SCSI Hard Drives- Failure and Recovery

SCSI (Small Computer System Interface) is an intelligent interface.It hides the complexity of physical format. Every device attaches to the SCSI bus in a similar manner. SCSI hard drives are faster than the others. These hard drives are often used with servers that require high performance throughput. It can happen with these hard drives that they may fail to perform with required rate.Cause ExplanationThe SCSI hard drives can’t start up when there is a physical failure. When the computer system is powered on, SCSI BIOS gets the drive control from system BIOS. This SCSI BIOS sends ‘Start Unit Request’ to the SCSI devices including SCSI hard drive so that they may start and spin up. SCSI BIOS gets ‘Start Unit Request Completed’ along with some additional information from drives in return.