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RAID0 vs. TRIM - Page 2

post #11 of 23
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Quote:
Originally Posted by RaCeR123 View Post
6GB/s is definitely fast than the 3GB/s by a long shot. As far as garbage collection is concerned. You will get it no matter what you use, raid or not, garbage collection will be working. If you use raid you will lose TRIM, but the C300 already have garbage collection so losing TRIM isn't all that bad. So your marvell at 6GB/s in raid0 would give you the best possible speeds while still having garbage collection.
Alright. I don't know where I read it but I coulda sworn somebody told me that the ICH slots are better than the Marvell 6GB/s slots.

So my SSDs in RAID0 will be the fastest? Does anyone object?
post #12 of 23
Thread Starter 
Guess not?

So RAID is definitely the best way to go for speed? In the Marvell ports?
post #13 of 23
Yes! Raid, do it.. do it now.. MARVELL
    
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post #14 of 23
If you use a SATA 6 port with a SATA 3 device, isn't it actually a tiny bit slower...
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post #15 of 23
It doesn't matter if you use the 6Gb/s ports or the 3Gb/s ports. The name refers to its maximum theoretical speed which your drive comes nowhere near pushing so it makes no difference. Your SSD will read at 300MB/s (2.4Gb/s) if it is on a 3Gb/s maximum port or a 6Gb/s port.. it doesn't magically get faster because of what port it is plugged into unless it was being limited by the port.
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post #16 of 23
Quote:
Originally Posted by Markisa View Post
It doesn't matter if you use the 6Gb/s ports or the 3Gb/s ports. The name refers to its maximum theoretical speed which your drive comes nowhere near pushing so it makes no difference. Your SSD will read at 300MB/s (2.4Gb/s) if it is on a 3Gb/s maximum port or a 6Gb/s port.. it doesn't magically get faster because of what port it is plugged into unless it was being limited by the port.
Then explain to me why I get almost 100MB higher read speed on my C300 Sata I vs Sata II ?
Edited by RaCeR123 - 2/20/11 at 5:11pm
post #17 of 23
Thread Starter 
Alright great, thanks! That means I don't have to change anything out. Good deal.

Still about the RAID though, does anyone have any type of benchmarks or before and after results to directly compare other than just "go raid!" or "raid isn't worth it"?

Also, I just read that Intel released drivers to support TRIM in RAID. Apparently it is for ALL SSDs that allow TRIM. Will that work on the R3E? Does anyone know? I'm a little lost at this point.
Edited by xyeLz - 2/20/11 at 5:17pm
post #18 of 23
Quote:
Originally Posted by RaCeR123 View Post
Then explain to me why I get almost 100MB higher read speed on my C300 Sata I vs Sata II ?
Sata I is 1.5Gb/s, Sata II is 3Gb/s and Sata III is 6Gb/s. Maybe the drive doesn't like Sata II ports? It IS a Sata III drive (that is unable to push Sata II to its limit so there is no reason for it to be Sata III) so maybe it plays more nice with Sata III. I don't own a drive so such specifics I wouldn't know on but in general, all consumer drives sold currently with Sata III in mind cannot break Sata IIs barriers therefore it is considered a marketing ploy. If you get more speed out of your Sata III ports then go for it but it is regarded currently as no better than Sata II and that is why the Sandy Bridge motherboard issue isn't a 'big deal' for anyone can swap from the Sata III to Sata II with theoretically no loss in speed. Now that I think of it, it probably has to do with the Sata III using a different controller on your motherboard than the Sata II that is making the difference.

Quote:
Originally Posted by xyeLz View Post
Alright great, thanks! That means I don't have to change anything out. Good deal.

Still about the RAID though, does anyone have any type of benchmarks or before and after results to directly compare other than just "go raid!" or "raid isn't worth it"?

Also, I just read that Intel released drivers to support TRIM in RAID. Apparently it is for ALL SSDs that allow TRIM. Will that work on the R3E? Does anyone know? I'm a little lost at this point.
Think of Raid 0 like this. You poke one 1cm hole into a bowl full of water and the water starts to leak out at a consistent and slow rate. If you poke another 1cm hole, the speed at which the water leaks out is now doubled due to there being 2 identical holes. That is what having 2 hard drives in RAID 0 is. You asked before which drive holds which data? That is a trick question, both drives hold a piece of all of the data. If something consisted of 64 bits, drive 1 would have 32 bits of it and drive 2 would have 32 bits of it. By splitting the writing and reading of these 1s and 0s on the drives you have effectively theoretically doubled your speed at which your doing your tasks. It is like having 2 arms instead of 1.



Look at the OCZ Vertex in Raid 0 and just one alone. The speed is almost perfectly doubled. This isn't the C300 but results will be similar (as opposed to varied).
Edited by Markisa - 2/20/11 at 5:52pm
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post #19 of 23
Quote:
Originally Posted by xyeLz View Post
Alright great, thanks! That means I don't have to change anything out. Good deal.

Still about the RAID though, does anyone have any type of benchmarks or before and after results to directly compare other than just "go raid!" or "raid isn't worth it"?

Also, I just read that Intel released drivers to support TRIM in RAID. Apparently it is for ALL SSDs that allow TRIM. Will that work on the R3E? Does anyone know? I'm a little lost at this point.
Maybe your Marvell controller will work better for you in RAID0 with C300's. Mine did not. And I think we have the same board. I used the official Marvell drivers, from the ASUS website and they kept dropping one drive out of the array, and would require a restart.

As for the SATA3 drivers for trim with raid, no not on our controller. Marvell hasn't released any yet as far as I know that support TRIM and RAID.

I actually got better performance on writes, as well as boot time, on the Intel SATA2 controller.

I wish you the best of luck, as this was a massive headache for me too.
    
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post #20 of 23
here my raid 0 c300 2x 64g
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