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Why is RAID so fast? - Page 4

post #31 of 37
Quote:
Originally Posted by kdbolt70 View Post
Heh, you guys needn't keep fighting over my incorrect description, I said theoretically to basically get across the fact that it should operate at twice the speed of a single 7200 rpm drive. Obviously connecting drives together doesn't make the spindle spin faster, but allows you to collect or write a fixed size of data faster then on a single raptor.
Correct... I am just saying spindle speed is non-important in RAID theory.

Stating it like that makes more sense since you are comparing HD performances and not spindle speed now.
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post #32 of 37
SPINDLE SPEED affects HD Performance.
HD Perforance affects RAID
SPINDLE SPEED --> HD PERFORMANCE --> RAID.
Thus, spindle speed affects RAID.

It's like saying cold air intake helps a motor in a car.
The motor gets the direct "assist".
But the car, overall, gets the real gain.

Can we be done with this now? Did that make sense Duckie?
    
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post #33 of 37
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post #34 of 37
Quote:
Originally Posted by dpawl31 View Post
SPINDLE SPEED affects HD Performance.
HD Perforance affects RAID
SPINDLE SPEED --> HD PERFORMANCE --> RAID.
Thus, spindle speed affects RAID.

It's like saying cold air intake helps a motor in a car.
The motor gets the direct "assist".
But the car, overall, gets the real gain.

Can we be done with this now? Did that make sense Duckie?
Yes. Here is what is absolutely wrong: "7200x2 rpm theoretically".

Also, when talking about RAID to someone new.... I would not mention spindle speed. This is my point.
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post #35 of 37
Quote:
Originally Posted by ElMikeTheMike View Post
Not really, I am not an actor.
I hate that show

Duckie: I see your point - spindle speed is not that important.
But I just need to know - do you see my point? That spindle speed does affect RAID?
If there were two raptors in raid, with the same seek speeds etc as a 7200 drive, the RAID raptors w/ raptor specs (vs 7200 specs) would be better. Right? The spindle speed DOES have a part to play. I wouldn't even call it minor. But seeing as they don't make Raptors with 8.5ms seek times... lol.

I just need to know you are understanding where I am coming from.
    
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post #36 of 37
Quote:
Originally Posted by dpawl31 View Post
Not really, I am not an actor.
I hate that show

Duckie: I see your point - spindle speed is not that important.
But I just need to know - do you see my point? That it IS a factor in RAID?
If there were two raptors in raid, with the same seek speeds etc as a 7200 drive, the RAID raptors w/ raptor specs (vs 7200 specs) would be better. Right? The spindle speed DOES have a part to play. I wouldn't even call it minor. But seeing as they don't make Raptors with 8.5ms seek times... lol.

I just need to know you are understanding where I am coming from.
Yes, I understand where you are coming from... but do you see what I mean...

Barracuda 7200.10 RAID come close (or beat) 10K Raptors. Why? It has increase data density. Therefore, you are really comparing performance of the drives and not spindle speed. 7200.10 vs 7.2K Caviers... 7200.10 win because of performance. Spindle speeds are the same.

Raptors perform better due to their spindle speed. However, when comparing a 7200 drive to another... firmware, platter count, and data density matter. Therefore, it is not recommended to compare HDs solely on spindle speed. I am just trying to make it more explicit.
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post #37 of 37
Quote:
I am just trying to make it more explicit.
Except this guy had no clue what RAID was, nevermind HDD density, platter, spindle speed etc lol

for agreement!
    
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