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Future Hard Drive Upgrades

post #1 of 10
Thread Starter 
At the moment I have a single 2TB Hitachi drive(64MB cache/7200) and a old 320 GB Seagate that used to be a desktop external, but when I built this I ripped it out of its enclosure and put it in my computer.

With that said, I'm looking for the best upgrade path for speed/access times that I plan on purchasing in the next few months and wanted some input and opinions on where I should be looking at. Right now, I have in mind that I'll purchase a 120GB SSD for my OS/a few games then get a second Hitachi 2TB and throw those two into Raid 0 while keeping my Seagate 320GB as just a extra small media/backup drive.

Any other ideas would be appreciated, like I said.... speed/access times is what I'm shooting for!

post #2 of 10
Then I would be looking for some WD Blacks or some Samsung F3R's if you're looking for speed out of 7200RPM drives.
post #3 of 10
Thread Starter 
Quote:
Originally Posted by mbudden View Post
Then I would be looking for some WD Blacks or some Samsung F3R's if you're looking for speed out of 7200RPM drives.
Actually I picked up the Hitachi 2TB drive because it showed faster speeds than the Blacks/F3Rs when I purchased it. I'll look around to see if I can find the tests that I found a few months ago. Would like to see someone else's WD black, F3R and compare results as well. Note, it must be their OS drive though.
Edited by Doogiehouser - 6/19/11 at 9:45am
post #4 of 10
Personally the WD Vraptors are pretty good drives.I do have some WD blacks and love them.If your looking for speed then a SSD is the choice.For the price of a SSD you can pick up 2 WD Black 640's and get some great speed.
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post #5 of 10
Right now I'm using a WD VelociRaptor 300GB 10k RPM for my OS drive. I eventually want to upgrade to an SSD.

For storage I'm using 2 Samsung F3 1TB in RAID 0 and 1 Samsung F4 2TB for a backup drive in external enclosure. I love them, they're fast as hell. Have you run any benches on your Hitachi yet? I'd be curious to see if they're actually faster than the Samsungs. From what I've seen, for their size the Samsungs are the fastest.
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post #6 of 10
Thread Starter 
Quote:
Originally Posted by LastBucsfan View Post
Right now I'm using a WD VelociRaptor 300GB 10k RPM for my OS drive. I eventually want to upgrade to an SSD.

For storage I'm using 2 Samsung F3 1TB in RAID 0 and 1 Samsung F4 2TB for a backup drive in external enclosure. I love them, they're fast as hell. Have you run any benches on your Hitachi yet? I'd be curious to see if they're actually faster than the Samsungs. From what I've seen, for their size the Samsungs are the fastest.
I'll run one right now, like I said though... it has my OS on it so it will be slightly slower than a drive without the OS.

Edit:




Edited by Doogiehouser - 6/19/11 at 10:00am
post #7 of 10
Looks like its about the same as my F4 2TB over USB 3.0.



My F3's in RAID0 are twice as fast. =)
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post #8 of 10
Quote:
Originally Posted by Doogiehouser View Post
Actually I picked up the Hitachi 2TB drive because it showed faster speeds than the Blacks/F3Rs when I purchased it. I'll look around to see if I can find the tests that I found a few months ago. Would like to see someone else's WD black, F3R and compare results as well. Note, it must be their OS drive though.
Quote:
Originally Posted by Doogiehouser View Post
I'll run one right now, like I said though... it has my OS on it so it will be slightly slower than a drive without the OS.
The HDTune benches look more like a Green drive. High access times. Also, you didn't run the full second test...

What you have to factor in is how much of the access time is seek time, and how much is reading/writing to/from the file.

Take your drive - high sequential speeds, but also high access times. It can read on average 118MB/sec, or 118KB/ms. To find the access time for a 1MB file, divide 1MB by the sequential speed and add the access time.

15.9 + (1000/118) = 15.9 + 8.68 = 24.6ms (and yes, HDTune speeds are in Metric - 1000 rather than 1024)

Now take my WD Black: (which, btw, is way slower than a 2TB Black)




12.4 + (1000/94.6) = 12.4 + 10.57 = 22.97ms

So my WD Black is actually faster than your drive for reads under 1MB in size. If you run the full second test, it should corroborate this.

Also worth noting - when I once tested the drive on an Intel controller, the access times dropped another 0.5ms. (So it's more like 22.47ms - maybe less on your sweet board)

Now, lets calculate it out for a WD Black 2TB:



Technically these access times are not correct, since earlier HDTune versions only tested the first 1TB of a drive.

12ms + (1000/111.6) = 12 + 8.96 = 20.96ms

Clearly the 2TB Black is fastest for any reads under 1MB.

But of course, even these numbers don't tell the full story... there are two other factors to access times, that need to be considered. One is RPM (the one everyone knows about), and the other is relative seek distance. In general, larger drives feel faster partly because the head has to seek a smaller distance physically. If my 640GB Black has to read a file 500GB in, it seeks 78% across the platters, which means the access time is going to be quite bad. (higher than the average) For your Hitachi 2TB, it would only be seeking 25% across the platters. (so it'll be lower than the average) Because of this, your drive may feel fairly fast when empty - compareable to mine when it's filled to the brim.

To chart this out, I did a whole bunch of tests: http://www.overclock.net/hard-drives...different.html

The first tests reveal the avg sequential performance depending on where the data physically lies on the platters. Closer to the edge = Faster. It also reveals the avg access times depending on distance - when restricted to a 16GB region, for example, my drive only has a 6.8ms access time - if you performed similar tests, you'd find WD Blacks are far faster at reading/writing files close together.

The second tests show the kind of performance acquired when you factor in seeking distance. Tons more time is spent actually reading/writing (rather than seeking) when you keep all your data within ~10% of each other. The performance difference between a full drive or a lightly used one is close to 60%.




Anyway, a WD Black 2TB (with its dual-actuator tech) would stomp all over my 640GB Black in both short and long seeks. And because of its capacity, almost all seeks are going to be the short variety. In reality, your drive probably performs about the same as my 640GB Black (Or a bit better, since I filled 95% of it), and a 2TB Black would perform significantly better - probably about 40-50% faster until filled to the brim.

My 2 cents.
Edited by Kramy - 6/19/11 at 6:06pm
     
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post #9 of 10
Thread Starter 
Some good info there, thanks. With that I'll most likely use my Hitachi 2TB as a backup/media storage. Then get a ~120GB SSD and a couple 500-1TB Hard Drives to put in raid 0. How many drives can I put in raid 0? Could I essentially put 3-4 500GB drives in raid 0 to increase performance?
post #10 of 10
Quote:
Originally Posted by Doogiehouser View Post
Could I essentially put 3-4 500GB drives in raid 0 to increase performance?
Yep, you could. There's actually some people here on OCN that do exactly that. It's mostly beneficial to sequential performance, but it'll definitely make a difference all around.
     
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