Author Topic: raid 0 or raid 1 (Read 316 times)

Eagler · « **on:** June 16, 2006, 02:51:02 PM »

just wondering which raid would offer better performance for AH?

with raid 1 providing a faster disk read wouldn't it be the better of the two?

AH doesn't write that much to the hard drive does it?

eagl · « **Reply #1 on:** June 16, 2006, 10:43:27 PM »

Raid 0 is for performance and Raid 1 is for reliability. Except for maybe during the initial building of textures though, I don't know if you'd notice much of a difference. AH already has fairly short load times.

Raid 1 is definately slower overall though.

Brenjen · « **Reply #2 on:** June 16, 2006, 10:55:47 PM »

If I'm not mistaken raid-0 & raid-1 will both read at the same speeds; it's the write speeds that are slower for raid-1.

Eagler · « **Reply #3 on:** June 16, 2006, 11:43:59 PM »

thought reads were slightly faster on the raid 1 as the cpu read off both hd's getting its info that much faster

looking at setting up a raid 1 now as one of the two year old wd's in my raid 0 has failed to the point I can't back it up now. Not looking forward to installing everything again. A duplicate backup in a raid 1 sounds good about now

Brenjen · « **Reply #4 on:** June 16, 2006, 11:59:09 PM »

Raid-0 & raid-1 configurations both read off two HD's, the two that have the information split between them, raid-1 has to write the information to three HD's, it splits the info between two & writes the complete information to the third.

iirc they both read at virtually the same speed, but raid-1 writes a little slower because of the third HD

Irwink! · « **Reply #5 on:** June 17, 2006, 07:37:19 AM »

Raid 1 is disk mirroring involving two disks, not three. Raid is best implemented using SCSI drives/controllers instead of IDE as the SCSI controller can use more than one channel at a time. IDE can use only one at a time and is therefore slower. Raid 5 involves three (or more) disks.

Brenjen · « **Reply #6 on:** June 17, 2006, 11:21:46 AM »

Well people have been discussing the raid set-ups for years, we won't be any different I suppose.

Some people argue that raid-0 isn't a raid at all.

I'm just going by what I have read & been told by others that have done raid set-ups.

Kev367th · « **Reply #7 on:** June 17, 2006, 01:22:14 PM »

For home usage you aren't going to see a difference using RAID, especially on SATA or IDE drives/controllers.
They aren't totally hardware RAID solutions unlike SCSI implementations.

Just as well using them as two disks and backing up data between them.

Not tried the new RAID 5 option available on the latest SATA motherboards so can't comment on that.

Generally -
RAID 0 - Read fast / Write fast
RAID 1 - Read fast / Write slower RAID 0

Eagler · « **Reply #8 on:** June 18, 2006, 05:11:12 PM »

thx Kev
yes, there were jumpers (short 5/6) to lock in the sata150 setting