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Two; RAID. Still not sure what that can do for me. You say it has something to do with using two hard drives.
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Okay, just to give you a RAID primer:
RAID 0 - Striping/Concatenation
The data is broken up and stored across multiple drives
PLUSES:
The ability to read from all drives at the same time, potentially increasing the read throughput by the number of drives in the stripe.
You get to utilize ALL of your disk space.
MINUSES:
No redundancy. If one drive fails, ALL of the data on both drives is lost.
RAID 1 - Mirror
Hard drives are duplicated on other hard drives.
PLUSES:
If one drive fails, the mirror takes over automatically.
Because the same data is written to two drives, this gives the ability to read from both drives at the same time, potentially doubling the read throughput.
MINUSES:
You lose 1/2 of total disk capacity as the other 1/2 goes to the mirror.
RAID 5 - Stripe with Parity
Data is borken up like a stripe with one disk's worth of storage taken to store a parity bit.
PLUSES:
If one drive fails, the RAID still continues using the parity. You only lose one drive (called "N-1") to parity, regardless of whether you have three or thirty drives in the RAID.
The more drives that you have, the more data you can read from the hard drives in a single read request.
MINUSES:
Slower because the hardware needs to calculate that parity bit. When a drive fails, the system will be even slower as the parity bit will need to be calculated for reads AND writes.
Failure of more than one drive results in the loss of the whole stripe.
Requires a minimum of three drives.
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Would it be worthwhile to get two smaller drives rather than the 120? I'm more interested in speed than space.
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Technically, yes. More spindles (hard drives) + RAID 0 = faster throughput. However, this assumes that the lower capacity drives are the same speed as the 120.
For example, if you get two 60 GB drives that have a transfer rate of 33 MB/sec, that gives a potential RAID 0 throughput of 66 MB/sec. But if the 120 GB drive with serial ATA has a transfer rate of 66 MB/sec or more, then it's not worth the effort to do the RAID.
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in case I'm making a complete NOOB error
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Contrary to popular opinion, there is nothing wrong with being a newbie. We were all newbies at one point, even those f**king morons who act like they knew their stuff before even coming out of the womb. Even if you make a mistake, you learn and move on.
