Generic USB Drive – 4 GB
Writes: 620.11 GB
Average speed: 2.71 MB/s
Write speed has increased from 2.45 MB/s to 2.71 MB/s from start to current. Seems that write speeds increase as the NAND “wears in.”
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Generic USB Drive – 4 GB
Writes: 620.11 GB
Average speed: 2.71 MB/s
Write speed has increased from 2.45 MB/s to 2.71 MB/s from start to current. Seems that write speeds increase as the NAND “wears in.”
btw 19 nm Toshiba Toggle Nands with Sandforce Controller
http://thessdreview.com/latest-buzz/...x-2012-update/
19nm toggle nands should be Toggle Mode 2.0 right? 400MT/s or these are still ver 1.0 200MT/s just like 24nm Type B T-Nands?
Assuming a WAF of 1.10, the M3P has used 2184 PE cycles. It's doing about 957.34 GiB an hour, or around 8.3 PE cycles per hour.
To date, the 830 has 1,933,004 GiB in LBA writes (8338 Wear Leveling Count). 1,933,004 / 8338 WLC = 231.83GiB per WLC. Since the LBA writes are about 12TB ahead of ASU, dividing WLC by ASU's figure equals about 230GiB/WLC. This number has been consistent throughout the first 79 days of testing. The 830 is using >4 PE cycles per hour, or 105 to 110 per day.
EDIT
I timed it, and in 7 hours the 830 used 30 PE cycles, about 4.28 an hour. Sometimes the drive is faster, sometimes slower, and I'm not sure if the slower periods are using more or less PE cycles. You really have to average it out over 7 days or so.
Todays update:
m4
1010.9994 TiB
4248 hours
Avg speed 74.56 MiB/s.
AD gone from 35 to 32
P/E 17427.
CE 26
MD5 OK.
Reallocated sectors : 00
http://www.diskusjon.no/index.php?ap...tach_id=493455
Intel X25-M G1 80GB
690.58 TiB
23558 hours
Reallocated sectors : 127 to 132
Available Reserved space: 76
MWI= 76 to 66
MD5 =OK
39.89 MiB/s on avg
http://www.diskusjon.no/index.php?ap...tach_id=493454
Intel X25-E 64GB
212.96 TiB
646-30=616 hours
Reallocated sectors : 0
Available Reserved space: 100
MWI= 98
MD5 =OK
91.17 MiB/s on avg
http://www.diskusjon.no/index.php?ap...tach_id=493456
Mtron Pro 7025 32GB
ASU write 11.0486 TiB
Host write 20,0083 TiB
Total host write 67,5438 TiB
Day 3
MWI= 99
MD5 =OK
47.08 MiB/s on avg
http://www.diskusjon.no/index.php?ap...tach_id=493457
Intel 330 120GB
147.30TB Host writes
Reallocated sectors : 05 0
Available Reserved Space : E8 100
MWI 84
[F1] Total LBAs Written 4826712
[F2] Total LBAs Read 30800 // not much use in this one
[F9] Total NAND Writes 106325GB
POH 381
MD5 OK
122.86MiB/s on avg (~37 hours)
--
Kingston SSDNow 40GB (X25-V)
1017.66TB Host writes
Reallocated sectors : 05 46
Available Reserved Space : E8 99
POH 9108
MD5 OK
33.50MiB/s on avg (~37 hours)
--------------------------------------------
Plextor M3P 128GB Day 10
266,094.42 GiB
259.86 TiB
272.63 MB/s Avg, down from 273.49 MB/s in the other rig
274 Hours
Rellocated Event Count 0
--------------------------------------------
Samsung 830 256GB Day 80
1,941,575.25 GiB
1,896.07 TiB
299.47 MB/s Average
1920 Hours
8431 Wear Leveling Count
MWI 1
7/0 Erase/Program Fail
Used Reserved Block Count: 14/28672 sectors
-----------------------
The 830 is only a couple days (~48 hours) from 2,000,000 GiB in ASU, but LBA writes are 13TB ahead. It should hit 2PiB next week sometime.
Getting close to 2PB :)
It's a record breaker!
Fingers crossed....
Todays update:
m4
1016.7463 TiB
4271 hours
Avg speed 73.87 MiB/s.
AD gone from 32 to 28
P/E 17523.
CE 26
MD5 OK.
Reallocated sectors : 00
http://www.diskusjon.no/index.php?ap...tach_id=493589
Intel X25-M G1 80GB
693.82 TiB
23581 hours
Reallocated sectors : 132 to 136
Available Reserved space: 76
MWI= 66 to 57
MD5 =OK
40.14 MiB/s on avg
http://www.diskusjon.no/index.php?ap...tach_id=493588
Intel X25-E 64GB
220.20 TiB
669-30=639 hours
Reallocated sectors : 0
Available Reserved space: 100
MWI= 98
MD5 =OK
91.11 MiB/s on avg
http://www.diskusjon.no/index.php?ap...tach_id=493590
Mtron Pro 7025 32GB
ASU write 14.7878 TiB
Host write 26,8596 TiB
Total host write 74,3951 TiB
Day 4
MWI= 99
MD5 =OK
47.11 MiB/s on avg
http://www.diskusjon.no/index.php?ap...tach_id=493591
Generic USB Drive – 4 GB
Writes: 889.80 GB
Average speed: 2.72 MB/s
Going to have to suspend for a week as I'm going to be traveling.
The USB Drive is a bit interesting, as is SD/CF cards for DSLRs, they do take some beating.
I've been using a 32GB SanDisk Cruzer? for years, still working but is noticeably slower than it used to be, large files are OK but small files are taking forever.
Not sure how much is written but it was used on a daily basis and a few times a week for "backup" of a single ~2GB file, I have tried and there is no way of restoring performance.
A USB thumb drive does not have a controller (AFAIK), so it’s about as close as you can get to testing NAND only without specialist equipment. I was interested to see how well the NAND stacked up with no controller vs a sophisticated SSD controller. TBH I knew I was going to be travelling, but I didn’t think it would have lasted until then. It’s a bit annoying to have to stop, but theoretically it should be well within P/E cycles, so hopefully no big deal.
Ummm, no, USB thumb drives certainly have controllers. They perform wear leveling and command multiplexing like destop drives. Most won't be as complicated nor as advanced as the sandforce and marvell SSD controllers, but the basic functionality is there.
USB/CF/SD:SSD :: WW I Biplane:F22 Raptor
Some mobile devices have a couple of flash ICs that are managed and operated by the SoC as I understand it, while others have discreet flash controllers.
I beg to differ. SD/CF controllers sure, they are as simple as they get. But USB drive controllers are more complex, especially with the advent of extremely large USB 3.0 drives. More akin to a P51 Mustang in your analogy.Quote:
Originally Posted by Christopher
I've seen a few usb 3.0 sticks that are actually lil mini ssds...think there is even one that uses a SF1200 if I remember correctly, not cheap tho.
That's quite true. Many USB 3.0 devices really blur the line, I was more referring to "old-style" USB drives. There are quite a few in-between solutions and some are more SSDs (or are SSDs). But that USB stick I've had floating around for the past 6 years? Probably not that bright.Quote:
Originally Posted by Kain665
http://en.m.wikipedia.org/wiki/Thumb_drive
l'm using a usb 2 thumb drive. The controller is very basic, certainly nothing like a ssd controller.
My 64 gb Kingston USB 3 DataTraveller :)
http://i546.photobucket.com/albums/h...20608-0651.png
Intel 520 60GB - Day 103
Drive hours: 2,421
ASU GiB written: 768,721.26 GiB (750.71 TiB)
Avg MB/s: 93.21 MB/s
MD5: OK
Host GB written (F1): 774,055.06 GiB (755.91 TiB, 24769762 raw)
NAND writes (F9): 547,971 GiB (535.13 TiB)
Reallocated sectors (05): 0
Failure count (AB, AC): 0 program, 0 erase
Raw Error Rate (8B): 120 normalised
Avaliable Reserved Space (AA): 100 normalised
Media Wearout Indicator (E9): 1
Sandisk Extreme G25 - 120gb - Day 3
Drive hours: 73
ASU GiB written: 30,467.31 GiB (29.75 TiB)
Avg MB/s: 120.38 MB/s
MD5: OK
Host GB written (F1): 30,712 GiB (29.99 TiB)
NAND writes (E9): 22,942 GiB (22.40 TiB)
Retired Block Count (05): 4
Failure count (AB, AC): 1 program, 1 erase
Raw Error Rate (01): 104 normalized
Media Wearout Indicator (E7): 97 normalized
Wear Range Delta (B1): 4 raw
Reported Uncorrectable Errors (BB): 0 raw
I got an erase failure this time that knocked out a couple more blocks on the sandisk extreme. At least it promises to be an interesting ride if nothing else! My calculations at this stage seem to indicate the sandisk firmware is programmed for 3000 write cycles (like the corsair force 3)
Silicon Motion SM3255P controller
Target Performance
- MLC sustained read rate: 22MB/s*
- MLC sustained write rate: 12MB/s*
- TLC sustained read rate: 18MB/s*
- TLC sustained write rate: 9MB/s*
datasheet
http://www.abload.de/img/sam_1485_resized9v7ou.jpg
Micron 25nm 32gbit 3K P/E NAND asynchronous
http://h12.abload.de/img/sam_1470_resizedz1uqd.jpg
Todays update:
m4
1021.9420 TiB
4292 hours
Avg speed 73.66 MiB/s.
AD gone from 28 to 25
P/E 17610.
CE 26
MD5 OK.
Reallocated sectors : 00
http://www.diskusjon.no/index.php?ap...tach_id=493692
Intel X25-M G1 80GB
696.74 TiB
23602 hours
Reallocated sectors : 136 to 142
Available Reserved space: 76 to 75
MWI= 57 to 50
MD5 =OK
40.29 MiB/s on avg
http://www.diskusjon.no/index.php?ap...tach_id=493691
Intel X25-E 64GB
226.74 TiB
690-30=660 hours
Reallocated sectors : 0
Available Reserved space: 100
MWI= 98
MD5 =OK
91.20 MiB/s on avg
http://www.diskusjon.no/index.php?ap...tach_id=493689
Mtron Pro 7025 32GB
ASU write 18.1485 TiB
Host write 33,0259 TiB
Total host write 80,5614 TiB
Day 5
MWI= 99
MD5 =OK
47.13 MiB/s on avg
http://www.diskusjon.no/index.php?ap...tach_id=493690
8 hours left to 1 PiB :)
That 520 is barreling towards 1pb without a single reallocation. I wonder when it'll pop...
--------------------------------------------
Plextor M3P 128GB Day 11
289,386.14 GiB
282.86 TiB
271.48 MB/s Avg, down from 273.49 MB/s in the other rig
298 Hours
Rellocated Event Count 0
--------------------------------------------
Samsung 830 256GB Day 80
1,967,199.61 GiB
1,921.07 TiB
293.82 MB/s Average
1945 Hours
8542 Wear Leveling Count
MWI 1
7/0 Erase/Program Fail
Used Reserved Block Count: 14/28672 sectors
---------------------------------------------
The march to 2PB continues. It actually has 1,980,526 GiB of LBA writes, but only 1,967,199 in ASU.
Well, it's "only" at 535TB of NAND writes ;)Quote:
Originally Posted by Kain665
The first 64GB M4 died without a reallocation, and the second one is at 1000TB without a reallocation yet. By comparison, my 830 256GB "only" made it to 1PB without a reallocation, but it's a 256. It's almost at 2PB with 7 reallocations, and I'm happy with that.