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Few M4 Raid questions

post #1 of 12
Thread Starter 
I've never tried Raid out, but I recently bought a second SSD and I'd like to. I've had a M4 64gb running my OS and a few games for a while now, and I bought a second for a laptop (but decided to use it elsewhere after it didn't give a good performance boost).

My questions are:
1. Two 64gb in Raid 0 = 128gb, correct?
2. Is there a way to get these to support TRIM in Raid 0 yet?
2a. If not, is there any significant loss in doing it anyway?
3. Is it possible to preserve my current SSD/HDD setup while moving everything presently on my SSD to the new raid array?
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The Walrus
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post #2 of 12
1. yes, it will be 128gb
2. No, no trim yet, but it's coming in 11.5 of RIST I believe.
2a. Should be fine.
3. Yes. it's possible, but I don't recommend it. It's always better to do a fresh install.
post #3 of 12
Thread Starter 
I searched IRST and it looks like its on version 9... did they say when 11.5 is coming?
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post #4 of 12
Quote:
Originally Posted by Apk View Post

I searched IRST and it looks like its on version 9... did they say when 11.5 is coming?

Supposedly in the next few months. I don't believe there is a definite date. I wouldn't worry too much though, lots of people are doing raid 0 with no issues.
post #5 of 12
Intel RST 11.5 is in it's alpha stage.
After the beta is announced then release is soon. I'm guessing up to 2-3 months from now.
Edited by tumbirs - 5/13/12 at 10:39am
post #6 of 12
Latest irst drivers wink.gif (I hab bookmarked cuz umm..hard to find sometimes)
http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=20507&keyword=+enterprise&lang=eng
 
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Thuban Powah!
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post #7 of 12
I ran RAID 0 SSD's for over 6 months and they did not degrade at all without trim. Drive life was still 100%.

FWIW, I would just get a single larger one, RAID isn't worth it with SSD's unless you want to look cool on internet forums. The time it takes to boot the array and the fact that you will not notice any improvement in speed whatsoever pretty much killed it for me. I went back to a single SSD recently and was shocked at how much faster it felt doing the same tasks, and I greatly enjoy my 15 second boot times rather than nearly a minute. The capacity was nice but I will stick to a single one from here on out. yeah it was cool being able to bench crazy numbers but the reality was it hurt my user experience more than it helped.
post #8 of 12
Exclusively for Intel® Desktop Board DX79SI, DX79SR, DX79TO.
frown.gif
Quote:
Originally Posted by Scorpion49 View Post

I ran RAID 0 SSD's for over 6 months and they did not degrade at all without trim. Drive life was still 100%.
http://www.xtremesystems.org/forums/showthread.php?271063-SSD-Write-Endurance-25nm-Vs-34nm
If raid SSD is written a lot then endurance will drop and reading has no endurance penalty.

To avoid diverse affects of no TRIM for SSD raid, a large capacity (128gb+) is required to allocate data onto new cells but if drive is full then the remaining cells take wear leveling hits. MLC have 3000 writes per cell, 4k page per cell, cells with data are not used to write and the remaining cells take hits. TRIM evenly distributes data to each cell with less writes on it, organizes or gathers garbage data with data less than 4k and fits it into a 4k page cell. (+wear reduction techniques like copying multiple same file on ssd with no capacity taken using crc check).

Reading has no endurance penalty. (Nand/ Write Cycles: mlc 25nm 3000, 34nm 5000, emlc 25nm 22000, slc 32nm 175000)

Raid users; simply need manually manage their data allocation and with a large capacity it shouldn't be a problem.
(no pagefile, temp files moved to HDD or ramdisk (2GB) and fancy cache write delay for gathering tiny files less than 4k page)

Is there a defragment tool to gather data less than 4k into a 4k page?
Edited by tumbirs - 5/13/12 at 6:27pm
post #9 of 12
Thread Starter 
He posted the wrong link for IRST. This is the one I have:
http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&ProdId=2101&DwnldID=20624&ProductFamily=Software+Products&ProductLine=Chipset+Software&ProductProduct=Intel%C2%AE+Rapid+Storage+Technology&lang=eng

Is there any decent way to make an image of my non-raid SSD and restore it to a raid 0?
Also, boot speeds and e-penis don't mean anything to me, I just want to work with what I have, and take advantage of 128gb instead of 64. I'm not going to buy another SSD for a long while, and this ones just laying around so I might as well

Edit: I see the alpha/beta of 11.5 is floating around the internet... people seem to be having good luck with it as far as SSD Raid 0 goes
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The Walrus
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post #10 of 12
Sorry, I haven't experience with SSD raid setups and clones.
I usually go for fresh installs and reinstalling applications.
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