Hi I have a couple of windows systems that I wanted to install RAID 1 onto, I have purchased PCI express controller cards and extra drives, but here I made a mistake, one PC has an existing 3.5" 160Gb SATA drive, and by mistake I bought a 2.5" 160Gb SATA to pair with this disk.

Does anyone know if this will work? or will the different disk sizes cause an issue with the RAID any comments will be much appreciated.