Western Digital WD ShareSpace User Manual page 198

WD SHARESPACE
USER MANUAL
RAID 0: RAID protocol in which data is striped across multiple hard drives, enabling
the accelerated reading and recording of data by combining the work of two or more
drives to increase performance. See also Striping.
RAID 1: RAID protocol in which two copies of the data are instantaneously
recorded: each on separate hard drives. RAID 1 ensures the protection of users' data
because in the event that one of the hard drives fails, the other hard drive(s) will
continue to read and write data until the faulty hard drive is replaced and rebuilt to
once again safely mirror the data. See also Mirroring.
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.
RAID 10: RAID protocol that requires a minimum of four drives to implement. Adds
redundancy and fault tolerance, providing data striping on top of disk mirroring.
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: A folder that can be used to organize and store files on your WD
ShareSpace. Shares can be shared with everyone (public) or with selected users on
your network (private).
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.
Spanned: Combines drives in a linear fashion to create one large logical volume. A
spanned drive is like a single, bigger drive, in that files written to the volume earlier go
to the "beginning" of the volume, on the first physical drive. If one of the drives fails, all
data is lost.
SSH: Secure Shell. A network protocol that uses encryption and authentication keys
to enable two devices on the network to exchange data securely. See also Protocol.
SSL: Secure Socket Layer. A protocol that provides authentication and encryption
services between a web server and a web browser. 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.
GLOSSARY - 193