non-compressible is 520's (SandForce's) worst enemy. Sammy 840 Pro is the winner easy.
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non-compressible is 520's (SandForce's) worst enemy. Sammy 840 Pro is the winner easy.
When will we be seeing petabytes in this count? (1 billion gigabytes)
Kingston SSDNow 40GB (X25-V)
1759.1TB Host writes 57642046*32)
Reallocated sectors : 05 799 +11 (788)
Available Reserved Space : E8 86 (86)
POH 16528
MD5 OK
31.83MiB/s on avg (~515 hours)
--
8 more days, and it's been 2 years!
2 years indeed....chuggin' on....slowly but very surly, lol
What happened with this thread? As far as I see, with some small exceptions, it's almost dead from the end of January 2013.
Bump, keep the challenge going!
We should start doing bounties to test drives, lol. I'm wondering how the new Samsung 840 EVO's will perform.
Fantastic thread! Thank you for all the hard work you've done. Really, thank you.
I'd love to chip in with some $$ for a 840 EVO SSD purchase for it to be tested. Going to get one of them myself as well.
I've been away for quite some time. Read through this thread probably 8-12 months ago. No time right now to go back through it.
Just curious what you guys think is the best general usage drive for under $200 US?
The drive is for a friend. I was looking at Intel 520 cherryville, Samsung 830 or Samsung 840 EVO.
Comments? Suggestions? Any input is appreciated.
Thanks in advance.
Sammy 840 Pro if you can settle for 128GB. ;)
Seems to be a shame that this thread looks like its dead. I wonder what ever happened to that poor little trooper X-25
http://techreport.com/review/25559/t...t-200tb-update
Endurance experiment featuring some newer SSDs. Samsung doesn't look very good there.
Is anybody still having Crucial M4 running this test? Please respond. There is a way to get the device stats from the firmware using smartctl and we can compare that to what we wrote to the disk to see if the erase cycles and MWI exhausted numbers we came up with make sense.
The following are the stats for my crucial m4 256GB running for last 2.5 years in my desktop/home server.
I am very interested in these numbers for actual drive used in the endurance test...:) Thanks a bunch!Code:# smartctl -l devstat /dev/sda
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.12.5] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
Device Statistics (GP Log 0x04)
Page Offset Size Value Description
1 ===== = = == General Statistics (rev 2) ==
1 0x008 4 153 Lifetime Power-On Resets
1 0x010 4 20579 Power-on Hours
1 0x018 6 13725052826 Logical Sectors Written
1 0x020 6 322531254 Number of Write Commands
1 0x028 6 24940390620 Logical Sectors Read
1 0x030 6 459425614 Number of Read Commands
4 ===== = = == General Errors Statistics (rev 1) ==
4 0x008 4 0 Number of Reported Uncorrectable Errors
4 0x010 4 0 Resets Between Cmd Acceptance and Completion
5 ===== = = == Temperature Statistics (rev 1) ==
5 0x008 1 0 Current Temperature
5 0x010 1 0 Average Short Term Temperature
5 0x018 1 0 Average Long Term Temperature
5 0x020 1 0 Highest Temperature
5 0x028 1 0 Lowest Temperature
5 0x030 1 0 Highest Average Short Term Temperature
5 0x038 1 0 Lowest Average Short Term Temperature
5 0x040 1 0 Highest Average Long Term Temperature
5 0x048 1 0 Lowest Average Long Term Temperature
5 0x050 4 - Time in Over-Temperature
5 0x058 1 70 Specified Maximum Operating Temperature
5 0x060 4 - Time in Under-Temperature
5 0x068 1 0 Specified Minimum Operating Temperature
6 ===== = = == Transport Statistics (rev 1) ==
6 0x008 4 0 Number of Hardware Resets
6 0x010 4 0 Number of ASR Events
6 0x018 4 365 Number of Interface CRC Errors
7 ===== = = == Solid State Device Statistics (rev 1) ==
7 0x008 1 17~ Percentage Used Endurance Indicator
|_ ~ normalized value
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.
I think you misunderstood. These new stats are part of the standard now and are directly exported by the firmware. The SMART stats attributes are a mess. They were not there in the standard and are generally used incoherently by vendors (seen those Unknown attributes?). ACS-2 came up with SSD Device Statistics standard and they are now available through Device Statistics (GP Log 0x04) from the SSD in the form of various pages. Crucial is one of the few vendors who are correctly filling in those stats. You won't find these stats from SMART attributes. For example, Page 1 (shown below) is missing is completely in SMART attributes on an M4. Kudos to Crucial for being ACS-2 compliant...:)
So, now can you give me those stats from your M4 if you have it running endurance?....:DCode:# smartctl -l devstat,1 /dev/sda
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.12.5] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
Device Statistics (GP Log 0x04)
Page Offset Size Value Description
1 ===== = = == General Statistics (rev 2) ==
1 0x008 4 153 Lifetime Power-On Resets
1 0x010 4 20590 Power-on Hours
1 0x018 6 13762870401 Logical Sectors Written
1 0x020 6 323042073 Number of Write Commands
1 0x028 6 24966539804 Logical Sectors Read
1 0x030 6 460248105 Number of Read Commands
Really, they will help me in my analysis of M4's wear characteristics.
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 see the full stats so I could see if your drive was correctly reporting writes and wear.
Imo, durability of current generation SSD's is not a valid issue anymore for 95% of users unless it's being used in a busy server. I have an OS drive (Vertex 2 60Gb 34nm) which also catches d/ls that has been in use 24/7 for well over 2 years and it's only accumulated 7 TB. I'm not saying durability should be a non-factor cuz now that the prices have come down massively, a lot more people are using them for general storage...not just for the OS. I lucked up and won an M500 1TB drive from SSD Review and it will be seeing a sht load of primary storage duty. Even so, Crucial rates it at 40GB of drive writes a day for 5 years...I'll never even come close to that...lol
Surprise surprise
My X25-V is still alive
I'll be back with stats this weekend.
(I retired the drive from the test on Christmas eve, it's currently at 4% Health.)
At 2 years 7 months run-time, it's going to be a hard one to beat.
Not sure if this was posted before, but I came across this article:
Link
Seems intel is the only one right now (unless there's some hidden gems out there) that can handle power interrupts durring read/writes.
With my Samsung Pros not earning their PRO name, I'm thinking of switching to intel whenever I do a new build & either selling or using as a scratch drive.
None of the drives tested have caps/super caps...they are speaking on power cycling the drives at their power cable. As mentioned, ALL drives we're just fine when the box power was interrupted/cycled. Wouldn't put much stock in that write up. Only way it would hurt you is if your sata power block suddenly 'broke' connection...verrry unlikely. If the psu loses power. it's caps still provide enough of a 'delay' that an ssd will normally be able to complete it's current write/flush.
Afaik, the M4's do not have caps but the M500s do...not that I want to test mine.
That's insane! All I can say is what a drive...who'd have thunk?
Some interesting work being done by TR at http://techreport.com/review/26058/t...on-after-600tb
I wish they had one Crucial drive in there but I have a strong feeling that Crucial drives will do better than most they included in there.
They use Anvil's code.