IBM 3580-L23 Setup Guide - Page 136

system that enables data communication between a supported server and another device, such as the 3580 Ultrium 2 Tape Drive. LVD signaling uses two wires to drive one signal over copper wire. The use of wire pairs reduces electrical noise and crosstalk. LTO. Linear Tape-Open. LTO-CM. LTO cartridge memory. LTO cartridge memory (LTO-CM). Within each IBM LTO Ultrium Data Cartridge, an embedded electronics and interface module that can store and retrieve a cartridge's historical usage and other information. LVD. Low voltage differential. M m. Meter. magnetic tape. A tape with a magnetizable surface layer on which data can be stored by magnetic recording. maintenance mode. The state of operation in which the 3580 Ultrium 2 Tape Drive must be before it can run tape drive diagnostics or maintenance procedures. MB. Megabyte. MBps. Megabytes per second. media. The plural of medium. media capacity. See capacity. medium. A physical material (such as magnetic tape) in or on which data may be represented. megabyte (MB). 1 000 000 bytes. message display. Located on the front of the 3580 Ultrium 2 Tape Drive, an LCD display that provides information about the status of the tape drive and any error conditions. metal particle tape. In the LTO Ultrium Tape Cartridge, tape that uses very small, pure metal particles (rather than oxide coatings) in the magnetic layer. meter. In the Metric System, the basic unit of length; equal to approximately 39.37 inches. Model L23. One of two versions of the 3580 Ultrium 2 Tape Drive. The Model L23 uses the Ultra2, Low Voltage Differential (LVD) SCSI interface. Contrast with Model H23. Model H23. One of two versions of the 3580 Ultrium 2 Tape Drive. The Model H23 uses the Ultra, High Voltage Differential (HVD) SCSI interface. Contrast with Model L23. 120 IBM 3580 Ultrium Tape Drive Setup and Operator Guide N native data capacity. The amount of data that can be stored without compression on a tape cartridge. O oersted. The unit of magnetic field strength in the unrationalized centimeter-gram-second (cgs) electromagnetic system. The oersted is the magnetic field strength in the interior of an elongated, uniformly wound solenoid that is excited with a linear current density in its winding of one abamper per 4π centimeters of axial length. operating environment. The temperature, relative humidity rate, and wet bulb temperature of the room in which the 3580 Ultrium 2 Tape Drive routinely conducts processing. operating system. The master computer control program that translates the user's commands and allows software application programs to interact with the computer's hardware. P PDF. Portable Document Format. Portable Document Format (PDF). A standard specified by Adobe Systems, Incorporated, for the electronic distribution of documents. PDF files are compact, can be distributed globally (by e-mail, the web, intranets, or CD-ROM), and can be viewed with the Acrobat Reader, which is software from Adobe Systems that can be downloaded at no cost from the Adobe Systems home page. POST. Power-On Self Test. PostScript. A standard specified by Adobe Systems, Incorporated, that defines how text and graphics are presented on printers and display devices. pot-setting tool. Normally used on a potentiometer to adjust resistance, a tool that slides over the shaft of the loader motor gear in the 3580 Ultrium 2 Tape Drive and holds the shaft for easy turning. power cord. A cable that connects a device to a source of electrical power. power-off. To remove electrical power from a device. power-on. To apply electrical power to a device. Power-On Self Test (POST). A series of diagnostic tests that are run automatically by a device when the power to that device is turned on.