Swiftech
Page 16 of 220 FirstFirst ... 6131415161718192666116 ... LastLast
Results 376 to 400 of 5491

Thread: SSD Write Endurance 25nm Vs 34nm

  1. #376
    Moderator Anvil's Avatar
    Join Date
    Apr 2008
    Location
    Norway
    Posts
    2,838
    @john

    My Agility 3 60GB does 85-86K random 4K writes, short bursts though and as usual we are talking about easily compressible data.
    -
    Hardware:

  2. #377
    Xtreme Mentor Ao1's Avatar
    Join Date
    Feb 2009
    Posts
    2,597
    Quote Originally Posted by johnw View Post
    When I read the Mushkin blurb about "unthrottled IOPS", my first interpretation was that they meant that the IOPS (i.e., 4KB high QD performance) is not throttled. I doubt they mean that they have disabled the lifetime throttle for write speed.
    It seems that the SF2xxx drives have more options in how you can throttle performance. Muskin have confirmed the following to a query I made:

    "DuraClass management functionality is still active. “Unthrottled” in this context refers to write IOPS bursting up to 90,000+ but being governed down to 20,000 after a few seconds which is typical behavior with standard firmware with SF-2281. The firmware we have on the Chronos and Chronos Deluxe drives will not have that governor activated."

    If they switch it off altogether I might get one.

  3. #378
    I am Xtreme zalbard's Avatar
    Join Date
    Dec 2008
    Location
    Germany
    Posts
    8,647
    So why are the drives being throttled then, exactly? If it's not DuraClass...
    Donate to XS forums
    Quote Originally Posted by jayhall0315 View Post
    If you are really extreme, you never let informed facts or the scientific method hold you back from your journey to the wrong answer.

  4. #379
    Banned
    Join Date
    Jan 2010
    Location
    Las Vegas
    Posts
    936
    Quote Originally Posted by Anvil View Post
    @john
    My Agility 3 60GB does 85-86K random 4K writes, short bursts though and as usual we are talking about easily compressible data.
    As I wrote, "I doubt the Mushkin can achieve 90,000 IOPS unless you feed it highly compressible data".

  5. #380
    Banned
    Join Date
    Jan 2010
    Location
    Las Vegas
    Posts
    936
    Quote Originally Posted by Ao1 View Post
    It seems that the SF2xxx drives have more options in how you can throttle performance. Muskin have confirmed the following to a query I made:

    "DuraClass management functionality is still active. “Unthrottled” in this context refers to write IOPS bursting up to 90,000+ but being governed down to 20,000 after a few seconds which is typical behavior with standard firmware with SF-2281. The firmware we have on the Chronos and Chronos Deluxe drives will not have that governor activated."
    So I guessed correctly!

  6. #381
    Banned
    Join Date
    Jan 2010
    Location
    Las Vegas
    Posts
    936
    Quote Originally Posted by zalbard View Post
    So why are the drives being throttled then, exactly? If it's not DuraClass...
    Sandforce throttles the IOPS on any of their drives that do not specify something like "high IOPS". I assume Sandforce charges OCZ et al. a little extra to disable the IOPS throttling on certain SSDs.

  7. #382
    Moderator Anvil's Avatar
    Join Date
    Apr 2008
    Location
    Norway
    Posts
    2,838
    64.23TB Host writes
    MWI 64

    No other changes.
    -
    Hardware:

  8. #383
    Moderator Anvil's Avatar
    Join Date
    Apr 2008
    Location
    Norway
    Posts
    2,838
    65.32TB Host writes
    MWI 63

    updated chart
    -
    Hardware:

  9. #384
    Xtreme Mentor Ao1's Avatar
    Join Date
    Feb 2009
    Posts
    2,597
    An update on my V2. I left it idling with no data on it after a secure erase. I then ran a series of iometer based benchmarks. The advantage of the benchmark is that I can incrementally increase the size of the test file from 1GB to 12GB.

    I ran each benchmark run sequentially, starting with 0 fill for the first run. All following runs were done with non compressible.

    In total 30GB of non compressible data & 1GB of 0 fill.

    After this barrage I let Anvil's Endurance app run. Within 2.91 hours or 383.17Gb the drive was throttled down to 6.71MB/s.

    So, it seems that even a small amount of idle time will enable performance to get back, but if you sustain the writes you end up back being throttled.

    Good news in a way. If I leave the drive to idle for a week or so and don't write excessively I should not experience any slowdowns.

    That's the end of the V2 in this thread
    Attached Images Attached Images

  10. #385
    Banned
    Join Date
    Jan 2010
    Location
    Las Vegas
    Posts
    936
    Quote Originally Posted by Ao1 View Post
    Within 2.91 hours or 383.17Gb the drive was throttled down to 6.71MB/s.
    6.71 MB/s comes to:

    403 MB/minute
    24.2 GB/hour
    580 GB/day
    4.06 TB/week
    17.6 TB/month
    212 TB/year
    635 TB in 3 years
    1.06 PB in 5 years

    In P/E cycles, assuming 40GiB of flash to distribute writes over, no WA:

    13.5 per day
    94.5 per week
    410 per month
    4900 per year
    14800 in 3 years
    24700 in 5 years

    If the throttling algorithm is indeed a hard 6.71MB/s lifetime limit line that the controller does not allow the SSD to cross (although I wonder about the granularity....1 second? less? 1 hour?), then if your SSD is in a throttled state, you should be able to "revive" it at a rate of 24.2 GB per hour of powered-on idle time. So if you had a benchmark that wrote 20GB of data, if you just left the SSD idle for an hour before the benchmark, it should measure unthrottled performance. Depending on granularity, and whether the algorithm really works the way I think (a lifetime write line that cannot be crossed).

  11. #386
    Xtreme Addict Brahmzy's Avatar
    Join Date
    May 2006
    Posts
    1,315
    So do Mushkin's new SF2xxx unthrottled drives still come with a 3 year warranty? Anybody know?

    If they do, then I think the other acts need to follow suit and offer the same. While I believe I've never experienced a throttle with my SF2xxx SSDs (and maybe RAID0 lessens the chances) it'd still be nice to see this throttling bit be a consumer choice.
    MAIN: 4770K 4.6 | Max VI Hero | 16GB 2400/C10 | H110 | 2 GTX670 FTW SLi | 2 840 Pro 256 R0 | SB Z | 750D | AX1200 | 305T | 8.1x64
    HTPC: 4670K 4.4 | Max VI Gene | 8GB 2133/C9 | NH-L9I | HD6450 | 840 Pro 128 | 2TB Red | GD05 | SSR-550RM | 70" | 8.1x64
    MEDIA: 4670K 4.4 | Gryphon | 8GB 1866/C9 | VX Black | HD4600 | 840 Pro 128 | 4 F4 HD204UI R5 | 550D | SSR-550RM | 245BW | 8.1x64

  12. #387
    Xtreme Mentor Ao1's Avatar
    Join Date
    Feb 2009
    Posts
    2,597
    It seems that formula might not be too far off. Here is an AS SSD after an hour or so idle. (Time between this post and the last).

    (This really is the last post here on the V2 )
    Attached Images Attached Images

  13. #388
    Banned
    Join Date
    Jan 2010
    Location
    Las Vegas
    Posts
    936
    Quote Originally Posted by Brahmzy View Post
    So do Mushkin's new SF2xxx unthrottled drives still come with a 3 year warranty? Anybody know?

    If they do, then I think the other acts need to follow suit and offer the same. While I believe I've never experienced a throttle with my SF2xxx SSDs (and maybe RAID0 lessens the chances) it'd still be nice to see this throttling bit be a consumer choice.
    You seem to have misinterpreted what Mushkin meant. They were talking about IOPS throttling (none). The lifetime write throttle will still be present, I think.

  14. #389
    Moderator Anvil's Avatar
    Join Date
    Apr 2008
    Location
    Norway
    Posts
    2,838
    67TB Host writes
    MWI 63

    67TB_HW.PNG

    edit:

    At 67.01TB MWI changed to 62
    Last edited by Anvil; 06-10-2011 at 12:51 AM.
    -
    Hardware:

  15. #390
    Moderator Anvil's Avatar
    Join Date
    Apr 2008
    Location
    Norway
    Posts
    2,838
    69.88TB Host writes
    MWI 61

    updated chart
    -
    Hardware:

  16. #391
    SLC One_Hertz's Avatar
    Join Date
    Oct 2004
    Location
    Ottawa, Canada
    Posts
    2,953
    92.2tb. 53%.

  17. #392
    Moderator Anvil's Avatar
    Join Date
    Apr 2008
    Location
    Norway
    Posts
    2,838
    So, not long before you reach 3x rated endurance

    The daily break (5-10minutes, including manual TRIM) helps a bit but there is no competition vs the 320 Series.
    -
    Hardware:

  18. #393
    Moderator Anvil's Avatar
    Join Date
    Apr 2008
    Location
    Norway
    Posts
    2,838
    72.79TB Host writes
    MWI 59

    updated chart
    -
    Hardware:

  19. #394
    SLC One_Hertz's Avatar
    Join Date
    Oct 2004
    Location
    Ottawa, Canada
    Posts
    2,953
    97tb. 50%.

  20. #395
    Xtreme Member dr_sharp's Avatar
    Join Date
    Nov 2004
    Posts
    235
    Interested to see final results.
    | Intel 2500K @ 5GHz | Noctua NH-D14 | Asus P67 Sabertooth | Samsung 2x4GB DDR3 @ 2133 MHz | Crucial M4 256GB | Asus GTX 770 OC | OCZ Fatal1ty 750W | Qnix QX2710

    History: AXP-2400M, AXP-2500M, Core2 E6600 - all minimum 50% overclock

  21. #396
    Moderator Anvil's Avatar
    Join Date
    Apr 2008
    Location
    Norway
    Posts
    2,838
    75.69TB Host writes
    MWI 58

    close to 10GB of random writes last 24 hours.
    -
    Hardware:

  22. #397
    Xtreme Enthusiast chuchnit's Avatar
    Join Date
    Jul 2008
    Location
    Prestonsburg, KY
    Posts
    547
    If you do a fresh format, how much available space does windows say you have?


  23. #398
    Xtreme Mentor Ao1's Avatar
    Join Date
    Feb 2009
    Posts
    2,597
    So it look like the added random data is not having a noticable impact. Still near perfect linear wear and writing speeds.Untitled.png

  24. #399
    SLC One_Hertz's Avatar
    Join Date
    Oct 2004
    Location
    Ottawa, Canada
    Posts
    2,953
    99TB. 49% as of this morning. It sure is taking a long time to kill this thing. I still don't believe there is any way it will last close to 1PB.

    100TB is 50+gb per day for 5 years. Kind of funny how many people still do things like putting page files and browser cache on their HDD to minimize writes to the SSD...

  25. #400
    Uber Raid King Computurd's Avatar
    Join Date
    Aug 2009
    Location
    Wichita, Ks
    Posts
    3,881
    yes this has definitely changed my perception of how to treat my own ssds. these are probably a bit tougher than the ol vertex gen1 i still use, but really theyve been in raid-0 with 8 disks forever, so im sure they have tons of life left in them!
    "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!

Page 16 of 220 FirstFirst ... 6131415161718192666116 ... 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
  •