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Is raiding SSD worth it?

post #1 of 55
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Hello everyone... I was planning on buying either a second duplicate agility 3 240GB or buy 2 ~500GB SSDs to raid them in Windows 8.1

Then a friend said "it's down right stupid unless you have a queue depth of over 8".

Thing is I remember a long time ago that I saw a review for those dual and quad PCIe SSDs from OCZ and they showed significant improvements in program load speed and raw transfer rate.

So is it worth running 2 drives? Also I want to be straightforward that yes I know the lifetime will be decreased and that I simply do not care since it will still last longer than I'll have it.
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post #2 of 55
dude, your asking on pc performance forum if you should spend money to make things faster.....

short answer, if you can afford then why not.

is it worthwhile, not really
will it be faster, a little
post #3 of 55
No. RAID0 improves sequential performance and marginally anything else.

Being the case with consumer workloads, you are rarely saturating the sequential read/write. If you are, it might be for less than a second
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post #4 of 55
It's not worth it. I tried it out, better of using 1 larger SSD.
post #5 of 55
2x 250gb vs 1x 500gb? Go with a sigle drive, not worth the hassle, i had 4x ssd in RAID 0 before.
post #6 of 55
I'm enjoying the performance of 2 of mine in RAID 0 but each to their own. Do whatever floats ya boat. thumb.gif
post #7 of 55
My ASUS G750 laptop has two Samsung 840 Pro 256GB in it in RAID 0, not necessarily because I wanted a performance boost, but because I wanted a 512GB logical volume instead of two 256MB volumes. That, and it shaved my boot time from 10 seconds to 7. =)

I get almost 950 MB/sec sequential throughput and very little loss in IOPS. I say there's no harm in doing it, though it increases your risk of data loss by 100% due to having another storage device in the mix. My laptop carries no critical data at all, so I'm not concerned about data integrity or security.

Greg
post #8 of 55
Quote:
Originally Posted by DuckieHo View Post

No. RAID0 improves sequential performance and marginally anything else.

What about IOPS?
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post #9 of 55
Quote:
Originally Posted by Oubadah View Post

What about IOPS?

Random 4K read IOPS at QD1 will be the same (or slightly lower). Read IOPS at high queue depth and write IOPS will increase. That said, typical consumer workload is unlikely to reach high queue depth so you probably won't notice an improvement. As mentioned, you increase the risk of data loss (albeit not anywhere near 100%).
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post #10 of 55
Quote:
Originally Posted by rui-no-onna View Post

Random 4K read IOPS at QD1 will be the same (or slightly lower). Read IOPS at high queue depth and write IOPS will increase. That said, typical consumer workload is unlikely to reach high queue depth so you probably won't notice an improvement. As mentioned, you increase the risk of data loss (albeit not anywhere near 100%).

Yup, consumer workload queue depths are generally in the range of 1-8.
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