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gloss

macrumors 601
May 9, 2006
4,811
0
around/about
Josias said:
I saw this in a local magazine few days ago. This thing weighs more than the 17" iMac. BTW, why would they bother putting in two 2.5" HDD's instead of 1 3.5" HDD. Largest 2.5" available is 200 GB. Largest 3.5" is 750...:p

RAID.
 

Josias

macrumors 68000
Mar 10, 2006
1,908
1
Eidorian said:
Redundant Array of Independent/Inexpensive Disks

OK, but what does it do? I don't know what redundant means? I guess RAID is where multiple disks works as one right?
 

MattyP

macrumors member
Dec 13, 2005
71
0
San Francisco
bbrosemer said:
Its actually for self conscious people who think they need to lose weight, so rather then carrying around a 6lb Mac, they are going to carry around the extra 17lbs in hopes that it will help them lose weight.

Or maybe they just think the size of the laptop will make them look smaller in relationship to it:rolleyes:
 

MattyP

macrumors member
Dec 13, 2005
71
0
San Francisco
Josias said:
OK, but what does it do? I don't know what redundant means? I guess RAID is where multiple disks works as one right?

Redundant means that there are more than one thing fulfilling the same function. A Raid setup constantly backs up data and then backs it up again on a group of harddrives, incase one fails there is always an extra copy.
 

gloss

macrumors 601
May 9, 2006
4,811
0
around/about
MattyP said:
Redundant means that there are more than one thing fulfilling the same function. A Raid setup constantly backs up data and then backs it up again on a group of harddrives, incase one fails there is always an extra copy.

There are several variations on RAID. The two most common are RAID 0 and RAID 1, which are data striping and data mirroring, respectively.

Data striping writes half the data to each disk simultaneously, doubling the data transfer rate. It means lighting fast load times, etc, but also doubles your chances of a hard drive failure, since if once disk goes, all the data is useless.

Data mirroring just creates a real-time backup onto a second disk, so if one HD goes down you still have everything on the other disk.

There's also concatenation, which lets you take several hard drives and have the system view them as one large drive.
 
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