Users Guide

T
Tachometer, tach
A device that emits pulses that are used to measure/check speed or distance.
Tape cartridge
A container that holds magnetic tape that can be processed without separating it from the container.
Tape void
An area in the tape in which no signal can be detected.
TB
Terabyte.
TCP/IP
Transmission Control Protocol/Internet Protocol.
TCU
Tape control unit.
Terabyte
One terabyte = 1,000,000,000,000 bytes, or 1000 gigabytes (GBs).
TH
Thermal.
TKLM (IBM Tivoli
®
Key Lifecycle Manager)
IBM's EKM application that assists encrypting tape drives in generating, protecting, storing, and
maintaining encryption keys that encrypt information that is written to and decrypt information that is
read from tape media.
thread/load operation
A procedure that places tape along the tape path.
TLS
Transport :Layer Security.
TM
Tapemark, Trademark.
Transport mode
End-to-end communications security in which the end-point computers do the security processing.
Trusted certication
In cryptography, a trustworthy certicate that is not registered with a certicate authority.
Tunnel mode
Port-to-port communications security in which security is provided to several machines by a single
node.
U
UART
Universal asynchronous receiver/transmitter.
UID
Unit Identication.
UL
Underwriter's Laboratories.
Universal rack connector
A rackmount kit has four universal rack connectors as part of the kit. Each connector has two sides -
one side is for round-hole racks, and the other side is for square-hole racks. The square-hole side
might be painted. The connectors are installed from the inside of the rack out, and the rails are
hooked onto them. See Figure 35 on page 43
.
Unload
Prepare the tape cartridge for removal from the drive.
Glossary
229