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GLOSSARY

RAID 5— For systems with three or more drives, RAID 5 offers fast performance by striping data across all drives. It protects data by dedicating a quarter of each drive to fault tolerance, leaving three quarters of the system capacity available for data storage.

RAM—Random Access Memory. Memory that allows any storage location to be accessed randomly, as opposed to sequential access devices such as tape drives.

ROM—Read-Only Memory. An integrated circuit memory chip containing programs and data that the computer or host can read but cannot modify. A computer can read instructions from ROM but cannot store data in ROM.

Share—An area, similar to a folder or directory, set up to organize files and access them on your network. Shares can be Public, shared with everyone on your network, or Private, shared with only selected users on your network.

SMB—Server Message Block. File-sharing protocol for Windows platform that allows users to access shares through My Network Places. Mac OS X or later also supports the CIFS protocol. See also Protocol.

SMTP—Simple Mail Transfer Protocol. Standard for transferring email across the Internet. See also Protocol.

Streaming Media—Media such as audio, video, and photos that are constantly received while being delivered by a streaming provider.

Striping—The spread of data over multiple hard drives to improve performance. See also RAID 0.

TCP/IP—Transmission Control Protocol/Internet Protocol. A set of protocols for communication over interconnected networks. The standard for data transmission over networks. See also Protocol.

UPnP—Universal Plug n Play. A set of computer network protocols that simplify the implementation of networks in the home by allowing devices to connect seamlessly. See also Protocol.

WAN—Wide Area Network. A computer network that crosses metropolitan, regional, or national boundaries.

WD SENTINEL DX4000	74
ADMINISTRATOR’S GUIDE