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Raid Config. Question...

M

mgravy

Senior member


Raid Virgin here?..
Will this RAID 0+1 configuration setup work, or am I asking for trouble?

RAID 0 = 1) 10GB Western Digital HD @ 7200rpm
2) 10GB Maxtor HD @ 7200rpm

RAID 1 = 1) 60GB Western Digital HD @ 5400rpm
2) 60GB Western Digital HD @ 5400rpm

Promise FastTrak100


Thanks!!
 
I would be skeptical using non-identical drives even though the rotation speed is the same. One may be slightly slower than the other...
 
Pardon me if i'm wrong but if you do a 0+1 you will lose 100gigs because the 60 gig hard drives will run as 10gigs. Unless you are trying to create 2 seperate arrays. The difference in drives are marginal so you wont see many problems.
 
If this was SCSI RAID, no problem.

Since it's not, I would NOT recommend using different drives! Why? SCSI devices must adhere to ANSI standards, where there are no [strict] standards with ATA devices. This is precisely why different brand disks have different characteristics from one another when in an array. When you use two different disks, even though their sizes and spindle speed are the same, you risk problems. Problems could range from lockups, data corruption, data loss, poor performance, unreliable performance, etc. For experimental purposes, it may be worth it.

Cheers!
 

Hey, I never thought of that. Now I am confused. Is what RMajere said right? Say I have one channel of RAID 0 with 10GB+10GB (stripped as 20GB) and the other channel of RAID 1 with 60GB+60GB (showing as 60GB total) am I limited to 10GB, or is that considered 2 separate arrays?!?
 
You should have a 20GB volume and a 60GB volume. The two 10GB disks are striped to form a 20GB volume and the two 60GB disks are mirrored to form a 60GB volume.

Cheers!
 
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