Storage Experiment Progress - 7 Drive RAID 0 with a 512GB SSD Cache Linus Tech Tips
Linus Tech Tips
·Linus Tech Tips
·2013-05-07
·
696 words · ~3 min read
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time for a super crazy raid testing
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setup going on so thing that I got going on so here I have seven Seagate
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Barracuda 3 tbte desktop drives um and I
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have one Samsung 512 gig 830 series SSD
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so what I'm going to be doing with these is I have a new raid card here from adaptech this is their
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6805 TQ so it includes a super capacitor
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or whatever it is they call it basically it's it's kind of like a battery backup
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in that it will allow anything that is cached to be written but it is not an
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actual battery so it's a slightly different technology one thing to be careful of with these things is you
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don't want to plug them in or unplug them when they are charged they ship
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discharg so you can plug them in before you install it but just be aware of that
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you can mess stuff up so there's the raid card there this supports adap teex
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Max cash 2.0 so the difference between Max cash and Max cash 2.0 is that Max
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cash 2.0 supports random ssds it also
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supports much larger ssds than consumer Technologies like Intel SRT so I want to
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take this massive raid array I'm going to do the whole thing in raid zero
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striped so that means there will be no fault tolerance but we will be getting
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pretty much as much performance perance as you can get from a single single raid
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card with a reasonable number of drives I mean even this number of drives is kind of unreasonable so this 512 gig
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cache will be caching 21 TBT of
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mechanical storage I want to test this we're going to have an upcoming NCI Tech
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tips on this I want to test this against
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some sort of more modern configurations to see what we can potentially do with
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the future of storage compared to a single SSD today a single hard drive
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today or a h solution like a momentus XT
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today so here I'm configuring my Max Max
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cach SSD caching so I've added one SSD
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to the pool you can obviously add as many ssds as you want to the well no I
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think it's actually got a limit
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um whatever it's done now so here you can see my finished configuration I've
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got my RAID zero set up with my yeah
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raid zero cached with 19 plus terabyt so that's 21 terabytes
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depending on how you measure it come on Focus please raid zero okay and then
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I've got my SSD set up as a cache so I am ready to run some performance
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performance benchmarks I'm going to be using PC Mark and doing several runs
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because I'm going to be comparing it against some other configurations to see
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how it B how it uh how it performs at first and then how it performs in
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subsequent runs with the caching enabled as the controller learns so uh stay
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tuned for the NCI Tech tips on that and thanks thanks for checking out this
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configuration process for maxc 2.0 so
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the eight drives hooked up to the adapt Tech controller are these eight these
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eight right here are in raid six on the
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orka controller and I might as well Benchmark that while we're at it just
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for comparison and then these two are just AR raid one for the OS backup for
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Windows Home Server so uh don't forget to subscribe K detectives for more
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unboxings reviews and other computer videos oh actually here's one more thing
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guys sorry as I'm getting into my benchmarking here I noticed something
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cool so that is that it actually gives you a readout of the uh the overall
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usage of your rate array which is very cool so I can actually monitor how much
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the SSD cache is affecting how things go in fact there's the D statistics I/O and
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Max cach statistics right there very cool stuff