VANGO(VL40)
SAMSUNG HARD DISK DRIVE
LBA mode
Logical block allocation.
DOS mode to resolve 528MB capacity restriction.
LED
Light Emitting Diode.
Used for signal light to all kind of electric containing computer.
Low profile
One of standard height of HDD, the real height is 1 inch.
Low-level
formatting
Operating system make sector on disk enable to access in proper region in order to create file
structure.
Master
HDD become booting when put
2 more IDE drives. ( decided C:, Managed master/slave by
Jumper control & CMOS setup)
Master/Slave
/Cable
select
When 2 IDE drives operated, one drive become Master(drive C: or drive 0) and the other is
Slave.(drive D: or drive 1) Master/Slave is determined by using jumper within drive or Cable
select method. jumper setup is different from companies,so refer to usages, Cable Select has a
complex jumper method so drive become master/slave automatically according to decided signal
for Cable Select..
Media
Aluminium
Plate substrate coating with magnetic body.
Casting with lubricant to prevent damage for Head
landing/off, where data stored in form of magnetic flux or politary change.
Mega
Byte(MB)
Data storage unit. Accurately 1,048,576 Bytes(1,024*1,024). that is 1,000KB
Mega
Hertz(MHz)
Clock speed unit for PC, clock occur million times per second
Microprocess
or
Collection of CPU function to LSI( large IC).
MIG
Read metal in gab head, Improved head has high valued inductance by inserting metal around
gab of core.
Millisecond
One thousandth. Speed unit of HDD efficiency.
MMX
Multimedia Extension. Intel's new CPU chip. Added new 57 orders to run image and sound,
efficiency is improved about 10~20%.
MP
Mass production.
MPC
Multi-media Personal Computer
MR head
Magnetic Resistive head. For high-efficiency HDD, IBM developed the marginal head which is
enable to separate read/write applying MR elements to read head of thin film head.
MRB
material review board.
MTBF
Mean Time Between Failure, average time of occurring failure. This is one of most important
reliability factor, not the actual measured value but the calculated value of every companies.
MTTF
Mean Time to failure. same as MTBF
MTTR
Mean Time To Repair, average time to repair. Generally the replacing time of
PCBA or HDA.
Multi-Zone
Recording
Zone-Bit Recording, Constant Recording. While recording data on rotating disk, the inside
diameter get shorter of sector length and outside diameter get longer of that if the frequency of
signals is constant. So we make drive capacity higher if make the sector length same with
outside diameter and inside diameter. We also say Constant Angular Velocity, CAV and
Constant Linear Velocity, CLV.
MVT
Maturity Verification Test, Test for MP possibility.
ORT
On-going reliability test. Test for MTBF and long time test in normal condition. ( Burn in test
progress with mal-condition)
OS
Operating System. Control and manage computer system to use more easily for user.
(DOS, UNIX etc.)
Outer Crash
Stop
Parts decide outer range as ARM can move, this parts is a stopper of HEAD out of DISK.
