User guide

Synchronization & Bandwidth Estimator. A tool that allows the IBM SmartCloud VSR customer to plan bandwidth
requirements based on existing bandwidth available, network resource type, end user activity, and unique disaster
recovery strategy requirements.
T
T1. Data transfer system that transfers digital signals at 1.544 megabits per second. See Digital Signal 1.
T3. See level 3 T-carrier.
TLS. See Transport Layer Security (TLS).
Tivoli
®
Service Request Manager
®
(SRM). An integrated platform that provides a comprehensive set of features
and functions that assists users to manage enterprise service requests.
Transport Layer Security (TLS). A cryptographic protocol that provides communication security over the Internet. It
encrypts the segments of network connections above the Transport Layer, using asymmetric cryptography for privacy
and a keyed message authentication code for message reliability. Several versions of the protocol are in widespread
use in applications such as web browsing, electronic mail, Internet faxing, instant messaging and voice-over-IP (VoIP).
The same can be said of its predecessor protocol, Secure Sockets Layer (SSL).
U
User. Performs any task authorized by the Customer Administrator role in the IBM SmartCloud VSR service.
Universal Disk Format (UDF). An implementation of the specification known as ISO/IEC 13346 and ECMA-167
and an open vendor-neutral file system for computer data storage for a broad range of media. In practice, it has been
most widely used for DVDs and newer optical disc formats, supplanting ISO 9660. Due to its design, it is very well
suited for incremental updates on both recordable or (re)writable optical media.
Universal Serial Bus (USB). An industry standard that defines the cables, connectors and protocols used for
connection, communication and power supply between computers and electronic devices. USB was designed to
standardize the connection of computer peripherals, such as keyboards, pointing devices, digital cameras, printers,
portable media players, disk drives and network adapters to personal computers, both to communicate and to supply
electric power.
USB. See Universal Serial Bus (USB).
URL. See Universal Resource Locator (URL).
UI. See User Interface (UI).
Universal Resource Locator (URL). A character string that specifies where a known resource is available on the
Internet and the mechanism for retrieving it. A URL is technically a type of Uniform Resource Identifier (URI) but in
many technical documents and verbal discussions, URL is often used as a synonym for URI.
user ID. See user identification (ID).
user interface (UI). In the industrial design field of human–machine interaction, user interface is the space where
interaction between humans and machines occurs. A user interface is the system by which people (users) interact
with a machine.
V
virtual private network (VPN). An extension of a company intranet over the existing framework of either a public
or private network. A VPN ensures that the data that is sent between the two endpoints of its connection remains
secure.
vCenter. A component of the IBM service delivery infrastructure that helps to ensure resiliency of the recovery
environment.
vdisk. A virtual logical disk or volume to which a host or application performs I/O operations. Generally provided
by a storage virtualization device and applicable mainly to Fibre Channel storage area network (FC SAN)
infrastructures, the disk is classed as virtual due to the way it is mapped to the physical storage capacity it
T•V
Glossary 81