It was originally established as a division of NCR Corporation in 1972 , before NCR 's takeover by AT&T Corporation in 1991 .
Symbios Logic was a manufacturer of SCSI host adapter chipsets and disk array storage subsystems .
Symbios Logic was originally established as a division of NCR Corporation in 1972 , before NCR 's takeover by AT&T Corporation in 1991 .
Symbios Logic was a manufacturer of SCSI host adapter chipsets and disk array storage subsystems .