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Raid0 ssd

post #1 of 10
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About getting 2 60GB SATA III SSDs in RAID0. I read in mulltiple places where TRIM (What is it and is it necessary to SSDs?) is disabled when placed in RAID. Also I have also read that getting 2 SSDs in RAID0 is pointless to speed, but I just can't get it though my head that 2 regular 7200RPM HDs in RAID0 perform better, why not SSDs?
Edited by bluedevil - 7/27/11 at 12:01pm
    
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post #2 of 10

I know this but I can't recall well. but it keeps your SSD nice and fast plus it will help its lifespan. Watch this instead :]


Edit: I forgot to answer the second part to your question; what?

SSD are slower in terms of "Write" but are Significantly faster in read times. Unless i missed something sometime
Edited by Dorianime - 7/27/11 at 2:04pm
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post #3 of 10
Thread Starter 
Quote:
Originally Posted by Dorianime View Post
I know this but I can't recall well. but it keeps your SSD nice and fast plus it will help its lifespan. Watch this instead :]

http://www.youtube.com/watch?v=NnBk2IGYerU
Interesting...I like the analogy with the insert key. Makes sense.

I did however find this.
http://www.bit-tech.net/news/hardwar...rim-for-raid/1
    
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post #4 of 10
Quote:
Originally Posted by bluedevil View Post
About getting 2 60GB SATA III SSDs in RAID0. I read in mulltiple places where TRIM (What is it and is it necessary to SSDs?) is disabled when placed in RAID. Also I have also read that getting 2 SSDs in RAID0 is pointless to speed, but I just can't get it though my head that 2 regular 7200RPM HDs in RAID0 perform better, why not SSDs?
TRIM helps to maintain your SSD write performance over time. The way SSDs work can cause its flash memory to get "dirty". TRIM helps to clean this up. Note that this performance loss is completely reversable with a reformat and that all new SSDs are pretty resistent from becoming dirty.

RAID0 only boost sequential performance... not random. Over 90% of disk operations for an OS/app drive is random.

RAID0 of HDD actually does NOT help real-world performance much. It only improves sequential performance.... benchmarks and file transfers.

A HDD can do around 0.5-1.5MB/s in random performance while a SSD can do 50-80MB/s



Quote:
Originally Posted by bluedevil View Post
That was a mis-interpretation of the changelog.

Intel RST drivers support TRIM for non-member SSDs. You can enable RAID and TRIM still works for SSDs that are NOT in an array. i.e. SSD + 2xRAID0 HDDs
Edited by DuckieHo - 7/27/11 at 2:09pm
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post #5 of 10
Dude that's Awesome!

This deserves to go n the news section!

I was gonna do it but you found it
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post #6 of 10
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So my real question now is, can I use 2 60GB SATA III SSDs with TRIM (according to the link I provided) ?

///edit


Sigh....Thanks duckie....
Edited by bluedevil - 7/27/11 at 2:11pm
    
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post #7 of 10
Quote:
Originally Posted by Dorianime View Post
Dude that's Awesome!

This deserves to go n the news section!

I was gonna do it but you found it
TRIM is NOT supported for SSDs in an array.

Quote:
Originally Posted by bluedevil View Post
So my real question now is, can I use 2 60GB SATA III SSDs with TRIM (according to the link I provided) ?
Read above.



I believe the only RAID controller that supports TRIM for member disk is the newest OCZ Revo 3 drive. This is a PCIe card that uses a software layer for RAID so there is no way consumers can adapt this for their use with SATA SSDs.
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post #8 of 10
Quote:
Originally Posted by bluedevil View Post
So my real question now is, can I use 2 60GB SATA III SSDs with TRIM (according to the link I provided) ?(
Well if i understood Correctly, Its now a Driver for Specific intel boards then yes ?
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post #9 of 10
Quote:
Originally Posted by DuckieHo View Post
TRIM is NOT supported for SSDs in an array.
Quote:
Thankfully, Intel has solved the problem with the release of a TRIM-compatible driver which finally brings the technology to SSDs in RAID arrays
I keep re-reading this thing, I can't possibly be misreading it the whole time cant I?


Duckie: you might be right, The article doesn't actually state what kind of SSDs are compatible with the new RAID drivers
Edited by Dorianime - 7/27/11 at 2:23pm
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post #10 of 10
never question duckie, hes never wrong.
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