User guide

Dynamic Host Configuration Protocol (DHCP). A communications protocol that lets network administrators
centrally manage and automate the assignment of Internet Protocol (IP) addresses in an organization's network.
Using the Internet Protocol, each machine that can connect to the Internet needs a unique IP address, which is
assigned when an Internet connection is created for a specific computer. Without DHCP, the IP address must be
entered manually at each computer in an organization and a new IP address must be entered each time a computer
moves to a new location on the network.
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encryption key pair. A pair of asymmetric cryptographic keys (that is, one decrypts messages which have been
encrypted using the other) consisting of a public key and a private key.
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failback. The process by which a system returns to normalcy after failover is completed.
failback ISO image. The system image downloadable from the portal download page required for system failback.
failover. The capability to switch to a redundant or standby computer server, system, or network upon the failure or
abnormal termination of the previously active application, server, system, or network.
File Transfer Protocol (FTP). An application layer protocol that uses TCP and Telnet services to transfer bulk-data
files between machines or hosts over a TCP/IP-based network, such as the Internet.
firewall. A firewall is a device or set of devices designed to permit or deny network transmissions based upon a set
of rules.
freeze replication. Freezing (pausing) and Unfreezing features can be useful if you are about to perform a risky
action on your server, such as installing a major service pack onto a critical server's operating system. If you freeze
the replication before you start such an operation, and it fails, you can recover the absolutely most recent data
available before the installation failed.
FTP. See File Transfer Protocol (FTP).
FTP Synchronizer Professional. An FTP sync product that allows you to synchronize files between local computers
and remote FTP servers.
FTP client. FTP is built on a client-server architecture and utilizes separate control and data connections between
the client and server. To connect to an FTP server, a client requires a username and password as set by the
administrator of the server.
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GeoTrust certificate. GeoTrust is a large digital certificate provider.
In cryptography, a public key certificate (also known as a digital certificate or identity certificate) is an electronic
document which uses a digital signature to bind a public key with an identity — information such as the name of a
person or an organization, their address, and so forth.The certificate can be used to verify that a public key belongs
to an individual. IBM VSR portals use digital certificates provided by GeoTrust.
gold-level server recovery. See Reserved Resource Virtual Machine service level.
guest OS. An operating system (OS) that is installed in a virtual machine or disk partition in addition to the host or
main OS.
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HTML. See Hypertext Markup Language (HTML).
HTTP. See Hypertext Transfer Protocol (HTTP).
HTTPS. See Hypertext Transfer Protocol Secure (HTTPS).
Hypertext Markup Language (HTML). A standardized system for tagging text files to achieve font, color, graphic,
and hyperlink effects on World Wide Web pages.
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IBM SmartCloud Virtualized Server Recovery: Customer User Guide