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Thread: SSD Write Endurance 25nm Vs 34nm

  1. #251
    Xtreme Mentor Ao1's Avatar
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    A secure erase and then just running the app did not work. I'll let it idle now to see what happens.

  2. #252
    Xtreme Mentor Ao1's Avatar
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    A couple of hours idle and now I'm back to normal....well actually a bit faster than normal.
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    Last edited by Ao1; 05-28-2011 at 05:03 AM.

  3. #253
    Moderator Anvil's Avatar
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    Great!

    Lets see how this develops.

    edit:
    Did you have a look at the smart values in the OCZ toolbox?
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  4. #254
    Xtreme Mentor Ao1's Avatar
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    Popped out, came back and by the 3rd loop I'm down to 6.78MB/s.

    So is this now a throttled state? Was I previously in a used state?
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  5. #255
    Moderator Anvil's Avatar
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    I'd say the speed you were getting earlier was close to normal used state, the one you've got now has to be throttled++

    I'd leave it idling until tomorrow and give it a another try, it's clearly telling "something" is up.
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  6. #256
    Xtreme Mentor Ao1's Avatar
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    Hmm, so an app like AS SSD writes directly to the device, avoiding Window's file system. In such as case would a TRIM command be issued if Window's did not register the write? (It would explain a few things if a TRIM command could not be generated).

  7. #257
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    so what is the best way to keep an ssd from degradation? 3rd party maintenance programs? im considering a 64 gb c300 but with all the things im reading im not so sure i want to get a ssd. i mean page file useage,trim,garbage collection,degradation and failure rates...i just dont really see the point..i use my pc for gaming and i think a raid setup with 6gb hdd is the way to go

  8. #258
    Xtreme Mentor Ao1's Avatar
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    Here is a comparison of a super throttled state between various levels of compression.


    The last copy of static data dropped down to 7.98MB/s
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  9. #259
    Xtreme Mentor Ao1's Avatar
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    Quote Originally Posted by pythonse View Post
    so what is the best way to keep an ssd from degradation? 3rd party maintenance programs? im considering a 64 gb c300 but with all the things im reading im not so sure i want to get a ssd. i mean page file useage,trim,garbage collection,degradation and failure rates...i just dont really see the point..i use my pc for gaming and i think a raid setup with 6gb hdd is the way to go
    The Intel drives have written 35 terrabytes of data non stop and are still going strong with no drop in speed and only ~15% wear.

  10. #260
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    Quote Originally Posted by Ao1 View Post
    Hmm, so an app like AS SSD writes directly to the device, avoiding Window's file system. In such as case would a TRIM command be issued if Window's did not register the write? (It would explain a few things if a TRIM command could not be generated).
    Why do you say that? I don't think AS-SSD "avoids" the filesystem. Otherwise, it would corrupt the filesystem by writing to LBAs that the filesystem may be using. And AS-SSD has never corrupted the filesystem on any drive I have run it on.

    I think what it does is open a file of a certain size (say, 1 GB) so that it has a range of space to play with, and then limits itself to writing only in that space. And it apparently deletes the file when it is done. I never looked in the Trash after running it to see if there is a deleted file in the trash. If there is, then TRIM would definitely work when you empty the trash.

  11. #261
    Xtreme Mentor Ao1's Avatar
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    Benchmarks generate temp files that auto delete. When that happens a TRIM command is issued.

    I'm assuming you can write at the device level based on the fact that you can read from it directly. I'm not 100% sure, which is why I asked the question. I'm even more unsure about what level the TRIM command comes from.

    It might help explain why a TRIM "hang" does not occur whilst the V2 is being benchmarked.


    EDIT - I'm going to terminate the V2 endurance test. Seems pointless if DuraClass is going to throttle the drive to make sure it lasts 5 years.
    Last edited by Ao1; 05-28-2011 at 08:12 AM.

  12. #262
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    Quote Originally Posted by Ao1 View Post
    EDIT - I'm going to terminate the V2 endurance test. Seems pointless if DuraClass is going to throttle the drive to make sure it lasts 5 years.
    Too bad. Well, at least we can see what the Intel controller will do after things really get going at about 50TB of writes etc. !

  13. #263
    Moderator Anvil's Avatar
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    A real shame about the throttling but we knew it would pop up, it's showed it's face a little later than I expected.

    updated the chart in post #1

    The Intel (Kingston) is still going strong...
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  14. #264
    I am Xtreme lowfat's Avatar
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    Quote Originally Posted by Ao1 View Post

    EDIT - I'm going to terminate the V2 endurance test. Seems pointless if DuraClass is going to throttle the drive to make sure it lasts 5 years.
    That is ridiculous. What a useless 'feature'.

  15. #265
    Xtreme Mentor Ao1's Avatar
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    Well it was expected, but I didn't think performance would drop so low.

    I was getting huge response times for uncompressible data. 87ms for a 4MB sequential xfer/ 11.37 IOPS. For writes 570ms/ 1.75 IOPS

    I don't really get why Duraclass is needed when the drive benefits from compression.

  16. #266
    Xtreme Enthusiast mbreslin's Avatar
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    Q: How many IOPS does your ssd put out?
    A: 1

    Classic.
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  17. #267
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    Quote Originally Posted by mbreslin View Post
    Q: How many IOPS does your ssd put out?
    A: 1

    Classic.
    Nice one LOL ! Seems like again HDD 1 SSD 0 !

  18. #268
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    Ao1, 30TB written in how much time?
    P5E64_Evo/QX9650, 4x X25-E SSD - gimme speed..
    Quote Originally Posted by MR_SmartAss View Post
    Lately there has been a lot of BS(Dave_Graham where are you?)

  19. #269
    Xtreme Mentor Ao1's Avatar
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    7 days exactly. EDIT: Looking at my first post within an hour of 7 days.
    Last edited by Ao1; 05-28-2011 at 02:08 PM.

  20. #270
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    43TB. 78%. I started the new software which includes some random writes 1TB ago.

  21. #271
    Xtreme Mentor Ao1's Avatar
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    It will be interesting to see if/ how much that speeds up wear.

    You started on the 16th? 13 days now?

  22. #272
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    Quote Originally Posted by Ao1 View Post
    It will be interesting to see if/ how much that speeds up wear.

    You started on the 16th? 13 days now?
    Yeah 16th.

  23. #273
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    Ao1, can I ask what program you use to generate your charts? They are nice! And thanks for this adventure! I have the Intel G2 160GB, and love it. Currently, I've written ~ 3.9 TB over six months (3287 hours) and have a MWI of 98. I download quite a bit of torrent files, so I always have my drive filling up with media files before I move them to 2TB Samsung storage drives. I wish your efforts in this would get better exposure on other sites. To my knowledge, you are the first to attempt this. Thanks!
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  24. #274
    Xtreme Mentor dengyong's Avatar
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    Quote Originally Posted by hot120 View Post
    Ao1, can I ask what program you use to generate your charts? They are nice! And thanks for this adventure! I have the Intel G2 160GB, and love it. Currently, I've written ~ 3.9 TB over six months (3287 hours) and have a MWI of 98. I download quite a bit of torrent files, so I always have my drive filling up with media files before I move them to 2TB Samsung storage drives. I wish your efforts in this would get better exposure on other sites. To my knowledge, you are the first to attempt this. Thanks!
    Why not download them directly to the storage drive ?
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  25. #275
    Uber Raid King Computurd's Avatar
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    WHOA! i didnt look for a whole day and the V2 is outta here, didnt see that coming at all. man unbelievable the lack of performance once fully throttled. now i understand why my friend says his V2 is as slow as a HDD after his long usage (bought it first week it was available)

    Q: How many IOPS does your ssd put out?
    A: 1

    Classic.
    lol that literally made me LOL until i cried

    Seems like again HDD 1 SSD 0 !
    no no no. HDD=1 SSD=1 SF=big fat 0

    for the record though guys...i have a Vertex LE in this here 24/7 rig. bought it forever ago...i have never sanitary erased it or anything. havent even changed the firmware (it is on the first version) basically i have run it maintenance free...however, it is still very very quick. it seems great to me.
    we do need to keep in perspective the parameters of the test that is being ran here, intentional hammering is very bad for that gen of SF i guess.
    Last edited by Computurd; 05-29-2011 at 07:33 PM.
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