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learn more Welcome to our NAS drive Roundup so we've got two contenders the
WD red which is the original Nas optimized consumer grade hard drive and
then we've got the newcomer the seate nas hard drive so what they both have
going for them is longer warranty periods than a typical consumer grade
device 247 tech support as well as a
247 rated uh sort of operational
workload that's that's what they're designed for to actually be used all the
time in a storage Appliance they're both optimized for smaller rating closur so
for example the red is good for anywhere from one to five Drive arrays and
there's a reason for that because as much as I have always used just regular
desktop drives in nases both seate and WD have lectured me about this because
they're like well actually the vibrations that are passed between the drives um can be a problem in the longer
term particularly when you pile more and more drives into an enclosure so having
drives that are optimized for resisting any errors that might be caused by that
vibration is definitely a positive positive thing the one key difference
between these drives is that the WD red does tend to be a little bit more
expensive on retailer shelves and is only available in a 3 tab capacity up
till now and performance of these drives in Nas enclosures is very much an
unknown at this point not too many people have really looked into it so we
decided to take a sonology ds411 so this
is their disc station quad Bay enclosure
we set up a raid five in there with either four of the red 3 terabytes or
four of the Seagate NAS drive 4 terabytes and decided to run some
benchmarks because many people are looking at these NAS Drives going oh
well they only run at 5400 or 5900 or
whatever sort of Eco optimized RP M CU remember in a Naas enclosure you want
less power consumption and you want less power consumption did I say power
consumption twice because what I meant to say was heat output for the second
thing you want less of both of those things so running at a lower RPM does
help achieve that but what does that do to Performance well I'll tell you what
we were expecting to happen is we were expecting the land interface right there
that gigabit land interface to be the first bottleneck even running in
something like a raid one configuration which is two Drive redundancy no
calculations we are looking at about I mean we're looking at a maximum of 80 to
100 megabytes perss transfer speeds if we're running in something like a raid
five for rights we'll be lucky to get 25 to 35 megabytes per second right speeds
which means that a 5900 RPM Drive can keep up just fine so the other
bottleneck like I said in raid five is going to be internally here the
processor raid five is very calculation intensive so basically what you do is
you have at least three drives and one one of the drives worth of space is
allocated for a parody bit which is pretty much a song that someone designs
to sound like another song and then they actually Chang the lyrics to make it
more comical no no not that kind of parody the real parody is data that can
be used to reconstruct the data on the other drive so it's extremely
computation intensive when it comes particularly to writing data to a r
array anyway without further Ado I'm going to put some charts and graphs up
on the screen that'll give you guys some idea of the performance differences we
observed which I think really backs up our hypothesis in a very big way we ran
several different tests including real world small medium and large file copy
tests and all of these numbers are reported in the time it took to complete
the operations with either different set of drives and then we also ran black
Magic's dis speed test which we've found to be a fairly reproducible and just
kind of a quick and dirty Benchmark so that gives you a synthetic Benchmark as
well as a real world Benchmark to show you that we really didn't observe a
difference in performance between these drives so with no real performance
difference between the drives how do you pick which one to go with and I think
the answer is that it comes down to trust who do you have the best experiences with over the longer term or
the people you know or whatever else do you want to pay more for the WD or do
you want to pay less for the Seagate or do you need the 4 tab capacity that's
available in the seate WD doesn't have a 4 TB red yet so there's all those things
to consider I know slick just recently purchased just four of the 3 terab WD
Reds for a personal raid array um so
that should give you some idea what we think of the red particularly internally
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check it out right now thanks for watching this episode of Linus Tech tips
on NAS Drives versus other more different NAS Drives and how per
performance- wise it basically doesn't make a difference don't forget to
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