RAID0 SSD Drives

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neverknowu

neverknowu

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Sep 19, 2012
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Hi,
I'm looking to RAID0 two of my SSD's for all the video work I do. I thought it was as easy as setting the drives as striped in Disk Management, but I'm not posting the read/write speeds I think I should get. I was getting around 500mpbs for both, but the drive alone says it should be providing that speed without being RAID0 (they are Samsung 840pro 512GB drives, advertised as being 540 read 520 write). Then I noticed on my Asus P9x79 deluxe mobo that I had them plugged into Sata 3gbps, and thought if I changed the connections to the Marvel 6gbps Sata ports I would post faster speeds, but now it's actually way slower, like 200mbps each.

Any help would be much appreciated.

Oh and I was also wondering if anyone has seen/used this: http://www.superspeed.com/desktop/supercache.php
 
Solution
popatim
Your problem is the marvel controller cannot acheive the rated speeds of sata3, its just uses the commincation protocol. Since you only have intel sata2 ports you can install a real sata3 capable card or replace your motherbd with one that has native intel sata3 ports.

Since you are editing videos though, its probably best to leave them as individual drives. One as the source and the other as the destination. Most editing software prefers a separate scratch disk also. Even a 4th separate OS drive is typically recommended. All this is to avoid having one drive trying to read and write at the same time which would effectively halve your render speed since the drive will read a little, stop, write a little, stop, read a little, stop...
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neverknowu

neverknowu

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Sep 19, 2012
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I'm using this for video VFX editing. That's sequential read/write, if my impression. What I read in the article you sent (thank you for that) is:
"As we expected, twin SSDs in RAID 0 post phenomenal numbers when we hammer them with sequential reads and writes. Twin 256 GB 840 Pros nearly hit 1 GB/s in both disciplines."

Should I put the Raid0 in the Sata 6Gbps ports, and the system drive in the Sata 3 Gbp port? Or is there a different way I should be looking at all of this?
 
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popatim

popatim

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Dec 2, 2009
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Your problem is the marvel controller cannot acheive the rated speeds of sata3, its just uses the commincation protocol. Since you only have intel sata2 ports you can install a real sata3 capable card or replace your motherbd with one that has native intel sata3 ports.

Since you are editing videos though, its probably best to leave them as individual drives. One as the source and the other as the destination. Most editing software prefers a separate scratch disk also. Even a 4th separate OS drive is typically recommended. All this is to avoid having one drive trying to read and write at the same time which would effectively halve your render speed since the drive will read a little, stop, write a little, stop, read a little, stop, write a little... With mechanical drive the situaltion was even worse since when they switch mode they have to reposition the heads every time too.
 
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neverknowu

neverknowu

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Sep 19, 2012
202
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18,695


Bummer. The Marvell on my board says its 6gbs, so it's not even really that?

It's for color correction, specifically blackmagic davinci resolve. The hardware config is always wanting the highest possible read/write speeds for large video files like 4k and the like.

Is there a good quality raid card that has 6gbs speed? Or do I need the 3gbs?

Oh, and yes I do have my OS on a separate drive.
 
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