM0256F is basically a Samsung XP941, utilizing MLC NAND like the 840 Pro.

    So an Evo will not last longer than a Pro/XP941, because the Evo uses the less durable TLC NAND.

    http://www.anandtech.com/show/6459/samsung-ssd-840-testing-the-endurance-of-tlc-nand

    Scroll down to the SSD Lifespan Estimation table, and you'll see that the Evo (TLC) lasts significantly less than the Pro (MLC).

    My iMac, on light usage (web surfing, iTunes, posting in the MR forums and a short 10 minute session on Windows 8.1 in VMware) has written 22GB already (2h 30m since boot).
     
  10. koban4max macrumors 68000

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    #10
    Depending how you use it...sure 6 months could happen.
     
  11. Barney63 thread starter macrumors 6502a

    Barney63

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    #11
    I did say home use.

    Barney
     
  12. koban4max macrumors 68000

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    Aug 23, 2011
    #12
    there's different meaning of "home use." Home use could be extensive.
     
  13. Freyqq macrumors 68040

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    #13
    It will probably last longer than the life of the other parts of the computer. The read/write cycles for an 840 pro are very high.
     
  14. ionjohn macrumors 65816

    ionjohn

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    #15
    It will last a very long time. Then when it stops working, SSDs will be much cheaper.
     
  15. Fishrrman macrumors G4

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    Feb 20, 2009
    #16
    ionjohn says it exactly right in the post above.

    Just use the SSD and keep it properly backed up.

    It will last as long as it lasts.

    At some point, it will fail -- as all spinning hard drives eventually fail. When that happens, buy a replacement (they're getting cheaper all the time), restore from your backup, and change drives (assuming the drive can be swapped out).
     
  16. UBS28, Jan 27, 2014
    Last edited: Jan 27, 2014

    UBS28 macrumors 6502a

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    #17
    I would go for the EVO since you can get a higher capacity SSD which counters the durability of the 840 Pro. If you buy the 1 TB 840 EVO, you get amazing storage with amazing reliability.

    A small capacity SSD with TLC is asking for trouble of course. But Samsung got great warranty based on my experience :p
     
  17. ha1o2surfer macrumors 6502

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    #18
  18. imorton macrumors 6502

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    Aug 21, 2010
    #19
    I see that my "home use" writes about 40Gig a day, so that works out to @ 14 Terrabytes a year.

    I don't know how much "write lifespan" a 250Gb 840 EVO has, hopefully someone can reply, and we'll be able to get a reasonable idea how long a 40Gig write a day will last?

    Thanks for any replies.
     
  19. Barney63 thread starter macrumors 6502a

    Barney63

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    #20
    The table shows expectancy at 50GB/day to be 15 years for a 250GB drive.
    http://www.anandtech.com/show/7173/...w-120gb-250gb-500gb-750gb-1tb-models-tested/3

    Barney
     
  20. simonsi macrumors 601

    simonsi

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    #21

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