Active SMART and SCSI drives
Active SMART supports S.M.A.R.T. on both IDE (ATA) and SCSI
devices. (In order to monitor SCSI drives please use Active SMART
SCSI version) But SCSI drives use another method of reporting their
S.M.A.R.T. status, in concordance with S.M.A.R.T. implementation
for IDE/ATA devices. They do not report detailed information about
supported attributes and do not support reporting of detailed
attributes statistics. SCSI drives report only overall S.M.A.R.T.
status of the disk. Active SMART monitors this status and uses
other drive health-status related features of SCSI drives to
provide early notification about possible drive fail.