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Old September 20, 2010, 10:06 PM
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Default SSD-Raid to 1GB\s

Iím more confused than ever! Has been reading for two months now (still almost @ squire one)! I really like your site and your reviews! (Should find it sooner! My system never will be ready!) Iím trying to build a new system and would like to have at least 1GB plus WRITE and read speed in raid zero on the budget (under $1000 for SSD)! Iím really not concerned about the size just speed! Most mother boards have 2 x6GB and 6x3GB controllers! The 2x6GB is good for 2x2TB storage drive.
Is the onboard controller will give that speed?
Which configurations would give me the fastest WRITE-read speed at the lowest $s amount? (Get six of the budget SSDs or go with like the OCZ agility2 or vertex2)?
Could I kind of multiply the WRITE-read speeds per drive with Raid 0? (Exp. 6x250MBs will=1500MB\s)
I do copy and paste a lot (folder-folder than final to storage) 70% of the time 1 to 8GB files! But the 30% is killing me when the file sizes are very small and add up to few hundred MB or a GB!

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Ps. I will go with the I7-930 Cpu! MB is still up for grab!
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Old September 20, 2010, 10:28 PM
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No onboard RAID is capable of these speeds.

LSI 9211-8i RAID controller + 4-5 64GB Crucial C300s will what you need.

Although if you are reading/write large files all the time it makes very little sense to do w/ SSD's. A large mechanical drive array would make more sense.
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Old September 20, 2010, 10:38 PM
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Never mind doing it for a thousand bucks....
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Old September 20, 2010, 11:29 PM
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Thanks!
The LSI SAS 9211-8i host bus adapter provides the greatest available throughput to internal server storage arrays through eight internal 6Gb/s ports----$228. Good ideal!
$772 left for SSDs ! Crucial C300s 64GB capacities see 140MB/s and 75MB/s!I do not think they are will do it!
Asus Rampage III Etreme MB will not do the raid 0 with 6 SSD?
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Old September 21, 2010, 06:49 AM
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Quote:
Originally Posted by Just4Testing View Post
Thanks!
The LSI SAS 9211-8i host bus adapter provides the greatest available throughput to internal server storage arrays through eight internal 6Gb/s ports----$228. Good ideal!
$772 left for SSDs ! Crucial C300s 64GB capacities see 140MB/s and 75MB/s!I do not think they are will do it!
Asus Rampage III Etreme MB will not do the raid 0 with 6 SSD?
Intel's southbridge is bottlenecked by the DMI link, so 1GB/s isn't remotely possible. I've heard reports of peak bandwidth at about 600MB/s, but even that's just synthetic. I know AMD's newer southbridge's have a higher throughput, which might give you a fighting chance, but you really should be looking at a proper raid controller with a PCI-E 2.0 x8 interface..

Although I think you're dreaming with a budget of only $1000.
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Old September 21, 2010, 10:42 AM
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The C300 64GB drives are actually capable of 350MB/s reads. Didn't realize their write speeds were so low though. Then yes it is impossible to get 1GB/s read/writes for under $1000. You could switch to 60GB Vertex 2's. But even w/ 5 of them you won't break 700MB/s writes and 1200MB/s reads.
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Old September 21, 2010, 11:19 AM
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Quote:
Originally Posted by MpG View Post
Intel's southbridge is bottlenecked by the DMI link, so 1GB/s isn't remotely possible. I've heard reports of peak bandwidth at about 600MB/s, but even that's just synthetic. I know AMD's newer southbridge's have a higher throughput, which might give you a fighting chance, but you really should be looking at a proper raid controller with a PCI-E 2.0 x8 interface..

Although I think you're dreaming with a budget of only $1000.
I agree MpG, there are a more links in this "chain" than the controller/HDD's

- 8x PCIe is a must, the LSI has that. It has no onboard memory tho, so the burst rate will be lower compared to a hardware controller with a RAID5 chip.
- the hard drives in concert will do the reading in theory, dunno about write
- the desktop chipset will be a bottleneck

A server board with xeon class chipset might be what takes this I/O subsystem to the next level... a desktop class chipset might peak at 400~600 MB/s. Your $1000 budget won't cut it.
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