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Is it a normal result for RAID 0 mushkin chronos 240GB? - Page 3

post #21 of 74
Quote:
Originally Posted by feniks View Post

sorry to resurrect but I am having (I think( similar performance trouble with same 2x Mushkin Chronos 240gb in raid0. a single drive can hit over 500MB/s in Sequential Read of AS SSD, but once raided they do not go above 395MB/s which is awkward knowing that most SSDs double that value while in raid0.

also, can anybody remembering those numbers from OP (AS SSD or CDM) post them? the pic in OP is gone and nobody ever wrote that in text ... this is so far the only thread I found mentioning those drives.

for future reference of later generations here are my benchmarks with AS SSD done on Maximus V Extreme using intel SATAIII/6G ports, BIOS 1707, OROM 11.0.1339 and IRST driver 11.7 under win8x64 (UEFI boot mode with secure boot):

a) either of single Chronos 240GB (non-deluxe) drives, either in AHCI or RAID controller mode
Did you take this bench? Because this is a Chronos Deluxe, not a non-deluxe as you states. The Deluxe has synchronous NAND while the non-Deluxe has toggle NAND. The non-deluxe would get read speeds around 200MB/s in AS SSD.
Quote:
b) 2x chronos 240gb in raid0 (128KB strip, write-back cache enabled) - that's a pure sadness in performance category down there


in ATTO everything looks normal good (up to 1050MB/s or so), but that software uses uncompressed data fill, no? useless for real life comparisons ...

... why didn't I go with samsung pro ssds ...
This is your bench for sure now right? If you have a non-deluxe array this is about where you would be. If you mixed a deluxe with a non-deluxe the speeds will be 2x the non-deluxe which could explain your confusion.
post #22 of 74
thanks to everybody for chiming in! here are replies, read below quotes.

Quote:
Originally Posted by Unit Igor View Post

Sorry man,i just saw Rampage IV instead of V,and i didnt even look proccesor.Then you have trim.
You know you have to leave SSDs in log off state for some time,because TRIM on raid is not so fast as it on AHCI.
no probs, yeah I am runnin 3770K. my rig runs 24/7 and TRIM is set to weekly, so I'm not worried about it. I did notice however that TRIM in AHCI is instant quick while in raid0 it was lagging up to 2 minutes and always over 70% mark ... just like it was having trouble with secondary drive.
Quote:
Originally Posted by Unit Igor View Post

O and for me,(i tested them all)still the best is Intel RST 11.2.0.1006 for Windows 7 64-bit in RAID field.
You didnt tell as ,how much free space you have .
I tested only IRST 11.5 (latest official from ASUS) and IRST 11.7 (latest official from Intel), issue was present on both.
there was around 200GB free out of 447GB in raid0. however eventually I removed some stuff and free space grew to over 50%, yet the issue was same.
Quote:
Originally Posted by compalalaska View Post

Um, I would make sure the drives are plugged into the sata 3 6gb/s ports and not the sata two. Because that is kinda close to some sata 2 raid speeds.. should still be higher, but never know
yes, both drives are plugged into Intel Native SATAIII/6G ports. IRST also reports both drives as running 6Gbit/s ... not sure what's up here. I am using the latest official Intel chipset driver (ends with .1026 I think).
Quote:
Originally Posted by DooRules View Post

I doubt being in uefi will slow down the drives that much guys.

Seems like something else is amiss here. Almost like a really bad cable, one drive in 6 gb port and one in 3 gb port would be my guess.

Might want to try new irst also.
so UEFI secure boot and GPT based OS installation shouldn't matter? I start thinking about a bad cable too, but yet each of drives running over same ports and same cables in single (non-raided) mode tested good in ATTO (primary drive on left, secondary drive on right):

Quote:
Originally Posted by Unit Igor View Post

Yes definitely,efi will not stop RAID that much.But still,little bit here and little bit there,and here it is,now is good.
Those are asynchronous drives,is somebody see them in Raid.
thanks for confirming that EFI has nothing to do with it. was worried I would have to re-install my OS with all the crap I have in it, a complete fresh install (with all apps and settings to my taste) takes me like 3 evenings LOL ...mad.gif

yes, they are asynchronous drives, that's what I found too, is that a problem in itself for raid0?
Edited by feniks - 4/1/13 at 1:14pm
post #23 of 74
Quote:
Originally Posted by Sean Webster View Post

Did you take this bench? Because this is a Chronos Deluxe, not a non-deluxe as you states. The Deluxe has toggle NAND while the non-Deluxe has asynchronous NAND. The non-deluxe would get read speeds around 200MB/s in AS SSD.
This is your bench for sure now right? If you have a non-deluxe array this is about where you would be. If you mixed a deluxe with a non-deluxe the speeds will be 2x the non-deluxe which could explain your confusion.

yes, both benches are mine and both drives are actually non-Deluxe models of Chronos 240GB, like this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820226237

another confirmation is from OROM itself (pic taken when secondary drive dropped out after BIOS reflash):


EDIT:
so hold on.
are you saying that Seq Read speed drop from 500MB/s to 400MB/s when comparing single vs raid0 is normal for asynchronous drives? something doesn't make sense here. both drives are non-deluxe and yet they score what you can see in benchmarks...

if all that is caused by asynchronous NAND then I will be selling those drives asap and going with something normal ...
post #24 of 74
That bench with AS SSD with a single drive is odd.

Here is what that drive is supposed to get in AS SSD:



Crystal disk mark:



ATTO:



It is extremely odd seeing your result of 500MB/s on AS SSD with a async drive. Especially since all other benches point to different speeds. They should be getting ~200MB/s seq reads in AS SSD.

So both drives bench like that when they are a single drive? Retry the benches? I am really in disbelief at the moment lol.

Also, what's up with your partition offset in those screens (top left corner of AS SSD)? It is odd as well.
post #25 of 74
Hi biggrin.gif

Thanks for remembering about me LOL. yeah that's odd isn't it?
also despite the fact that today is the Fool's Day, it's no joke about the Read speeds of my non-deluxe drive. screenshot and photo below.

Sean, which firmware are you running on your chronos? there is 5.0.6 updater on Mushkin forums. my older chronos drive is running 5.0.6, the newer came with 5.0.7 (no such public updater):
http://poweredbymushkin.com/forum/mushkin-solid-state-drives/13-506-firmware

Also, no worries about partition offset, it's bigger than in MBR disk, because that is a win8 OS on pure UEFI with GUID Partition Table (GPT), hence more space taken before actual OS partition. numbers match up however and partitions are aligned correctly, tested that with a few calculators and alignment tools (Paragon and Acronis).

I have benches history of this drive across different boards (evga Z68 FTW, EVGA Z77 FTW, ASUS MVE) with different BIOSes (and OROMs, they are flashed together), different or no IRST drivers present ... will dig through that later.

For now here are fresh benches on ASUS MVE, running BIOS 1707 with OROM 11.0.1339 and UEFI IRST SATA driver 11.5 (that's within BIOS). in windows 8 x64 I am currently running IRST 12.0, but I was getting same consistent results (give or take a few MB/s) with IRST 11.5/11.7 or no IRST installed at all.
That was tested in both AHCI mode and RAID controller mode (on single drive that is, no-raid member config), same consistent results.

photo:


and screen shot, easier reading:



and yes, both drives were performing same in ATTO and AS SSD when tested single on port0 or port1 (both are Intel SATAIII/6G, chipset Z77). Secondary drive went to newegg rma exchange, was experiencing some kind of TRIM lag while in raid0 and was always getting kicked out of raid0 after BIOS upgrade/reflash or switching between BIOS1 vs BIOS2 on the board- not sure about the latter since there was a problem with default SATA mode during initial boot up which could have been killing raid0 config ... and after BIOS flash I was Loading Deafults, then saving & restarting and going instantly back to BIOS to set my configuration ... but I think that single bootup in default SATA mode was killing raid0 - will double check that tomorrow with 2x HDD raid0, just need to borrow them from work.
Quote:
Originally Posted by Sean Webster View Post

That bench with AS SSD with a single drive is odd.

Here is what that drive is supposed to get in AS SSD:



Crystal disk mark:



ATTO:



It is extremely odd seeing your result of 500MB/s on AS SSD with a async drive. Especially since all other benches point to different speeds. They should be getting ~200MB/s seq reads in AS SSD.

So both drives bench like that when they are a single drive? Retry the benches? I am really in disbelief at the moment lol.

Also, what's up with your partition offset in those screens (top left corner of AS SSD)? It is odd as well.
post #26 of 74
now, after issues were settled regarding the genuine or not, let's get back to main subject.

why chronos 240GB (non-deluxe) drives report such and such speeds as single drives and when put in raid0 on same system they run like crap? what's wrong here?
post #27 of 74
Quote:
Originally Posted by feniks View Post

Sean, which firmware are you running on your chronos?
I dont have one atm. lol
Quote:
now, after issues were settled regarding the genuine or not, let's get back to main subject.

why chronos 240GB (non-deluxe) drives report such and such speeds as single drives and when put in raid0 on same system they run like crap? what's wrong here?
No idea confused.gif

You using a 128k stripe? Try 16 or 32 or 64?
post #28 of 74
here are 2 screen shots from the past, same SSD drive, but running under:

a) EVGA Z77 FTW with BIOS 1.04 (wrote that in filename) and some old OROM, there was no IRST driver installed, MS AHCI was in use, system was Windows 7 x64 SP1 running on normal MBR partition:
drive was used in Intel native SATAIII/6G port0 (z77 chipset)
SSD was running firmware 5.0.2
benchmark is dated 07.26.2012


then I have also CDM benchmark from same board, BIOS 1.07, file properties show it was done on 07.24.2012 (I was switching between BIOSes often on that board)


b) ASUS MVE with BIOS 704 and some old OROM (10.x probably), there was no IRST driver installed, MS AHCI was in use, system was Windows 7 x64 SP1 running on normal MBR partition:
drive was used in Intel native SATAIII/6G port0 (z77 chipset)
SSD was running on firmware 5.0.2
benchmark is dated 09.23.2012


just to make sure we are on same page here, this SSD is Mushkin Chronos Enhanced (non-deluxe!), part number MKNSSDCR240GB (no -DX on the end).
post #29 of 74
LOL, I thought you have it on hand over there heh.

I tried RAID0 with 32KB strip first and it was bad (read: worse), then I re-imaged my win8 onto RAID0 with 128KBstrip, got better by a tiny bit, but still worse than a single drive.
Finally I performed a fresh install of windows 8 and it was only slightly better on write speeds (10-20% gain), but sequential read was still bad.

I think 5.0.7 firmware had some more changes over 5.0.6 than Mushkin Technician told me, perhaps that was the root cause, not sure... really ... I'm afraid to buy a pair of more expensive SSDs (like Samsung Pro) because usually can't return them and what if I observe same weird behavior? super fast single and crappy raid0?
Quote:
Originally Posted by Sean Webster View Post

I dont have one atm. lol
No idea confused.gif

You using a 128k stripe? Try 16 or 32 or 64?
post #30 of 74
Here's a pair of Corsair Neutron GTX 120GBs in Raid 0. Just in case someone is interested or wants a comparison. Hope you get it sorted out.

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