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Brainstorming about 2,5" HDD's

post #1 of 10
Thread Starter 
So I've been thinking about getting a 5,25" bay that houses 6 2,5" drives. In this I would place just some 2,5" drives ~250Gb 5400RPM and put them in RAID5.

Do you think this would get some good performance? I've been thinking about it and I think it would work nicely. I don't care about storage because thats what my HTPC is for.

Also, I shall be using my onboard RAID controler for this since I don't have room for a RAID PCI(-e) card.

What are your thoughts?
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post #2 of 10
My thoughts are: high heat, high latency, lots of noise, not really faster than a couple of 7200rpm drives in raid - just get a Vertex 3 or something similar, it will be by far faster and use significantly less power

You also have to remember that laptop drives aren't meant to be put into raid like that and may drop out of the array causing issues, and they usually don't have much on board cache which will hurt as well.
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post #3 of 10
Thread Starter 
Quote:
Originally Posted by appleg33k85;13892297 
My thoughts are: high heat, high latency, lots of noise, not really faster than a couple of 7200rpm drives in raid - just get a Vertex 3 or something similar, it will be by far faster and use significantly less power

You also have to remember that laptop drives aren't meant to be put into raid like that and may drop out of the array causing issues, and they usually don't have much on board cache which will hurt as well.

Heat, dont care.
noise, dont care.

High latency? Not much more then average disks, plus 5400 vs 7200 wont be that much of a noticeable difference. But 5400 are cheaper, less noise and less heat. Just because they are 2,5" doesn't mean they are laptop disks and if they are... why wouldn't it work in RAID? The RAID is done by the southbridge not the disks them selfs. The same bay could house SAS disks which I can easily obtain from work. biggrin.gif
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post #4 of 10
It has to do with both the firmware of the drive and of the raid controller - if you look around you'll see that plenty of people have issues with non raid disk dropping out of a raid array, not saying that it will 100% happen, just one thing to think about.

Even though you might not care about heat, it severely decreases the life of a hard drive with more heat. The more disk that you put into an array the higher the latency, besides the fact that 5400rpm drives have higher latency and access times over their 7200rpm counter parts.

For storage 5400rpm vs 7200rpm isn't that noticeable [on desktop drives as they have cache to make up for the slower speeds, laptop or 2.5" drives don't have as much cache]- when you're talking access times and raw speed spindle speed has a noticeable effect, thus why 10k rpm drives are super expensive more expensive and were the thing to go for when looking for raw speed [before SSD's].

I'm not saying that you should / shouldn't do it, I'm just giving you all the information. I'm not really aware of any desktop class 2.5" drives as most are laptop drives which also can be used in a desktop, although I'm not the end all / be all of everything hardware out there smile.gif
Edited by appleg33k85 - 6/16/11 at 4:40am
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post #5 of 10
You will still get more performance out of a single Vertex 3 or similar.

And in general 2.5 inch drives only get about 50mb a sec in benchmarks, compared to 80-120mb of a WD/Seagate standard drive.

Just get your self a SSD and a 2TB black.
post #6 of 10
Quote:
Originally Posted by SpeedNuggeT;13892481 
You will still get more performance out of a single Vertex 3 or similar.

And in general 2.5 inch drives only get about 50mb a sec in benchmarks, compared to 80-120mb of a WD/Seagate standard drive.

Just get your self a SSD and a 2TB black.

This.

Grab an SSD & a Green storage drive. Still fits in a single 5.25" bay but costs less and provides more space and performs better across the board.
post #7 of 10
Quote:
Originally Posted by SpeedNuggeT;13892481 
You will still get more performance out of a single Vertex 3 or similar.

And in general 2.5 inch drives only get about 50mb a sec in benchmarks, compared to 80-120mb of a WD/Seagate standard drive.

Just get your self a SSD and a 2TB black.
I can verify this. I'm running my C:\ off of a laptop drive thumbsdownsmileyanim.gif
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post #8 of 10
Once you go SSD, aside from storage there is NO reason to ever go back.

Seriously, its like the first time you opened your favorite game once you installed a video card coming from onboard video.

For todays computing the concept of waiting on a spinning drive to find the data we want seems "archaic" .
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post #9 of 10
Quote:
Originally Posted by Zippit;13892351 
Heat, dont care.
Your drives will.
You also will when you're replacing a RAID member every couple months, assuming another one doesn't die when you do a RAID rebuild that maxes out your disks for a few hours on end.
Quote:
5400 vs 7200 wont be that much of a noticeable difference
The difference is ENORMOUS as you do not have the luxury of additional edge-of-platter velocity from a 3.5 drive
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post #10 of 10
Quote:
Originally Posted by Desertman123;13911386 
I can verify this. I'm running my C:\ off of a laptop drive thumbsdownsmileyanim.gif

Yeah, some of those laptop drives are brutal. I was shocked that there's more than a 100% performance difference between the best and worst laptop drives still sold.
Quote:
Originally Posted by SpeedNuggeT;13892481 
Just get your self a SSD and a 2TB black.
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