Originally posted by Bads@Mar 3 2004, 07:34 PM
What is the purpose of a raid ? Just want to know
Thanks
http://www.poweroid-video-editing.co...age/RAID_0.asp
Read it!! :P
So raid is a very good thing. Was using a hardware raid 0 but damn motherboard drive so now having to use software raid 0. Even had a RAID 0 + 1 for awhile. Was very very very nice. Untill damn harddrive died.
Microsoft talks about software raid and below.
Hardware is of course the best. So your motherboard needs to have support or you need to buy a RAID controller.
RAID 0
RAID 0 is simply the combination of two or more hard disks to appear to the computer as one large hard disk. It's also called striping. You could take two 250 GB hard disks, set them up as RAID 0 and the PC will see them as a single 500 GB hard disk. Once that is configured and setup for all practical purposes the PC will behave like there is only one 500 GB hard disk in the machine.
The main advantage of striping is the extra speed that you will get. Writing to hard disks is the bottleneck in most modern PCs. However with RAID 0 the writing is split across two drives, and the PC is writing simultaneously to both; that does speed things up. You won't get 100% speed increases but 20-30% is quite possible.
The main disadvantage is that there is double the risk of a hard disk failure. You need only one of your two drives to go faulty and you've lost all your data.
RAID 1
RAID 1, also called mirroring, is setting up the two disks such that the second one mirrors the first providing you an up to the minute backup if something ever goes wrong with the first disk. Should the first hard disk fail you simply remove it, put the second disk in it's place and carry on where you left off.
RAID 0 + 1
You could have a combination of RAID 0 and RAID 1 to provide both the speed and the security. You will, of course, need several hard disks for this.
RAID 1.5
A new concept but the jury is still out on this one. It may give you slightly higher read speeds but write speeds don't benefit.
Best one I can find.
Check it out:
http://www.pcstats.com/articleview.cfm?articleID=830
__________________
Ad Muncher Usage Statistics for v4.7 Build 27105/1624
Adverts removed by Ad Muncher: 1,601,933
Approximate bandwidth saved: 12,515 MB
Counter started: April 2, 2003
Download:
http://war59312.admuncher.com/download.shtml