Discussion Forums > Technology
RAID controller to boost IOP
nstgc:
@kmarch: It seems as if the Adaptec cards are more cost effecient. At the sub $200 rage they are all the same, but in the $250 - $350 range, Adaptec's seem better. In both cases both companies (as well as LSI and 3dware) seem to use real RAID (as in they have their own RAM and processor).
@per: I'm going to be using this for a desktop. I don't need IOPs. The reason I was asking about IOPs is as a means of seperating out cards that work with cards that work well. Also, since this is a desktop (running games and playing 1080p videos) I can't have the RAID eating up CPU time. Additionally, being able to move the RAID from one computer to another is very useful. I also like that many hardware RAID cards come with onboard RAM and the benchmarks I've seen show that for files smaller than the RAID cache, the limiting factor is the bus. So, for example, with a Adaptec 6405 (what I'll almost certainly get) I should be able to get 4GBps (and I expect 2.5) for files smaller than 512MB.
kitamesume:
theres two reason why software raid would work on you better than what you thought it would, one is software raid hardly cost you anything and is no different than a cheap fake raid card, the other reason is that software raid is pretty much more safe than cheap fake raid cards and they're at the least hassle free. though a real raid setup is still the most effective.
a simple explanation for that is that a software raid itself is a software, thus avoiding hardware failure that could lead to "you know whats" and the fact that it is at software level so it will perform as if it was using your ram as a buffer and effectively using your sata controller. most likely the bottleneck would be placed on only two stuffs, which is your sata controller and your software itself. if your sata controller was slow to begin with then it would be performing according to what your sata controller can do. the software on the other hand, is how efficient and effective it manages your software raid, it should be at least faster than your combined drives.
PS: software raid doesn't insanely hog pc resources, mostly 10% at average during read/write operation. (on a dual core pc with 2ghz speed)
short note: if you have a slow pc to begin with, a raid setup wont do you much good, let alone investing on a $500+ real raid setup.
i suggest trying them both if you have them, and compare which performs better and which suits you better.
Edit: one question, what are you doing to make you move huge files so frequently? editing maybe?
Freedom Kira:
--- Quote from: nstgc on May 28, 2011, 01:44:10 PM ---Intel doesn't make chipsets for AMD motherboards.
--- End quote ---
I realize that, but if you don't use AMD, I don't see how this is a problem.
--- Quote from: nstgc on May 28, 2011, 02:09:22 AM ---@Freedom Kira I don't use AMD processors.
--- End quote ---
Maybe by "don't" you meant "only?"
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