What is RAID....

[TurtleMan]

heee u can called me dumb, but what is RAID, i know what it stand for, but what is the use of it,
I know it guard your data better, but how about performance wise, is it slower than regular ATA ?
what is RAID !!

 

[og3rz2]

It depends on what RAID you plan to use. If you use RAID 0, which incidentally has no redundancy to "guard your data" at all but you get a performance increase over a single ATA hard drive. This is because RAID 0 uses more than one disk with striping. However, if one disk goes in your array then all your data is lost. RAID 1 offers redundancy through mirroring and RAID 0+1 offers performance and redundancy (at the cost of 4 hard drives). Of course there are other levels of RAID. From an experience point of view, I currently use RAID 0 in which I stripe to 80 G hard drives. And yes I do get a performance increase which I use in my video editing. Hopefully this gives you some insight into RAID.

 

[Boonesmi]

here is a good article on the main page that explains it pretty well 🙂
link

 

[TurtleMan]

wow, thanks a lot for all the answer!!
Because im try to buy a new AMD mb now, but i was thinkin about whether go for Gigabyte or Epox's raid.
Now i understood what raid is.

 

[TurtleMan]

Originally posted by: og3rz2
It depends on what RAID you plan to use. If you use RAID 0, which incidentally has no redundancy to "guard your data" at all but you get a performance increase over a single ATA hard drive. This is because RAID 0 uses more than one disk with striping. However, if one disk goes in your array then all your data is lost. RAID 1 offers redundancy through mirroring and RAID 0+1 offers performance and redundancy (at the cost of 4 hard drives). Of course there are other levels of RAID. From an experience point of view, I currently use RAID 0 in which I stripe to 80 G hard drives. And yes I do get a performance increase which I use in my video editing. Hopefully this gives you some insight into RAID.

Umm i don't get the part that you said u put it on Raid 0+1 at the cost of 4 hard drives, does that mean if you do Raid 0+1, then
you lost the chance of putting on 4 more hard drive ? is it ? kinda confused here.
And how does it compared to ATA133, i know there is raid that support RAID ATA 133, does it still trasnfer at 133mb/sec or
faster, since it is on raid ?

 

[mechBgon]

Here is some great info straight from the FAQ's: RAID explained 😀

 

[TurtleMan]

ohh.. nice info thx.
1 more question,
currently i have 5 hard drives

1 - 120GB 8mB 7200rpm hd
4 - 80GB 7200rpm hd

so i will strip my 120gb on raid 0+1 ?
and 4 on the regular ata ?

 

[mechBgon]

To do RAID 0 + 1, you need four individual hard drives (they should ideally be the same exact model and size). The RAID0 part takes your data and puts half of your data on each of the first two drives, so it can be retrieved twice as fast (in theory). The RAID1 part uses the third and fourth drives to make a spare copy of the first and second drives, in case one of them fails. Without the RAID1, you would lose all of your data if one of the RAID0 drives failed.

So with your five drives, you could use the big one as your boot drive and put your programs and data on the other four after making a RAID10 out of them. Keep in mind that many of the IDE RAID controllers built into today's motherboards can do RAID0 or RAID1, but not RAID10... you'd need to buy a separate PCI RAID adapter, and because the IDE RAID adapters work best with just one drive per channel, you would need a 4-channel adapter with four cables. Guess what, this is getting a bit expensive for the moderate boost in sustained speed. Do you really need RAID? If you just need fast access to a relatively small amount of data, then get an Ultra160 SCSI card and a 15000rpm Seagate Cheetah X15-36LP. With a 3.6ms seek time and sustained throughput in the ~60Mb/sec area, it'll give very good performance (and has a 5-year warranty and runs pretty quietly too).