SATA RAID QUESTION

[1bigboomstick]

Hey folks,

First time setting up SATA RAID and my plan was to mirror 2 drives for the C:\ and use 1 drive for the D:\; I need to limit downtime of this machine and I thought mirroring the C:\ would be the best option. I'm using an Asus A8N-E, Opteron165, 2GB RAM; all 3 drives are Western Digital 250GB SATA2 w/16MB Cache.

I hooked 2 drives to the SATA1 & SATA2 ports on the mobo, created the array, created a partition and installed WIN2K Server. Everything works great, Disk Management shows the array as Disk 0. But when I install the third drive to the SATA3 port, disk management now shows the array as Disk 1 and the D:\ is shown as Disk 0.

Can anyone explain why the Disk ID would change?

 

[comtec17]

This has to do with the device layout on the board. You may have disk 1 & 2 plugged into slots 2 and 3 instead of 1 & 2. Windows pulls the disk #'s in by controller number, target number, device number, and then LUN.