FUJITSU Disk Drives MHJ2181AT - Manual (Page 216)

Glossary
C141-E088-01EN GL-3
Status
The status is a piece of one-byte information posted from the drive to the host
when command execution is ended. The status indicates the command
termination state.
VCM
Voice coil motor. The voice coil motor is excited by one or more magnets. In
this drive, the VCM is used to position the heads accurately and quickly.