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Thread: SSD Write Endurance 25nm Vs 34nm

  1. #1426
    Admin Vapor's Avatar
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    Just 2.25TiB (after static data, etc) into the test, Kingston V+100's WA is already up to an apparent 4.17x

    For reference, after 8.59TiB host writes and with more precise measurement, the Samsung 470 only had an apparent WA of 3.53x...and it ended up at 5.11x.

    The M225->Vertex Turbo also had its WA initially climb then stabilize. Basically, wouldn't be surprised to see the V+100's WA go even higher then stabilize over the next few days.

    (it is entirely possible my normal method of deriving PE cycles from MWI depletion is also not applicable here)

    Current expected MWI Exhaustion is just 74.3TiB host writes, 1276 normalized (64GB) writes, and 11.4 write days.

    Preliminarily, it looks like we may have a drive similar to the Samsung 470

  2. #1427
    Moderator Anvil's Avatar
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    The WD ended up being a total failure (in this regard) it works just fine for normal tasks.

    The latest session ended up failing due to the SF2 controller issue, the Endurance app was still running , everything else had shut down, I was unable to save the screenshot though.

    So, 1 hour of writes ended up in an average throughput of 21MiB/s.
    The drive is capable of about ~140MB/s during normal large block IO.

    This is a screenshot from one of the other sessions, it is just not suitable for this test. (I wasn't planning on using it, just checking the performance)

    WDC SSC-D0064SC-2500_64GB_endurance-20110823-1931.png

    So, compared to this B.A.T's Kingston is doing just fine.
    Last edited by Anvil; 08-23-2011 at 11:29 AM.
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  3. #1428
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    m4 update:

    362.0994 TiB
    1191 hours
    Avg speed 90.60 MiB/s.
    AD gone from 147 to 145.
    P/E 6345.
    MD5 OK.
    Still no reallocated sectors
    M4-CT064 M4SSD2 SATA Disk Device_64GB_1GB-20110823-2118.PNG

    Kingston V+100:

    5.9450 TiB
    23 hours
    Avg speed 78.50 MiB/s.
    AD gone from 194 to 184.
    P/E ?
    MD5 OK.

    KINGSTON SVP100S264G SATA Disk Device_64GB_1GB-20110823-2117.PNG
    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

  4. #1429
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    256.29TB Host writes
    Reallocated sectors 6
    MD5 OK

    Everything is normal.
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  5. #1430
    NooB MOD [XC] Oj101's Avatar
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    I have another question, would a drive ever reach a stage where data starts to become corrupt?
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    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

  6. #1431
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    Quote Originally Posted by [XC] Oj101 View Post
    I have another question, would a drive ever reach a stage where data starts to become corrupt?
    NAND/SSD makers have said that even if a drive fails due to NAND failure, it should still be readable for a year. Nobody has had any read failures yet (that's what the MD5 checks are about), and even the Samsung 470 that had NAND failure was still readable, so we have no evidence of any data corruption yet.



    C300 Update

    248.648TiB host writes, 16 MWI, 4202 raw wear indicator, 2048/1 reallocations, 62.8MiB/sec (finally back to normal-ish), MD5 OK


    SF-1200 nLTT Update (from much earlier today, been awhile since MWI dropped)

    118.125TiB host writes, 80.5TiB NAND writes, 62 MWI, 1288 raw wear (equiv), wear range delta 3, 56.25MiB/sec, MD5 OK

    I had my endurance test system offline last night--was expecting a power outage this morning for electrical repairs for my neighborhood and didn't want to have another cropped C300 log--so have only had ~12 hours of endurance test progress since last update.

  7. #1432
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    Wondering if the Samsung 470 will really retain the data for 1 year. Maybe it will retain it for even more than one year ?

  8. #1433
    Xtreme Addict bluestang's Avatar
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    M225->Vertex Turbo 64GB Update:

    136.14 TiB
    518.2 hours
    MWI 30 (drops by 1 for every 50 raw wear)
    3500 Raw Wear
    110.72 MB/s avg for the last 16.11 hours (on W7 x64)
    MD5 OK
    C4-Erase Failure Block Count(Realloc Sectors) at 2 (Bank 6/Block 2406; Bank 3/Block 3925)

    CDI-M225-OCZ-VERTEX-TURBO-08.24.2011.PNG
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  9. #1434
    Moderator Anvil's Avatar
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    258.91TB Host writes
    Reallocated sectors 6
    MD5 OK

    34.0MiB/s on avg (~27.5 hours)
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  10. #1435
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    Wonder how the C300 will end up performing compared to the Intel or the Samsung. The no-LTT Sandforce is also very interesting as well.

  11. #1436
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    339TB. 69 reallocations. MD5 OK. My SSD is actually speeding up by about 0.1mb/s per day. It is 0.4mb/s faster now than it was late last week.

  12. #1437
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    m4 update:

    369.8099 TiB
    1215 hours
    Avg speed 90.34 MiB/s.
    AD gone from 145 to 140.
    P/E 6481.
    MD5 OK.
    Still no reallocated sectors
    M4-CT064 M4SSD2 SATA Disk Device_64GB_1GB-20110824-2213.PNG


    Kingston V+100:

    12.5365 TiB
    48 hours
    Avg speed 77.15 MiB/s.
    AD gone from 184 to 179.
    P/E ?
    MD5 OK.

    KINGSTON SVP100S264G SATA Disk Device_64GB_1GB-20110824-2214.PNG
    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

  13. #1438
    NooB MOD [XC] Oj101's Avatar
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    Why's the Kingston so slow? It's rated at 145MB/s. If applicable, surely LTT wouldn't kick in at only 12.5TB?

    Seems it's actually 180MB/s on writes
    Last edited by [XC] Oj101; 08-24-2011 at 12:33 PM.
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    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

  14. #1439
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    The Kingston doesn't have LTT because it uses a Toshiba controller, not Sandforce.
    It might be a combination of things like a aggressive GC and little time for the controller to shuffle data.
    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

  15. #1440
    NooB MOD [XC] Oj101's Avatar
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    Quote Originally Posted by B.A.T View Post
    The Kingston doesn't have LTT because it uses a Toshiba controller, not Sandforce.
    I thought as much, hence saying "if applicable." Would GC really hurt so badly?
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    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

  16. #1441
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    Well, it sure looks like it. I don't have any better explanations, maybe some of the others in the thread can help with some understanding.
    1: AMD FX-8150-Sabertooth 990FX-8GB Corsair XMS3-C300 256GB-Gainward GTX 570-HX-750
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  17. #1442
    Moderator Anvil's Avatar
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    Keep in mind that the 180MB/s is based on a rather large block size, the endurance test is writing a mix of block sizes and >50% is less than 128KB in size.

    It looks like the controller struggles with this mix.
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  18. #1443
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    Kingston V+100's apparent WA gets weirder...after being exactly the same twice in a row (4.166666x), it's down to 2.61x overall. At this point I'd guess the SMART attribute that's declining isn't MWI as we know it (i.e., not a linear scaling--relative to P/E cycle--counter) and therefore my WA calculations are basically useless

    It was at 92 (equiv) after 6TiB and is at 89.5 (equiv) after 12.59TiB...so yeah, definitely not linear and seemingly not related to P/E cycles (unless recent WA has gone from ~4.17x to ~1.19x, which I suppose is possible).

  19. #1444
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    There are a few more attributes that could start changing, nothing like a P/E counter though. (unless there is some trick to interpreting AD)
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  20. #1445
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    C300 Update

    254.5TiB host writes, 14 MWI, 4300 raw wear indicator, 2048/1 reallocations, 63.0MiB/sec (going back up again...), MD5 OK


    SF-1200 nLTT Update (from much earlier today--I seem to be out of sync with the MWI movement)

    123.188TiB host writes, 84.47TiB NAND writes, 60 MWI, wear range delta 3, 1351.5 raw wear (equiv), 56.15MiB/sec, MD5 OK

  21. #1446
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    The M4 is going quite far already but I bet the C300 will go even further because of 34nm NAND and same controller type.

  22. #1447
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    260.63TB Host writes
    Reallocated sectors : 6
    MD5 OK

    33.36MiB/s on avg (~43 hours)
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  23. #1448
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    m4 update:

    375.405 TiB
    1234 hours
    Avg speed 90.34 MiB/s.
    AD gone from 140 to 137.
    P/E 6581.
    MD5 OK.
    Still no reallocated sectors
    M4-CT064 M4SSD2 SATA Disk Device_64GB_1GB-20110825-1635.PNG


    Kingston V+100:

    17.3295 TiB
    66 hours
    Avg speed 76.59 MiB/s.
    AD gone from 179 to 177.
    P/E ?
    MD5 OK.

    KINGSTON SVP100S264G SATA Disk Device_64GB_1GB-20110825-1636.PNG
    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

  24. #1449
    Xtreme Addict bluestang's Avatar
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    Quote Originally Posted by bulanula View Post
    The M4 is going quite far already but I bet the C300 will go even further because of 34nm NAND and same controller type.
    Well, in that case the M225 will go even farther with it's 51nm NAND (10k P/E).
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  25. #1450
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    SMART attribute AD is definitely not MWI-as-we-know it. If it were, WA would have been .65x over the past ~4.8TiB. This Kingston V+100 is a weird one

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