Page 56 of 220 FirstFirst ... 6465354555657585966106156 ... LastLast
Results 1,376 to 1,400 of 5495

Thread: SSD Write Endurance 25nm Vs 34nm

  1. #1376
    Banned
    Join Date
    Jan 2010
    Location
    Las Vegas
    Posts
    936
    I found this dialog up when I checked this afternoon:

    error_dialog_2011-08-20_1511.png

    Here is how the ASU stat screen looked at that time:

    SAMSUNG 470 Series SSD_64GB_1GB-20110820-1513.png

    As I found the system above, the Samsung drive was completely unresponsive. I could not even read the SMART parameters or view any files with Windows explorer. I tried rebooting, and the BIOS did not even see the SSD. Then I powered down for a minute, and when I powered back up the BIOS could see the Samsung, and Windows could also see it. I was able to read the SMART parameters:

    smart_20110820_1524.png

    I was able to verify the MD5 checksum for the ~40GB static data file, and it was fine. Also, ASU never detected any MD5 errors. So it seems the data has been, and continues to be intact on the SSD.

    I tried running AS-SSD and it actually managed to write a little to the SSD, but then it locked up. I killed it with Task Manager, but the SSD was unresponsive to anything again, not even reading SMART parms.

    as-ssd_2011-08-20_1542.png

    I tried to shutdown but windows locked up at "shutting down" message and I had to cut the power. When I powered back up, the Samsung was again responding to reads and SMART parm queries, and it could even write a little bit but very slowly and most writes were failing I think:

    SAMSUNG 470 Series SSD_64GB_1GB-20110820-1556.png

    Note that the first ASU screenshot shows 478.037 TiB, but the second one shows 477.212 TiB. I think the first one is correct. The second one is lower because I don't think ASU was able to save the last bit of writes when it quit the first time, so the second time when it loaded the writes it was missing some of them.

    So that 478.037 TiB comes to 525.607 TB (I prefer TB to TiB). That is equal to 8212 times writing the 64GB capacity of the drive. Which is equivalent to writing the entire 64GB capacity of the drive, every day, for 22 years. Or to writing 287GB every day for 5 years.
    Last edited by johnw; 08-20-2011 at 03:45 PM.

  2. #1377
    Banned
    Join Date
    Jan 2010
    Location
    Las Vegas
    Posts
    936
    Anyone have any ideas on anything else I should try with the Samsung 470? Keep in mind that Windows seems to be unstable when the Samsung is connected now when any program tries to write to the Samsung -- freezes and lockups. But it seems fine as long as there are only read requests sent to the Samsung.

    My plan is to keep the drive unpowered now, and plug it in periodically (every few weeks or once a month) and try to verify the MD5 checksum on the 40GB static data file.

  3. #1378
    Admin Vapor's Avatar
    Join Date
    Feb 2005
    Location
    Ann Arbor, MI
    Posts
    13,107
    I wonder if the freezer trick works at all for SSDs

    Shocked the death was so sudden too...and before SA178 was depleted. It's all extremely interesting

    (of note, I also had the ASU log for my C300 'cropped' when I cut power)

    EDIT: guess I'll do a special edition of the charts tonight (wasn't planning on it) in honor of the first successful SSD death

    EDIT2: also of note, the Intel 320 40GB with 'worse' 25nm NAND has done more normalized writes than the Samsung 470 did in its lifetime. Normalized writes scale ~1.09:1 with P/E cycles, assuming 1.00x WA. This is some minor evidence supporting the apparent WA of ~5.11x of the 470. In addition, Intel 320 reallocations are over a magnitude lower (and started much, much earlier). Of course, the Intel 320 also has parity, the NAND isn't the same, the sample size is very small, etc., so this is hardly hard evidence of the >5x WA, but it is some soft evidence.
    Last edited by Vapor; 08-20-2011 at 04:23 PM. Reason: edit2

  4. #1379
    Uber Raid King Computurd's Avatar
    Join Date
    Aug 2009
    Location
    Wichita, Ks
    Posts
    3,887
    amazing, good show! your efforts and coin are appreciated, she was a good SSD, one that we will all remember fondly!

    and that would be the one with the worst WA (is that still a valid comment? what would the WA work out to be in the end?)
    if it is 5 then others could be in for a lonnnngggg haul

    EDIT: seen ^^ post above...dont know how i missed that. wow!
    Last edited by Computurd; 08-20-2011 at 05:25 PM.
    "Lurking" Since 1977


    Jesus Saves, God Backs-Up
    *I come to the news section to ban people, not read complaints.*-[XC]Gomeler
    Don't believe Squish, his hardware does control him!

  5. #1380
    I am Xtreme lowfat's Avatar
    Join Date
    Oct 2005
    Location
    Grande Prairie, AB, CAN
    Posts
    6,122
    Nice to see some good action finally.

  6. #1381
    Xtreme Member
    Join Date
    May 2009
    Posts
    201
    Yeah baby! Some action finally! Samsung has proved to be a worthy SSD! I am extremely pleased with the fact that you can read the file and verify checksum. So, it works the way SSDs were advertised to work. Of course, 500+TB of data written to 64GB, that's a lot for me! And written at a pretty good speed of 100+MB/s. Hats off!

  7. #1382
    Xtreme Addict bluestang's Avatar
    Join Date
    Nov 2008
    Location
    NE Ohio, USA
    Posts
    1,405
    @johnw...thanks for your hard work
    Can't wait to see ho is next
    Home PC -- Cruncher #1
    GA-P67A-UD4-B3 BIOS F8 modded, i7-2600k (L051B138) @ 4.5 GHz, 1.260v full load, HT Enabled, Corsair H70 exhausted @ 1600rpm
    Samsung Green 2x4GB @2133 C10, Gigabyte 7950 @1200/1250, Vertex 4 128GB, 2x3TB WD Red, F4EG 2TB, BR Burner, Win7 Ult x64, CM690, HX750

    Work PC -- Cruncher #2 ... Crucial M225 64GB SSD Donated to Endurance Testing (Died at 968 TB of writes...no that is not a typo!)
    GA-EP45T-UD3LR BIOS F10 modded, Q6600 G0 VID 1.212 (L731B536), 3.6 GHz 9x400 @ 1.312v full load, Zerotherm Zen FZ120
    OCZ 2x2GB DDR3-1600MHz C7, Sapphire 6970 @955/1475, Vertex 2 60GB, 2x500GB Hitachi R1, Win7 Ent x64, Centurion 590, XFX PRO650W

    Music System
    SB Server->SB Touch w/Android Tablet as a remote->S/PDIF->Kenwood Sovereign VR-4090B->JBL Studio Series Floorstanding Speakers

    BTC: 1K91nTPceMcap66AhDBgMx8t87TomgAABH LTC: LNqbVqebzpMwuZHq95qRTfP73kR2FRZWS4

  8. #1383
    Banned
    Join Date
    Jan 2010
    Location
    Las Vegas
    Posts
    936
    Quote Originally Posted by devsk View Post
    Samsung has proved to be a worthy SSD!
    Yup, it has earned its retirement. It will get a place in a comfy drawer, and still be invited out for a little entertainment once a month!

  9. #1384
    Admin Vapor's Avatar
    Join Date
    Feb 2005
    Location
    Ann Arbor, MI
    Posts
    13,107
    Charts Updated

    All bar charts are sorted by their respective equivalent of Writes So Far.

    Host Writes So Far

    Aug20HostBar.png

    Aug20HostLine.png


    Normalized Writes So Far
    The SSDs are not all the same size, these charts normalize for available NAND capacity.

    Aug20NormBar.png

    Aug20NormLine.png


    Write Days So Far
    Not all SSDs write at the same speed, these charts factor out write speeds and look at endurance as a function of time.

    Aug20WDBar.png

    Aug20WDLine.png


    Host Writes vs. NAND Writes and Write Amplication
    Based on reported or calculated NAND cycles from wear SMART values divided by total writes.

    Aug20WrLin.png

    Aug20WrLog.png

    Aug20WrtAmp.png

  10. #1385
    Admin Vapor's Avatar
    Join Date
    Feb 2005
    Location
    Ann Arbor, MI
    Posts
    13,107
    The scary thing for the rest of us is if all our drives have the same lifetime : MWI endurance ratio.

    478TiB : 59.5TiB is roughly an 8:1 ratio

    No other drive is even at a 2:1 ratio...and neither of the oldest (Intel) drives are past 5:3 ratios yet.

  11. #1386
    Banned
    Join Date
    Jan 2010
    Location
    Las Vegas
    Posts
    936
    Quote Originally Posted by Vapor View Post
    The scary thing for the rest of us is if all our drives have the same lifetime : MWI endurance ratio.
    Looks like you may have a very long graphing job ahead of you! Maybe you will be done before 2013!

  12. #1387
    Admin Vapor's Avatar
    Join Date
    Feb 2005
    Location
    Ann Arbor, MI
    Posts
    13,107
    Quote Originally Posted by johnw View Post
    Looks like you may have a very long graphing job ahead of you! Maybe you will be done before 2013!
    Hah, poor Anvil too if the X25-V goes for 8:1....that's 432 days from now.

  13. #1388
    SynbiosVyse
    Guest
    05: 0
    B1: 24
    E7: 81%
    E9: 34560
    EA/F1: 51456
    F2: 64

    173.16 hours
    58.66 MB/s avg
    MD5 Ok

    Stopping and switching to 0-Fill.

  14. #1389
    Xtreme Enthusiast DragoonXX's Avatar
    Join Date
    Mar 2008
    Location
    Alberta Canada
    Posts
    631
    I feel in some sense that http://www.youtube.com/watch?v=19yjo...eature=related is suitable for this situation
    (taps)
    Current System:
    eVGA 680i SLi "A2" P30 BIOS
    intel Core 2 Quad Q6600 (currently at stock)
    OCZ ReaperX 4GB DDR2 1000 (running at DDR2 800 Speeds with cas4)
    320GB Seagate 7200.10
    XFX 8800GT XXX 512MB (stock clocks)
    auzentech X-Fi Prelude
    PC Power and Cooling Silencer 750 Quad Copper
    Win XP Pro

  15. #1390
    Xtreme Mentor Ao1's Avatar
    Join Date
    Feb 2009
    Posts
    2,597
    Quote Originally Posted by SynbiosVyse View Post
    ....Stopping and switching to 0-Fill.
    Hi SynbiosVyse, this is a retail drive? If it is then it would appear that not all SF drives are set for life time throttle after all, which is contrary to claims made by OCZ.

    If you switch to 0 fill you will not see a drop in write speeds if LTT kicks in. With 100% incompressible you will see the full impact of LTT; if it is activated.

  16. #1391
    Xtreme Mentor Ao1's Avatar
    Join Date
    Feb 2009
    Posts
    2,597
    Quote Originally Posted by johnw View Post
    Yup, it has earned its retirement. It will get a place in a comfy drawer, and still be invited out for a little entertainment once a month!
    Great job John, thanks for all the hard work. This is the first reported case I have seen of P/E cycles running out. It will be interesting to see how long the data can be retained.

    EDIT:
    Quote Originally Posted by johnw View Post
    Any firmware updates during that time?
    I don't think so, but I can't exclude that.
    Last edited by Ao1; 08-21-2011 at 01:02 AM.

  17. #1392
    Xtreme Enthusiast
    Join Date
    Jun 2011
    Location
    Norway
    Posts
    609
    R.I.P Samsung 470. You did a good job.

    I'll be home again tomorrow afternoon and bring you more update from the m4.
    And finally the Kingston v+ 100 has arrived and will be put into the test after I figure out how to run anvil app on 2 drives at the same time. Any ideas how to do that?
    1: AMD FX-8150-Sabertooth 990FX-8GB Corsair XMS3-C300 256GB-Gainward GTX 570-HX-750
    2: Phenom II X6 1100T-Asus M4A89TD Pro/usb3-8GB Corsair Dominator-Gainward GTX 460SE/-X25-V 40GB-(Crucial m4 64GB /Intel X25-M G1 80GB/X25-E 64GB/Mtron 7025/Vertex 1 donated to endurance testing)
    3: Asus U31JG - X25-M G2 160GB

  18. #1393
    NooB MOD [XC] Oj101's Avatar
    Join Date
    Jan 2006
    Location
    South Africa
    Posts
    5,785
    I wish I had a spare SSD to donate to the cause
    Xtreme SUPERCOMPUTER
    Nov 1 - Nov 8 Join Now!


    Quote Originally Posted by Jowy Atreides View Post
    Intel is about to get athlon'd
    Athlon64 3700+ KACAE 0605APAW @ 3455MHz 314x11 1.92v/Vapochill || Core 2 Duo E8500 Q807 @ 6060MHz 638x9.5 1.95v LN2 @ -120'c || Athlon64 FX-55 CABCE 0516WPMW @ 3916MHz 261x15 1.802v/LN2 @ -40c || DFI LP UT CFX3200-DR || DFI LP UT NF4 SLI-DR || DFI LP UT NF4 Ultra D || Sapphire X1950XT || 2x256MB Kingston HyperX BH-5 @ 290MHz 2-2-2-5 3.94v || 2x256MB G.Skill TCCD @ 350MHz 3-4-4-8 3.1v || 2x256MB Kingston HyperX BH-5 @ 294MHz 2-2-2-5 3.94v

  19. #1394
    Moderator Anvil's Avatar
    Join Date
    Apr 2008
    Location
    Norway
    Posts
    2,838
    Quote Originally Posted by johnw View Post
    Anyone have any ideas on anything else I should try with the Samsung 470? Keep in mind that Windows seems to be unstable when the Samsung is connected now when any program tries to write to the Samsung -- freezes and lockups. But it seems fine as long as there are only read requests sent to the Samsung.

    My plan is to keep the drive unpowered now, and plug it in periodically (every few weeks or once a month) and try to verify the MD5 checksum on the 40GB static data file.
    Not without sacrificing the 40GB static file, I think you should use the file for periodic tests though.
    So, let it rest, it has performed admirably well.
    My Samsungs have been promoted and are now running as boot drives

    Quote Originally Posted by Vapor View Post
    I wonder if the freezer trick works at all for SSDs

    Shocked the death was so sudden too...and before SA178 was depleted. It's all extremely interesting

    (of note, I also had the ASU log for my C300 'cropped' when I cut power)
    I highly doubt the freeze trick will work , would be cool if it did though.
    (as long as the data is readable it doesn't really matter vs HDDs)

    The log can be recalculated I'm planning on making it an option.

    Quote Originally Posted by Vapor View Post
    Hah, poor Anvil too if the X25-V goes for 8:1....that's 432 days from now.
    , I'm prepared for that outcome, it might wear out my pc though.

    I haven't decided on what drive to test next, was thinking on one with a somewhat larger capacity (80-120GB)

    I'm awaiting what happens to SymbiosVyse's drive as I've got a hunch that they might not be using throttling.
    It should have started to make an impact by now if it had that option enabled.
    Last edited by Anvil; 08-21-2011 at 07:47 AM.
    -
    Hardware:

  20. #1395
    Admin Vapor's Avatar
    Join Date
    Feb 2005
    Location
    Ann Arbor, MI
    Posts
    13,107
    Quote Originally Posted by SynbiosVyse View Post
    Stopping and switching to 0-Fill.
    Why are you switching to 0-fill?

    As Ao1 said, that setting (8%, too) will mask any throttling and NAND write speeds will likely drop, delaying the onset of LTT. Though, each day that passes makes it seem more and more like LTT isn't present at all.

    0-fill is also completely unrealistic as a workload, but that's a separate issue.

    Quote Originally Posted by B.A.T View Post
    And finally the Kingston v+ 100 has arrived and will be put into the test after I figure out how to run anvil app on 2 drives at the same time. Any ideas how to do that?
    Nothing special needed. Just put the .exe on both drives and run them both...no need to change filename or anything like that

  21. #1396
    Xtreme Enthusiast
    Join Date
    Jun 2011
    Location
    Norway
    Posts
    609
    Thank you

    I'll just do that then.
    1: AMD FX-8150-Sabertooth 990FX-8GB Corsair XMS3-C300 256GB-Gainward GTX 570-HX-750
    2: Phenom II X6 1100T-Asus M4A89TD Pro/usb3-8GB Corsair Dominator-Gainward GTX 460SE/-X25-V 40GB-(Crucial m4 64GB /Intel X25-M G1 80GB/X25-E 64GB/Mtron 7025/Vertex 1 donated to endurance testing)
    3: Asus U31JG - X25-M G2 160GB

  22. #1397
    Moderator Anvil's Avatar
    Join Date
    Apr 2008
    Location
    Norway
    Posts
    2,838
    250.38TB Host writes
    Reallocated sectors : 6
    MD5 OK
    -
    Hardware:

  23. #1398
    Admin Vapor's Avatar
    Join Date
    Feb 2005
    Location
    Ann Arbor, MI
    Posts
    13,107
    C300 Update

    240.143TiB host writes, 19 MWI, 4055 raw wear indicator, 2048/1 reallocations, 63.05MiB/sec (still creeping upward...), MD5 OK


    SF-1200 nLTT Update

    112.938TiB host writes, 76.469TiB NAND writes, 64 MWI, 1223.5 raw wear (equiv), wear range delta 3 (still), 56.5MiB/sec (still creeping upward...), MD5 OK

  24. #1399
    Moderator Anvil's Avatar
    Join Date
    Apr 2008
    Location
    Norway
    Posts
    2,838
    252.40TB Host writes
    Reallocated sectors : 6
    MD5 OK

    34.78MiB/s on avg (~17 hours)
    -
    Hardware:

  25. #1400
    Xtreme Addict bluestang's Avatar
    Join Date
    Nov 2008
    Location
    NE Ohio, USA
    Posts
    1,405
    M225->Vertex Turbo 64GB Update:

    124.02 TiB
    489.2 hours
    MWI 35 (drops by 1 for every 50 raw wear)
    3268 Raw Wear
    110.54 MB/s avg for the last 63.28 hours (on W7 x64)
    MD5 OK
    C4-Erase Failure Block Count(Realloc Sectors) from 1 to 2 (Bank 6/Block 2406; Bank 3/Block 3925)

    CDI-M225-OCZ-VERTEX-TURBO-08.22.2011.PNG
    Home PC -- Cruncher #1
    GA-P67A-UD4-B3 BIOS F8 modded, i7-2600k (L051B138) @ 4.5 GHz, 1.260v full load, HT Enabled, Corsair H70 exhausted @ 1600rpm
    Samsung Green 2x4GB @2133 C10, Gigabyte 7950 @1200/1250, Vertex 4 128GB, 2x3TB WD Red, F4EG 2TB, BR Burner, Win7 Ult x64, CM690, HX750

    Work PC -- Cruncher #2 ... Crucial M225 64GB SSD Donated to Endurance Testing (Died at 968 TB of writes...no that is not a typo!)
    GA-EP45T-UD3LR BIOS F10 modded, Q6600 G0 VID 1.212 (L731B536), 3.6 GHz 9x400 @ 1.312v full load, Zerotherm Zen FZ120
    OCZ 2x2GB DDR3-1600MHz C7, Sapphire 6970 @955/1475, Vertex 2 60GB, 2x500GB Hitachi R1, Win7 Ent x64, Centurion 590, XFX PRO650W

    Music System
    SB Server->SB Touch w/Android Tablet as a remote->S/PDIF->Kenwood Sovereign VR-4090B->JBL Studio Series Floorstanding Speakers

    BTC: 1K91nTPceMcap66AhDBgMx8t87TomgAABH LTC: LNqbVqebzpMwuZHq95qRTfP73kR2FRZWS4

Page 56 of 220 FirstFirst ... 6465354555657585966106156 ... LastLast

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •