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Single vs Dual

post #1 of 6
3/4/05 at 2:22am
Thread Starter 
This may be a beginner questions but here it goes:
What difference does it make, single HD configuration vs. Dual? What is better?
And while we are at it, one of you engineers out there, what is RAID 0, 1, 2 ?
Thanks.
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post #2 of 6
3/4/05 at 2:36am

RAID - Redundant Array of Independent (or Inexpensive) Disks

Here’s a couple lengthy threads about RAID that may help...

http://notebookforums.com/showthread.php?t=60149
http://notebookforums.com/showthread.php?t=58667
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post #3 of 6
3/4/05 at 3:06am
Here's a some tech reviews and illustrations about RAID...

http://www.acnc.com/04_01_00.html
http://www.storagereview.com/guide20...aid/index.html
http://www.anandtech.com/storage/sho...spx?i=2101&p=1

Quote:
RAID 0 (Striping) - RAID 0 combines two or more physical hard drives into a single logical drive. Data is striped (distributed in blocks during writing) across all drives, giving you a single logical drive with a capacity equal to the sum of the capacities of all drives used. RAID 0 increases performance by spreading data onto multiple drives, though it does so at the expense of reliability. Because data is distributed across all disks, if one disk in the array fails, the result is the same as if all had failed: total data loss.

RAID 1 (Mirroring) - RAID 1 involves one or more physical drives being exactly duplicated on other physical drive(s). Any data written to one drive or set of drives is written to its "mirror" drive or set, providing an exact duplicate of the original drive(s) on the mirror drive(s). RAID 1 provides increased reliability through data redundancy; in the event of a drive failure, a copy of all the data from that drive exists intact on that drive's mirror. Of course, this peace of mind comes at the expense of storage space. Since all data is stored twice, total storage capacity is equal to only half the total capacity of the drives in the mirror.

http://www.techreport.com/reviews/20...d/index.x?pg=1
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post #4 of 6
3/4/05 at 4:09am
here is a suggestion about raid .. go read some threads instead of cluttering up the forum with post that have been posted over and over already.
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post #5 of 6
3/5/05 at 3:44pm
Raid 0 will offer no real performance increases; it will maily allow for 2 X 60 gigs to show as 1 X 120 gig HD. Which IMO is nice.
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post #6 of 6
3/5/05 at 6:02pm
Hi Tyler,

RAID 0 does have uses (even got Astu to admit it). Primarily if you're running apps that do a lot of IO, then RAID 0 will speed things up quite a bit. Go to the thread in Alienware genral titled "Well, it's come to this".
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