SSD Write Endurance 25nm Vs 34nm

[canthearu]

Well, I still have that Intel 520, your rep is welcome to contact me regarding it (and getting it back).

I am intrigued about the reasons behind the panic locking death of my Intel 520.

[Christopher]

I was only dissappointed with the M3P because I really thought it would reach 1PIB. It was using twice the number of PE cycles as the 830 with half as much flash. It's still a fantastic drive.
--Good thing I have another!

[Christopher]

I don't know whether the MWI on the Plextor was spot on or whether it was just a coincidence. I don't think it was the erase failures, but it was the read failures that did it in (IMHO). MWI is based on reallocation events, but it only had 15 read failures.

[Zaxx]

I am intrigued about the reasons behind the panic locking death of my Intel 520.

That makes two of us...maybe they'll bite.

[Christopher]

[Anvil]

Intel 330 120GB

475.67TB Host writes
1.81TiB Host reads
Reallocated sectors : 05 4
Available Reserved Space : E8 100
MWI 45
[B5] 2
[B6] 2
[F1] Total LBAs Written 15586863
[F2] Total LBAs Read 59207
[F9] Total NAND Writes 343364GB
POH 1165
MD5 OK

125.04MiB/s on avg (~35 hours) // looks like there is a small increase in write speed

--

Kingston SSDNow 40GB (X25-V)

1108.31TB Host writes (36317077*32)
Reallocated sectors : 05 54
Available Reserved Space : E8 99
POH 9898
MD5 OK

34.77MiB/s on avg (~35 hours)

[canthearu]

Sandisk Extreme G25 - 120gb - Day 37

Drive hours: 885
ASU GiB written: 381,370.22 GiB (372.43 TiB)
Avg MB/s: 125.23 MB/s (322.50 hours)
MD5: OK (verified off disk now)

Host GB written (F1): 383,510 GiB (374.52 TiB)
NAND writes (E9): 286,169 GiB (279.46 TiB)

Retired Block Count (05): 4 raw
Failure count (AB, AC): 1 program, 1 erase
Raw Error Rate (01): 118 normalized
Media Wearout Indicator (E7): 24 normalized
Wear Range Delta (B1): 4 raw
Reported Uncorrectable Errors (BB): 0 raw

[canthearu]

Anvil: On my sandisk extreme

B5 = Program Fail Count
B6 = Erase Fail Count

So I'm pretty sure that is what your Intel 330 is measuring too (given it is a sandforce based drive)

[Christopher]

Samsung 830 256GB Day 114

(GiB) 2,718,314.72
(TiB) 2,716.13

(Avg) 300.65MB/s

(B1) Wear Leveling Count: 12,055

(B6) Erase Fail Count: 9
(05) Reallocated Sectors: 36864
(POH) 2767

-------------------

[Anvil]

@canthearu

You may be right, although Intel did rearrange quite a few attributes.

Intel 330 120GB

491.36TB Host writes
1.85TiB Host reads
Reallocated sectors : 05 6
Available Reserved Space : E8 100
MWI 43
[B5] 3
[B6] 3
[F1] Total LBAs Written 16101001
[F2] Total LBAs Read 60503
[F9] Total NAND Writes 354688GB
POH 1201
MD5 OK

125.06MiB/s on avg (~71 hours)

--

Kingston SSDNow 40GB (X25-V)

1112.46TB Host writes (36453240*32)
Reallocated sectors : 05 54
Available Reserved Space : E8 99
POH 9934
MD5 OK

33.95MiB/s on avg (~71 hours)

--

Endurance_cr_20120713.png

The Plextor is shown one last time as TiB written was quite a bit up from the previously reported value.

[Christopher]

Samsung 830 256GB Day 115

(GiB) 2,811,688.22
(TiB) 2,745.79
(PiB) 2.70


(Avg) 302.38 MB/s

(B1) Wear Leveling Count: 12,186

(B6) Erase Fail Count: 9
(05) Reallocated Sectors: 36864
(POH) 2795


-------------------

The 830 has been averaging over 300MB/s for the past four days! Crazy.

If I were to run another 128GB M3P but artificially reduce PE/day, I think it would make it to 1.5PiB.

[Anvil]

I've been thinking about making an option for reducing throughput, not set yet but it might be interesting.

Not sure if the Plextor fits the "Drives that did not meet MWI spec" chart as MWI is handled differently, I'm leaning towards putting it in the standard chart.

Endurance_cr_20120713.png

Endurance_PEsummary_20120713.png

[ice_chill]

Great work. I find this thread fascinating. Also I thought Intel 520 would go on forever, but it looks like the Sandforce controller is a let down, as it died without even reporting relocated sector counts first.

[canthearu]

Great work. I find this thread fascinating. Also I thought Intel 520 would go on forever, but it looks like the Sandforce controller is a let down, as it died without even reporting relocated sector counts first.

Don't forget though, the 520 is a desktop drive based on MLC. It won't receive the absolute best NAND, as it has already been turned into eMLC for their enterprise products. It's tested life, at roughly twice the specifications that Intel put on the nand (10k cycle real life, 5k cycle rated life) was still quite good.

[ice_chill]

Don't forget though, the 520 is a desktop drive based on MLC. It won't receive the absolute best NAND, as it has already been turned into eMLC for their enterprise products. It's tested life, at roughly twice the specifications that Intel put on the nand (10k cycle real life, 5k cycle rated life) was still quite good.

It's far better than OCZ's NAND, but compared to Samsung 830 it's dissapointing for the reason that the Intel SSD costs considerably more than Samsung 830.

[canthearu]

but compared to Samsung 830 it's dissapointing

Lets not get ahead of ourselves, the samsumg hasn't even reached the same amount of writes as the Intel 520 yet ... at least on a per gig of accessable space basis. The samsung drive is 256gig, the intel was a 60gig.

A bit early to be decrying how much the Intel drive sucks, especially when there isn't a hope in hell that any desktop user will reach the MWI on either the intel or the samsung.

In any case, both the intel 520 and the samsung 830 is a great drive.

[Zaxx]

The samsung drive is 256gig, the intel was a 60gig...

Yup...size does matter with ssds...lol The amount of over provisioning also plays a role re: endurance...the 40GB Kingston (Intel X25-V) is a prime example, afaik it has 64GB of nand on board. As a rule I run all my raided drives with 33% OP and my OS drive at 28%.

[Christopher]

The X25-V does not have 64GB of flash. The X25-E was over provisioned (32Gb had 40 and the 64GB has 80GB).

As fast as the 830 is, it's equivalent to the 64GB M4 on a speed per GB basis.

[Zaxx]

Right u are...I some-what remembered that there were some older intels with lotsa OP...just not which ones.

[B.A.T]

Been a while since last update but it's been crazy days at home. Here are todays update:

m4
1206. 5945 TiB
5040 hours
Avg speed 70.68 MiB/s.
AD 187 to 176
P/E 20774.
C3 4457
CE 58
MD5 OK.
Reallocated sectors : 00


Intel X25-M G1 80GB
787.58 TiB
24327 hours
Reallocated sectors : 199 to 237
Available Reserved space: 57 to 54
MWI= 219
MD5 =OK
32.67 Mi/s on avg


Intel X25-E 64GB
484.53 TiB
1508-30=1478 hours
Reallocated sectors : 0
Available Reserved space: 100
MWI= 96
MD5 =OK
89.91 MiB/s on avg


Mtron Pro 7025 32GB
Paused until I've updated the firmware.

[canthearu]

Sandisk Extreme G25 - 120gb - Day 39

Drive hours: 937
ASU GiB written: 404,326.09 GiB (394.85 TiB)
Avg MB/s: 125.30 MB/s (374.42 hours)
MD5: OK (verified off disk now)

Host GB written (F1): 406,579 GiB (397.05 TiB)
NAND writes (E9): 303,404 GiB (296.29 TiB)

Retired Block Count (05): 4 raw
Failure count (AB, AC): 1 program, 1 erase
Raw Error Rate (01): 116 normalized
Media Wearout Indicator (E7): 19 normalized
Wear Range Delta (B1): 4 raw
Reported Uncorrectable Errors (BB): 0 raw

[sequoia464]

The X25-V does not have 64GB of flash.

Do you know how much nand these drive actually have? If I remember correctly the Intel controller has 10 channels, but just half are used in the V models? I still have a couple of the Kingston versions flashed over to the Intel firmware so they have trim. Not that it does any good as they are in a raid0 situation. Great little drives.

Edit; just opened one up - it does use 5 of the ten channels with 8Gb chips = 40 Gb total.

[Christopher]

Do you know how much nand these drive actually have? If I remember correctly the Intel controller has 10 channels, but just half are used in the V models? I still have a couple of the Kingston versions flashed over to the Intel firmware so they have trim. Not that it does any good as they are in a raid0 situation. Great little drives.

Edit; just opened one up - it does use 5 of the ten channels with 8Gb chips = 40 Gb total.

Yes, the Vs have 40GB onboard, occupying 5 channels. The 311 is the same way, but the 320 40GB has 8 GB of redundant flash for its parity scheme.

[Christopher]

Samsung 830 256GB Day 117

(GiB) 2,859,613.04
(TiB) 2,792.59
(PiB) 2.74


(Avg) 297.07 MB/s

(B1) Wear Leveling Count: 12,392

(B6) Erase Fail Count: 9
(05) Reallocated Sectors: 36864
(POH) 2843


-------------------

[Anvil]

Intel 330 120GB

517.72TB Host writes
1.91TiB Host reads
Reallocated sectors : 05 6
Available Reserved Space : E8 100
MWI 40
[B5] 3
[B6] 3
[F1] Total LBAs Written 16964531
[F2] Total LBAs Read 62668
[F9] Total NAND Writes 373709GB
POH 1261
MD5 OK

125.15MiB/s on avg (~132 hours)

--

Kingston SSDNow 40GB (X25-V)

1119.47TB Host writes (36682750*32)
Reallocated sectors : 05 56 // 2 up
Available Reserved Space : E8 99
POH 9995
MD5 OK

33.60MiB/s on avg (~132 hours)