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Simple Raid 0 Question - Page 2

post #11 of 22
Quote:
Originally Posted by the_beast View Post
Sorry but that's just plain wrong. Do you really believe that 7 year old drives are as fast as current-gen kit just because the rotational speed is the same?
Read my post again.
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post #12 of 22
Quote:
Originally Posted by Track View Post
Read my post again.
yep, read it again. Still wrong.

Rotational speed is a very poor indicator of drive speed - almost (but not quite) as bad as cache size. You need to match platter density, and the most recent 160GB drives have 320GB platters and use a single side of them, older drives have 4x40GB platters. Which do you think would be faster?
post #13 of 22
Quote:
Originally Posted by the_beast View Post
yep, read it again. Still wrong.

Rotational speed is a very poor indicator of drive speed - almost (but not quite) as bad as cache size. You need to match platter density, and the most recent 160GB drives have 320GB platters and use a single side of them, older drives have 4x40GB platters. Which do you think would be faster?
I know you are.

I said that a 160GB drive from 2004 would be about half as fast as today's drives, making 160GB RAID 0 worthless.

If only you asserted your clever wit into an actual deductive process.
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post #14 of 22
Quote:
Originally Posted by Track View Post
I know you are.

I said that a 160GB drive from 2004 would be about half as fast as today's drives, making 160GB RAID 0 worthless.

If only you asserted your clever wit into an actual deductive process.
I think you need to re-read my post.

The only section of your post I commented on was the bit about not bottlenecking because the drive is 7200 rpm.

If you actually read what others had posted and thought about it you might be capable of deductive process. Instead you're just posting garbage.
post #15 of 22
Thread Starter 
Quote:
Originally Posted by the_beast View Post
Sorry but that's just plain wrong. Do you really believe that 7 year old drives are as fast as current-gen kit just because the rotational speed is the same?
I think what he meant was that any HD I buy today wont bottleneck my 7 year old drive, which was my concern.
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post #16 of 22
Quote:
Originally Posted by jcrandall623 View Post
I think what he meant was that any HD I buy today wont bottleneck my 7 year old drive, which was my concern.
but the point is that your old drive will bottleneck any drive you can buy today, even cheap 160GB ones...
post #17 of 22
Thread Starter 
Quote:
Originally Posted by Track View Post
I know you are.

I said that a 160GB drive from 2004 would be about half as fast as today's drives, making 160GB RAID 0 worthless.

If only you asserted your clever wit into an actual deductive process.
Ok, BUT... My raid 0 will still basically almost double my HD speed, right? Even though it's slow, and raid is meant to be fast, it'll still be better for my current system. Is this correct?
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post #18 of 22
Quote:
Originally Posted by the_beast View Post
I think you need to re-read my post.

The only section of your post I commented on was the bit about not bottlenecking because the drive is 7200 rpm.

If you actually read what others had posted and thought about it you might be capable of deductive process. Instead you're just posting garbage.
Then I suppose induction is where you fail.

You must put all parts of my post together, grasshopper.
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post #19 of 22
Thread Starter 
Quote:
Originally Posted by the_beast View Post
something like a single Samsung F4 320GB (~$40) will be faster for 90% of day to day OS tasks than a RAID0 using older, low capacity drives. It really isn't worth doing the 'upgrade' you propose.
I'm negotiation to get a used 160GB 7200rpm drive for $10. I just want to speed up my 7+ (it might even be 8-9 years old) system. I went from single core 2.4GHz, 1GB 400MHz ram, onboard video, 280W PSU to my current system (OC'd dual core 3GHz, OC'd 2GB 856MHz ram, 8800GT, Antec 80+ 430w PSU, for $150.

I just want to make the system perfect for what it is. I feel like the HD might be holding it back.
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post #20 of 22
Quote:
Originally Posted by jcrandall623 View Post
Ok, BUT... My raid 0 will still basically almost double my HD speed, right? Even though it's slow, and raid is meant to be fast, it'll still be better for my current system. Is this correct?
This is a common misconception - RAID0 for many tasks is no faster than single drives. RAID only helps sequential performance, and your OS actually does very little of that. It does nothing for small random transfer performance, and can even slow it down over a single drive. Which means that even in RAID0, your older, slower drives will perform worse in day to day usage than single, more modern drives. When you run a sequential benchmark you will likely get similar speeds (~120MB/s max), but the IOPs rating of the array will likley be much lower than on a more modern single drive, and thus the 'snappiness' and general feeling of the computer in use will be worse.

There is also the problem of drive failure - running 2 old drives in a non-redundant array is asking for trouble without a backup, because if either of them fail (and remember they are getting old, and you have no idea what stress your 'new' drive has been through if you do go the 2nd hand route) you will lose all your data. As a result you should really have a full backup - which means buying a second extra disk, and therefore means spending the same money as you would need to buy a faster drive in the first place. So it just isn't worth it.
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