besides if something fails its probably gonna be mechanical error and that part is identical in scsi/(s)ata, right?
nope, SCSI hardrives is not mechanicaly identical to ata/sata drives... a scsi drive is always of a far higher and better quality than any ATA/SATA/SATA2 drives... and THAT is why they are more expensive, you want quality, you must pay quality prices. but then you will at least not have your drive deciding to flip a fuse and destroy all the data on it at a whim.
