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Conclusion

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 The fastest array ever? We haven’t seen any other DAS solution reaching almost 2.3 GB/s throughput.

In theory, an array that consists of 16 flash SSDs capable of delivering 200 MB/s each should be able to get to 3,200 MB/s. Unfortunately, we remained far away from this number despite all optimizations, but we still managed to outperform Samsung’s flash SSD array. That array was powered by 24 PB22-J flash SSDs. We only used 16 Intel X25-E SSDs to reach higher numbers. The primary goal was to achieve a higher sustained sequential throughput, and we’re very pleased to have hit 2.23 GB/s with our X25-E RAID versus 2.12 GB/s for the Samsung PB22-J array.

Bottlenecks can most likely be found in CPU performance as well as farther down the platform in the storage controllers. Although the theoretical bandwidth of each PCI Express x8 interface should be 2 GB/s, real throughput numbers might be much lower.

Should you have feedback or recommendations as to how you’d try to improve performance, please let us know and comment on this article!

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xyz001 07/30/2009 8:11 AM
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-4+

how fast does it boot windows?

IronRyan21 07/30/2009 8:15 AM
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-6+

can toms give this away like the SBM! I have no idea why I would need this tho. :)

lutel 07/30/2009 8:20 AM
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-12+

how fast does it open solitaire ?

afrobacon 07/30/2009 8:24 AM
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chise1 07/30/2009 8:25 AM
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-13+

can we have some benchmarks that aren't just I/O performance? How about boot times and/or program load times?

dirtmountain 07/30/2009 8:36 AM
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-4+

You should always include a retail price tag for these articles. If it's in there someplace i missed it.

apache_lives 07/30/2009 8:58 AM
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-3+

Any non windows based benchmarks incase there is any sort of limit of throughput etc?

Windows does some funky things to hdd transfers - buffering things through ram and all sorts to find extra performance - wouldnt supprise me if that 2gb/s limit had something to do with software accessing the ram through the layers and windows subsystem etc

falchard 07/30/2009 8:59 AM
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apache_lives 07/30/2009 8:59 AM
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-1+

xyz001 :
how fast does it boot windows?



half of the start up time on the windows side (aka not including bios time) is the PNP initialization and network loading/waiting etc - check the hdd read light on high end systems

apache_lives 07/30/2009 9:00 AM
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falchard :
I am pretty sure the new Intel SSDs still don't have a good write speed compared to the Indolex controlled SSDs.



Every other spec Intel owns hands down like random writes etc which makes them the far better drive

cangelini 07/30/2009 9:25 AM
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-5+

dirtmountain :
You should always include a retail price tag for these articles. If it's in there someplace i missed it.



Dirt,
You're looking at close to $14k worth of drives/controllers :)

amnotanoobie 07/30/2009 9:31 AM
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-3+

Too bad my money tree couldn't buy me even one X25-E.

And yeah where are the application load times?

Ramar 07/30/2009 9:57 AM
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-0+

When/if I ever have enough people paying me for space on my server, I know what to do.

We've come a long way from "Loading..." screens in Half Life 2 every five minutes or less.

dean heart 07/30/2009 10:01 AM
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-5+

Gonna say it as well: Please benchmark application loadtimes; photoshop with different filesizes and ofcourse level loadtimes in Crysis :)

chyll2 07/30/2009 10:32 AM
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-4+

I wish they also have real-world results/benches. Im not that familiar with synthetic benchmarks.

al2950 07/30/2009 10:35 AM
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-3+

You will not be able to get faster speeds than that using 2 8x PCI-E. Even though the theoretical bandwidth is 2GB/s I have only even been able to get around 1.15GB/s, whwich is pretty close to what you are seeing. I would be interested to see what happens if you use 3 Raid controllers :), although i cant remeber how many total physical lanes are available on the X58 chipset

profundido 07/30/2009 10:36 AM
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ossie 07/30/2009 10:38 AM
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mitch074 07/30/2009 10:53 AM
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--2+

I wonder what performance Linux's ext4 file system would get out of that array... Since, after all, Windows (any version) is sorely lagging behind *NIX systems on I/O throughput.

tacoslave 07/30/2009 10:55 AM
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from what ive seen those are perfectly valid questions because we ARE reading because were curious. By the way most comments on toms arent retarded (flaming,fanboys = retard post.)Anyways I think most of us were thinking the same thing since most of us won't ever buy something like that. windows boot time = around 2 min for my pc
ultimate array = ?


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