Glossary
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LaCie Dupli Disc CD121
User’s Manual
Multisession –
CD authoring process where data is added incrementally to a CD in more than one recording session. This
mode uses TAO, allowing you to add data during several sessions. With this mode, though, every time a session is added,
nearly 15MB of information is used to create information about the session.
Operating System (OS) –
Software that controls the assignment and use of hardware resources such as memory, processor
time, disk space and peripherals. An operating system is the basis on which software (applications) run. Windows, Mac OS
and UNIX are among the most common.
Overwrite –
To write data on top of existing data thus erasing the original data.
Packet Writing (PW) –
CD authoring process that is very useful for data backup, but cannot be used to write audio CDs.
Buffer underrun is impossible in this mode, because the data is written in “packets” of a few KB.
Partition, -ing –
After formatting, the hard drive is not yet ready to store files. It must be divided into sections that will contain
special information required for a Mac or PC to operate and other sections that will contain the files. This process of dividing
up the hard drive is called partitioning. A partition is just one section of the hard drive that will contain either special data put
there by Silverlining or other files and data.
Peripheral –
A generic term applied to printers, scanners, mice, keyboards, serial ports, graphics cords, disk drives and other
computer subsystems. This type of peripheral often relies on its own control software, known as a peripheral driver.
Plug & Play –
Term used to refer to the ability of a device that can be connected and/or disconnected while the computer is
running.
Port, hardware –
A connection component (SCSI port, for example) that enables a microprocessor to communicate with a
compatible peripheral.
Port, software –
A memory address that identifies the physical circuit used to transfer information between a microprocessor
and a peripheral.
RAM (Random Access Memory) –
Generally referred to as a computer’s “memory.” An integrated circuit memory chip that
allows information to be stored and retrieved by a microprocessor or controller. The information can be stored or accessed in
any order, and all storage locations are equally accessible.
Seek Time –
The amount of time (in thousandths of a second, or milliseconds) that it takes a hard drive’s read/write head to
move to a specific location n the disk. Average seek, then, is the average of a large number of random samplings all over the
disk. Seek time is CPU independent, meaning that seek time is the same for a disk drive, whether it is attached to a computer
or not.
Session at Once (SAO) –
CD authoring process which is similar to DAO, where all of the information is written to in one
session, but SAO allows for the ability to begin another session and record at a later time. This mode allows for greater
control of the recording process than MiS, PW or TAO, and more disc space can be utilized because there is no need for
gaps between tracks.
