B | SDLT 600 Product Manual |
B
Backup | A copy of a file, directory, or volume on a separate storage device |
| from the original, for the purpose of retrieval in case the original |
| is accidentally erased, damaged, or destroyed. |
Bad Data | A block that cannot reliably hold data because of a media flaw or |
Block | damaged format markings. |
Base Plate | An aluminum die casting that acts as the support platform for the |
| other modules and for the tape drive enclosure. The base plate |
| includes the precision mounting holes used to install SDLT tape |
| drives into a server or tape library. |
Bezel | (Also known as the faceplate.) A plastic panel that extends the |
| face of a tape drive so that it covers a computer’s drive bay |
| opening. The internal model of SDLT 600 has two bezels: a |
| library bezel and an internal bezel. |
BIOS | Basic Input/Output System. A set of routines that work closely |
| with the hardware to support the transfer of information between |
| various elements of the system, such as memory, disks, and |
| peripheral devices. |
Block | A sector or group of sectors. SDLT 600 supports block sizes up to |
| 16 MB. |
BOM or BOT | Beginning of Media or Beginning of Tape. The physical |
| beginning of the media. |
BRC | |
| product to read data cartridges written on earlier model tape |
| drives. |
Buckling | The buckling mechanism engages the tape leaders upon data |
Mechanism | cartridge load and disengages them on data cartridge unload. |
Buffer | An area of RAM reserved for temporary storage of data that is |
| waiting to be sent to a device. The data is usually on its way to or |
| from the tape drive or some other peripheral device. |
Bus | The part of a chip, circuit board, or interface designed to send |
| and receive data. |
March 2004 |
