SSD Write Endurance 25nm Vs 34nm

[B.A.T]

It sure looks like that. I didn't think about it when I posted the screenshots. The firmware updated failed and SSDLife shows v 0002 so I don't know what happend.

[bulanula]

Any volunteers for the USB "dumb flash controller" test ?

[Anvil]

@bulanula
This is the SSD endurance test, not the USB-Stick endurance test, anyways, there is no way to test USB drives using my software, it disables USB drives and there is generally no way of reading SMART from such drives. (so, no reporting)

--

296.49TB Host writes
Reallocated sectors : 6
MD5 OK

34.07MiB/s on avg (25hours)

21304GB written "Last 7 days" according to SSDLife.

[bluestang]

M225->Vertex Turbo 64GB Update:

238.64 TiB total
753.8 hours
5411 Raw Wear
110.39 MB/s avg for the last 56.72 hours (on W7 x64)
MD5 OK
C4-Erase Failure Block Count (Realloc Sectors) from 2 to 3
(Bank 6/Block 2406; Bank 3/Block 3925; Bank 0/Block 1766)

[devsk]

Any volunteers for the USB "dumb flash controller" test ?

Yes. bulanula is that volunteer!

[bulanula]

@bulanula
This is the SSD endurance test, not the USB-Stick endurance test, anyways, there is no way to test USB drives using my software, it disables USB drives and there is generally no way of reading SMART from such drives. (so, no reporting)

--

296.49TB Host writes
Reallocated sectors : 6
MD5 OK

34.07MiB/s on avg (25hours)

21304GB written "Last 7 days" according to SSDLife.

Yes but I am sure that we could just see how long the USB will last because we will know how much TB we write to it without complicated SMART parameters etc.

[B.A.T]

m4 update:
473.1481 TiB
1545 hours
Avg speed 90.90 MiB/s.
AD gone from 84 to 80.
P/E 8296.
MD5 OK.
Still no reallocated sectors


Kingston V+100
The Kingston dropped out again so I got the log fixed with help from Anvil and startet up the test again. I'll post tomorrow because the test had only gone for a couple og hour last night before it dropped.

[B.A.T]

m4 update:
477.6755 TiB
1558 hours
Avg speed 90.94 MiB/s.
AD gone from 80 to 77.
P/E 8372.
MD5 OK.
Still no reallocated sectors


Kingston V+100
The Kingston dropped out again during the night. I'm going to halt the test until I'v found out what causes this problem. It could be the MB starting to protest after 2 months of torture, but I don't know.

Next update from me will be monday.

[Anvil]

299.01TB Host writes
Reallocated sectors : 6
MD5 OK

33.25MiB/s on avg (48 hours)

20960.5GB written "Last 7 days" according to SSDLife.

[bluestang]

Is SSDLife Data monitor using GB as it is labelled, or is it really GiB?
I'm assuming GiB as GB doesn't add up.
Can someone confirm what is correct?

EDIT:
M225->Vertex Turbo 64GB Update:

244.72 TiB total
768 hours
5525 Raw Wear
110.27 MB/s avg for the last 15.65 hours (on W7 x64)
MD5 OK
C4-Erase Failure Block Count (Realloc Sectors) from 3 to 4
(Bank 6/Block 2406; Bank 3/Block 3925; Bank 0/Block 1766; Bank 0/Block 829)

[bulanula]

It is probably using GiB as that is what Windows uses by default etc.

[Vapor]

It is GiB. It converts the sector count SMART readout, which are 512 bytes.

[bluestang]

It is GiB. It converts the sector count SMART readout, which are 512 bytes.

Thanks Vapor, clears it up for me!

Any updated charts coming soon?

[Anvil]

300.41TB Host writes
Reallocated sectors : 6
MD5 OK

(next update will be Sunday)

[Vapor]

C300 Update

332.3TiB host writes, 1 MWI, 5606 raw wear indicator, 2048/1 reallocations, 63.05MiB/sec, MD5 OK


SF-1200 nLTT Update

194.25TiB host writes, 140.188TiB NAND writes, 32 MWI, 2243 raw wear (equiv), wear range delta 3, 56.1MIB/sec, MD5 OK


Charts next post, sorry for the big delay!

[Vapor]

Host Writes So Far






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






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.






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

[bluestang]

Thanks for the chart updates....Have a great weekend everyone!

[bulanula]

Thank you for the graph updates. They were really needed.

[danwat1234]

Thank you all for doing this for the community. Are the Intel's still in the running? I'm excited how close all these SSDs are getting towards 1PiB before crapping out!

[One_Hertz]

MAJOR UPDATE:

12 hours ago the reallocated sector count was at 105 and reserve space was at 99%.

Now, my reallocated sector count is at 4071!!! and reserve space is at 27%. This SSD has hours left.... EXTREMELY sudden failure. I am at 395.7TB right now.

[Vapor]

Crikey!

(also, that's going to break my charts!!)

[Computurd]

holy cow more excitement! Seriously i cant believe the intel is going out this quickly...even though the normalized charts show it further than the others...noting that it outlasted the 34nm drive though when normalization of capacity is taken into consideration

[Meo]

how is it, that these drives last so much, when theoretically 25nm SSD should die after 3000 rewrites + some reserve.... ?

[bulanula]

So now I am just waiting for the results of :

M4 vs C300

and

X25-V vs Intel 320

so we can see how good ( or bad ) 25nm really is.

[Vapor]

how is it, that these drives last so much, when theoretically 25nm SSD should die after 3000 rewrites + some reserve.... ?

The 25nm NAND in the Intel 320 has a minimum P/E cycle rating of 5000. We really don't know what the average/typical/expected lifetime rating is, just minimum.