New HDD "Caution" Reallocated Sectors

Discussion in 'SSDs & Data Storage' started by unrlmth, Aug 11, 2012.

  1. unrlmth

    unrlmth Limp Gawd

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    Last edited: Aug 11, 2012
  2. drescherjm

    drescherjm [H]ardForum Junkie

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    Isn't that a Seagate. Although I guess Samsung and Seagate are the same company now. Anyways the 3 yellow items look pretty bad to me if these are real values. Seagate at times has masked their raw values although I have never seen it for either of these.
     
  3. unrlmth

    unrlmth Limp Gawd

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    Yes it is, I have no idea why I wrote Samsung, lol.

    I guess I'll just keep an eye on it for now. Everything is backed up so it's not a big deal if it fails. And just got my last RMA back from Seagate yesterday. . .:rolleyes:
     
  4. gokuz

    gokuz Limp Gawd

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    Wow the horror stories with seagate... I'm surprised they are even in business...i was checking the refurbished section on one of my online shops ,95 % of hdds are seagate,on amazon u get almost 50% negative reviews on seagate hdds,just look at this page of the forum at leats 2,3 seagate hdd problems..... How can a company wich RMA's so many hdd be the leading manufacturer of hdds?
     
  5. dustNbone

    dustNbone [H]ard|Gawd

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    Well in part I'd guess its precisely because they are the leading manufacturer of drives that they'd have the most RMAs. NewEgg reviews aren't a great indicator either as people are far more likely to report a problem than they are the absence of problems, people are just bitchy that way.

    I'm thinking refurbs are mainly drives that were returned with little or nothing wrong with them by users who misdiagnosed, as they've been opened and used, they cannot be sold as new items.

    Dustin
     
  6. mwroobel

    mwroobel [H]ardness Supreme

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    If it is less than 30 days (some are 14 though), most resellers will let you return a defective drive through them as DOA rather than get a refurb through Seagate.
     
  7. Jorona

    Jorona 2[H]4U

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    1018 pending sectors. RMA it. Its bad.
     
  8. madrebel

    madrebel Gawd

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    here is the firmware logs from a 3TB seagate constellation es.2 i recently bought. first, here is the shitty part.

    Code:
       Write errors corrected with possible delays: 0
       Total Write errors: 0
       Write errors corrected: 0
       Times correction algorithm processed (on Writes): 0
       Bytes processed (on Writes): 384705481728
       Unrecovered errors (on Writes): 0
       [b][u]Read errors corrected without substantial delay: 2203415051[/u][/b]
       Read errors corrected with possible delays: 0
       Total Read errors: 0
       Read errors corrected: 2203415051
       Times correction algorithm processed (on Reads): 0
       Bytes processed (on Reads): 1606352062464
       Unrecovered errors (on Reads): 0
       Verify errors corrected without substantial delay: 4740
       Verify errors corrected with possible delays: 0
       Total Verify errors: 0
       Verify errors corrected: 4740
       Times correction algorithm processed (on Verifys): 0
       Bytes processed (on Verifys): 0
       Unrecovered errors (on Verifys): 0
    
    You see all those zeros? those zeros say the OS hasn't registered any errors. You see the underlined part, that is what is happening in the firmware logs. the background scanning is noticing and repairing errors. here is what that looks like.

    Code:
    0         17833              cd7   OK      recovered via in-place rewrite  Recovered error Recovered data with ECC - data rewritten
          1         17993        15d506081   OK      recovered via in-place rewrite  Recovered error Recovered data with ECC - data rewritten
          2         18035        15d506083   OK      recovered via in-place rewrite  Recovered error Recovered data with ECC - data rewritten
          3         18104        15d50607e   OK      recovered via in-place rewrite  Recovered error Recovered data with ECC - data rewritten
    
    when i ran that report i had 260 of those in the firmware logs. however, that is ok .... (no it isnt) because
    this drive shipped with 457,145 known defects! you will notice though that i haven't had a single grown defect, meaning, since the drive has been powered on and data written to it i havent had a single error.

    the shitty thing is i know this drive will be failing at some point. when? no idea. however, even with these logs i can't RMA it because it hasn't failed and seagate knew about a boat load of defects when they shipped it and for some reason it still passed their quality controls.

    however, that isn't even the whole story because, this is another drive i bought at the same time (196 in total)
    Code:
    Total grown defects:                 0
       Total Primary (factory) defects:     500366
    that drive's firmware logs report ZERO errors yet that drive shipped with more known defects. if you're wondering, almost every drive ships with known defects, it is fairly rare for a drive to not have known defects. think of it like CPU binning and or cpu errata. all of my drives have factory defects with quite a few in the 200k+ range.

    point is errors aren't necessarily bad. here the important thing is grown defects. if you have a drive that has grown defects that drive is in bad shape.

    the toolset i use to get at the firmware info is called santools. it is reasonably priced if you're in the enterprise space but beyond what most people would spend for home use. if you're planning on getting say nexenta or rolling your own reasonably sized ZFS based storage i HIGHLY recommend santools. i was fairly shocked at what was actually going on with my drives, well worth the reasonable cost of the software.
     
  9. Jorona

    Jorona 2[H]4U

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    Yes, but pending means they're grown defects. The don't ship drives with pending sectors.

    RMA it.
     
  10. madrebel

    madrebel Gawd

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    yeah i know, i was just kinda taken back by what I saw when i ran the initial report. its nice to see at the firmware level what the drives are actually logging.

    thot i would share and plug the toolset :).