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I couldn't help myself.

I'm doing a samsung 850 endurance test over at:

http://forums.whirlpool.net.au/forum-replies.cfm?t=2311278

Anvil,

I'm getting weird display on endurance testing:

http://www.canthearu.com/samsung850/Samsung%20850PRO%20Day0.PNG

I don't get any of the labels for each of the fields, so instead of it...

This is the problem right here. I have 8 x 2tb consumer drives at home. I bet if I ran a several disk test on these when I get home I wouldn't get a data read error. Given the reasoning in this...

I'm not running any endurance test. However, your drive is showing, using that current smart command, far more wear than expected for a 250gig drive that has only done 6TB of writes

I wanted to...

I can understand "smartctl -a /dev/sda" better.

-a will give unmolested statistics from the drive's smart function.

Having software molest the data tends to lose some of the information.

As one of the testers in that thread, I'd like to say:

a) Most drives performed very well. While all the drives eventually died, they all did so after simulating decades of normal desktop use....

Programs like fancy cache are a bit of a fail IMO.

All non hard drive benching software already caches data extensively in memory through the normal windows page cache. In addition, windows will...

I have done it a few times to get more space in a single volume, but at a lower price.

512gig drives can be very expensive, but are now coming down in price.

Look at how my vertex 4 tests went ... a vector would behave quite similarly (but not as strongly as the 120gig version of course)

To be fair, after this many drives tested and destroyed, and none of them entering any type of read-only mode (not even the intel 330 which was sandforce and looped it's bad block counter) I'm going...

Not sure who said that originally, but this one of those myths that seems to have caught on without anyone really testing it.



Hard drives can be just as temperamental ... and neither device...

Samsung 840 - FINAL REPORT - DEAD - As of Day 52

Drive Hours: 1235
ASU GiB Written (APPROX): 443,309.73 (432.92 TiB)
Avg MB/s (APPROX): 101.10
MD5: OK

Wear Leveling Count (B1): 3556 raw (1...

I do tend to agree with you. And I'm not saying the Samsung 840 is a bad drive, because it isn't. (Although, I'd like to see how well Christopher's test went as well, as he indicated he did one and...

It is only one factor. The Samsung 840, at it's current price, is just not competitive. There is no compelling reason to buy a TLC based drive for the same price as a MLC based drive.

Why would I buy a drive which is slower and has lower quality NAND when I can get something a bit faster and more durable for cheaper (like the sandisk extreme 120gig)

If the samsung 840 ends up...

You are right, It died about 5 hours ago.

Not a terrible result out of this drive at all, but I wouldn't buy it unless it is cheaper than the alternatives (which it isn't at the moment)

Try it outside of a virtual environment.

Even the linux console in ESXi is a virtual machine, so it will have the same kinds of overheads as any other virtual machine.

Samsung 840 Day 51

Drive Hours: 1216
ASU GiB Written: 437,361.39 (427.11 TiB)
Avg MB/s: 101.10 (549.80 hours)
MD5: OK

Wear Leveling Count (B1): 3508 raw (1 normalized)

Reallocated blocks...

When I tried teracopy myself, I found it quite slow actually, when dealing with a very large number of files (more then 1million)

When I need something better then the explorer copy program, which...

Not sure how much longer mine will hold out for ... maybe a week ... maybe 2 at this stage (has 27 bad blocks now)

The 830 is a MLC drive with 256GiB of NAND onboard.

The 840 (not 840 pro) is a TLC drive with 128GiB of NAND onboard.

The 830 has twice as many NAND chips that can be working, as well as a less...

Samsung 840 Day 47

Drive Hours: 1116
ASU GiB Written: 403,139.61 (393.69 TiB)
Avg MB/s: 101.97 (449.63 hours)
MD5: OK

Wear Leveling Count (B1): 3232 raw (1 normalized)

Reallocated blocks...

First bad block on the 840.

Not due to a erase or program error ... must be a read error

Yeah, your CPU won't be throwing thousands of 4K requests at the drive all at once. 4K just shows the extreme extrapolation of how it works, as windows would be requesting a mix of small and large...

Run linx on 1 thread on the background. This will forcibly lock the CPU at it's highest performance state, then run the AS-SSD benchmark.