How do I decide between SATA hard drives and SCSI hard drives?
It depends on the application environment – if it is very cost sensitive, drive performance is not important, and the types of applications being are being run (that do not place a great deal of stress on the hard drives), then SATA drives may be good enough. However, if drive reliability or performance is more important; or if the application environment will put a great deal of stress on the drives, then SCSI hard drives are recommended over SATA HDD.