Lacie d2 Quadra USB 3.0 User Manual - Page 51

LaCie d2 Quadra Quadruple Interface Hard Drive Glossary page 50 and data programmed directly into the circuitry of a programmable read-only memory or an electronicallyerasable, programmable read-only memory chip. Used for controlling the operation of the computer or tape drive. Distinct from the software, which is stored in random access memory and can be altered. Folder - A list created on a disk to store files. Creating folders and sub-folders enables you to organize the storage of your files in a logical, hierarchical manner so that you can find and manage them more easily. Format, -ting, -ted - This is a process where a device is prepared to record data. In this process, the hard disk writes special information onto its own recording surfaces into areas (blocks) that are ready to accept user data. Since this operation causes all current user data stored on the hard disk to be lost, this is an infrequent operation that usually only happens at the factory that created the hard disk. It is unusual for something to happen to a hard disk that requires the end-user to initially perform this operation. GB (GigaByte) - This value is normally associated with data storage capacity. Basically, it means a thousand million or a billion bytes. In fact, it equals 1,073,741,824 bytes (or 1,024 x 1,024 x 1,024). Hardware - Physical components of a computer system, including the computer itself and peripherals such as printers, modems, mice, etc. Host Bus Adapter (HBA) - A printed circuit board that installs in a standard microcomputer and an interface between the device controller and the computer. Also called a controller. Initialize, -ed, Initialization - After a hard drive (or other storage device) is formatted and partitioned, some special data needs to be written to it that helps the Mac and Windows create files and save data. The process is called initialization. This process, like formatting, causes all user data on the storage device to be lost. Interface - The protocol data transmitters, data receivers, logic and wiring that link one piece of computer equipment to another, such as a hard drive to an adapter or an adapter to a system bus. Protocol means a set of rules for operating the physical interface, such as: do not read or write before the drive is ready. I/O (Input/Output) - Refers to an operation, program or device whose purpose is to enter data into or to extract data from a computer. Isochronous - Data transfer method that ensures that data flows continuously and at a steady rate. These transfers provide guaranteed transmission opportunities at defined intervals. Kb (Kilobit) - Equivalent to 1,000 bits. Kb/s - Kilobits per second. 480Kb/s is equal to 60KB/ s. KB (KiloByte) - Basically, this means 1,000 bytes, but it is actually 1,024 bytes. KB/s - Kilobytes per second. A means of measuring throughput. Mb (Megabit) - Equivalent to 1,000,000 bits. Mb/s - Megabits per second. A means of measuring throughput. 480Mb/s is equal to 60MB/s. MB (Megabyte) - Basically means one million bytes, but is actually 1,024 Kilobytes or 1,024 x 1,024 bytes, which equals 1,048,576 bytes. MB/s - Megabytes per second. A means of measuring throughput. Media - The material or device used to store information in a storage subsystem, such as a tape cartridge, CD, DVD or disk drive. 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