Fujitsu MHV2040BH Product Manual page 259

Rotational delay
Time delay due to disk rotation. The mean delay is the time required for half a
disk rotation. The mean delay is the average time required for a head to reach a
sector after the head is positioned on a track.
Seek time
The seek time is the time required for a head to move from the current track to
another track. The seek time does not include the mean rotational delay.
Serial-ATA
Serial ATA is an extension specification from the current Parallel ATA physical
storage interface. The parallel data transfer of Parallel ATA is changed to the
serial data transfer in Serial-ATA for obtaining greater data transfer speed.
Slave (Device 1)
The slave is a second drive that can operate on the AT bus. The slave is daisy-
chained with the first drive operating in conformity with the ATA standard.
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.
C141-E224
Glossary
GL-3