HP StoreEver MSL2024, MSL4048, MSL8048, and MSL8096 Tape Libraries User and Service Guide (AK378-96059, December 2012)

GUI Graphical user interface. Software that allows the user to control the device through visual screens.
H
HBA An acronym for host bus adapter, an interface card which plugs into the computer's bus and
connects it to the network.
host One or more computers that generate and communicate data to the device.
hot-plug, hot swap The plugging in or removal of a drive into a system with the power turned on.
HVDS High voltage differential signaling, also called differential SCSI. HVDS supports cable lengths up
to 25 meters.
I
import The process of placing a cartridge into the cartridge access port so that the robot can insert it
into a storage slot.
inventory The process of reading and storing in memory the bar code identification and locations of all
cartridges in the library.
L
LAN Local Area Network. A computer network covering a local area, such as a home, office, or small
building, that is usually based on Ethernet technology.
LCD Liquid crystal display. A type of display that uses two sheets of polarizing material with a liquid
crystal solution.
LED Light emitting diode. An electronic device that lights up when electricity is passed through it.
LTO An acronym for Linear Tape-Open technology. An “open format” technology, which means that
users will have multiple sources of products and media.
LUN Logical Unit Number. An address for a component of a SCSI device, similar to an apartment
number. In this device, the host computer sends the SCSI commands for the library to LUN 1 of
the Master tape drive and sends SCSI commands for the tape drive itself to LUN 0.
LVDS Low Voltage Differential Signaling. A low noise, low power, low amplitude method for high-speed
(gigabits per second) data transmission over copper wire.
M
MAC address Media Access Control address. A unique identifier attached to most forms of networking equipment,
which is part of the Ethernet specification.
magazine A removable array that holds cartridges and is placed into the load port of the tape library.
mailslot All or part of a magazine used to import cartridges into the library.
Megabyte A unit of storage abbreviated as M or MB, equal to 1,024 x 1,024 = 1,048,576 bytes.
MIB Management Information Base. A type of database used to manage the devices in a
communications network.
P
parallel SCSI A suite of closely related standards in which parallel SCSI devices are connected in parallel to
form busses. Each parallel SCSI standard has its own bus width, clock speed, maximum throughput,
maximum cable length, and maximum number of devices on the bus.
parallel SCSI
devices
External parallel SCSI devices with two ports, one for the incoming cable and another for the
outgoing cable to the next device. (see daisy chaining).
put An activity in which a robot places a cartridge into a slot or drive.
R
RAID Redundant Array of Inexpensive Disks. A group of disks that work together to improve performance.
RAID 5 provides some parity protection in case one of the disks fails.
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