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post #11 of 23
RAID 0 is faster because it stripes the data across two physical drives.

RAID 1 should be around the same performance as 1 drive while reading, and slightly slower while writing - unless you have Intel ICH8R or higher (or a dedicated RAID card) where the system can read from either drive it wants to (Kind of like parallel tasking. Higher end cards with SAS can actually read from the drive with the head closest to the data!)

RAID 0+1 is normally done with 2,4,6,8 drives and gives some great benefits by combining the featuers of both RAID 0 and RAID 1 but with onboard RAID will still not be quite as fast as RAID 0.

RAID 5 onboard gives you additional capacity but is actually slower on most onboard/software RAIDs then RAID 0 and equal to RAID 1 on dedicated cards when using 3 drives. The more drives you have in a RAID 5 the slower the WRITING gets because it has to spread the data & parity across ALL AVAILABLE DRIVES, but the faster the READING gets (on decent controllers).

Intel Matrix RAID 0+1 is probably the best choice for someone looking for performance and security on a two drive system. The Matrix RAID system will let you set two partitions on the same logical units as follows:

C: 50GB + 50GB RAID 0 stripe (100GB useable STRIPED)
D: 270GB + 270GB RAID 1 mirror (270GB useable MIRRORED)
Edited by LiquidKaos - 6/20/08 at 2:06pm
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post #12 of 23
^ You can't do RAID0+1 with 2 drives... you need 4 drives at least (2 stripes + 2 mirrors = RAID 0 + 1)

For performance, just do RAID-0 and backup your most critical data, and get yourself a UPS if you have a shaky power grid.
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post #13 of 23
Quote:
Originally Posted by Rev1 View Post
^ You can't do RAID0+1 with 2 drives... you need 4 drives at least (2 stripes + 2 mirrors = RAID 0 + 1)

For performance, just do RAID-0 and backup your most critical data, and get yourself a UPS if you have a shaky power grid.
Do a little research before posting my friend.

ADDED: If you would like, I could change it to say Intel Matrix RAID 0 & 1, but I did go on to describe exactly what the Matrix RAID is capable of.
Edited by LiquidKaos - 6/20/08 at 12:18pm
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post #14 of 23
Quote:
Originally Posted by LiquidKaos View Post
Do a little research before posting my friend.

ADDED: If you would like, I could change it to say Intel Matrix RAID 0 & 1, but I did go on to describe exactly what the Matrix RAID is capable of.
How do you do RAID0+1 or RAID10 with two drives? It does it at a partition level? That sounds terribly inefficient...
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post #15 of 23
Quote:
Originally Posted by DuckieHo View Post
How do you do RAID0+1 or RAID10 with two drives? It does it at a partition level? That sounds terribly inefficient...
http://www.intel.com/design/chipsets...storage_sb.htm
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post #16 of 23
Quote:
Originally Posted by LiquidKaos View Post
Love to see benchmarks on the RAID0... especially when simultaneously accessing the RAID5.
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post #17 of 23
Quote:
Originally Posted by DuckieHo View Post
Love to see benchmarks on the RAID0... especially when simultaneously accessing the RAID5.
If you just put your data on the RAID1 or RAID5, then who cares? Put your OS, your apps, and some of your favorite games on the C: drive RAID0 stripe and be done with it.

Nobody claims that running Win 2008 and SLQ 2005 with all the data on the RAID5 D: would perform good
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post #18 of 23
Thread Starter 
Quote:
Originally Posted by DuckieHo View Post
Wrong....

RAID0+1,10 requires: 4+ drivers (even number only) and you get N/2 usable space.
RAID5 requires: 3+ drives and you get N-1 usable space.


Again... PLEASE SHOW US SOME BENCHMARKS.
Well, when my computer crashed, I purchased a WD 320GB to backup my data (my RAID was intact, OS crashed).

What I meant in that statement was that I should have purchased a fourth HD (to create an additional RAID).

In regard to the benchmark, which tool can I download (preferably freeware)? My dad has SiSoft Sandra Home, will this work? Is there a particular type of benchmark I should be doing?

Quote:
Originally Posted by LiquidKaos View Post
RAID 0 is faster because it stripes the data across two physical drives.

RAID 1 should be around the same performance as 1 drive while reading, and slightly slower while writing - unless you have Intel ICH8R or higher (or a dedicated RAID card) where the system can read from either drive it wants to (Kind of like parallel tasking. Higher end cards with SAS can actually read from the drive with the head closest to the data!)

RAID 0+1 is normally done with 2,4,6,8 drives and gives some great benefits by combining the featuers of both RAID 0 and RAID 1 but with onboard RAID will still not be quite as fast as RAID 0.

RAID 5 onboard gives you additional capacity but is actually slower on most onboard/software RAIDs then RAID 0 and equal to RAID 1 on dedicated cards when using 3 drives. The more drives you have in a RAID 5 the slower the WRITING gets because it has to spread the data & parity across ALL AVAILABLE DRIVES, but the faster the READING gets (on decent controllers).

Intel Matrix RAID 0+1 is probably the best choice for someone looking for performance and security on a two drive system. The Matrix RAID system will let you set two partitions on the same logical units as follows:

C: 50GB + 50GB RAID 0 stripe (100GB useable STRIPED)
D: 270GB + 270GB RAID 1 mirror (270GB useable MIRRORED)
I think you meant, 50GB+50GB RAID 0 stripe yields 50GB usable. On my RAID 0, I only had 320GB available to me.
Edited by PeaceMaker - 6/20/08 at 1:30pm
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post #19 of 23
Quote:
Originally Posted by PeaceMaker View Post
Well, when my computer crashed, I purchased a WD 320GB to backup my data (my RAID was intact, OS crashed).

What I meant in that statement was that I should have purchased a fourth HD (to create an additional RAID).

In regard to the benchmark, which tool can I download (preferably freeware)? My dad has SiSoft Sandra Home, will this work? Is there a particular type of benchmark I should be doing?



I think you meant, 50GB+50GB RAID 0 stripe yields 50GB usable. On my RAID 0, I only had 320GB available to me.
No (lol you almost got me).. I mean 50GB+50GB RAID 0 stripe yields 100GB usable.
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post #20 of 23
Thread Starter 
Quote:
Originally Posted by LiquidKaos View Post
No (lol you almost got me).. I mean 50GB+50GB RAID 0 stripe yields 100GB usable.
How?? When I was in RAID 0, I only had 320GB usable... What's the deal!?

I also would like to add... that picture in your profile... is incredible. WOW. I want her in 1680x1050 resolution on my desktop.
Edited by PeaceMaker - 6/22/08 at 4:47am
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