LPD Line Printer Daemon.
LUN Logical unit number. A LUN results from mapping a logical unit number, port ID, and LDEV ID
to a RAID group. The size of the LUN is determined by the emulation mode of the LDEV and
the number of LDEVs associated with the LUN.
mount point A host's file system path or directory name where a host volume (device) is accessed.
NAS Network attached storage.
NCT Network Configuration Tool.
NFS Network file system. The protocol used in most UNIX environments to share folders or mounts.
NIC Network interface card. A device that handles communication between a device and other
devices on a network.
SAN Storage area network. A network of storage devices available to one or more servers.
SAS Serial Attached SCSI.
SATA Serial Advanced Technology Attachment.
volume Volume on disk. An accessible storage area on disk, either physical or virtual.
volume mapping The process by which volume permissions (read only, read/write, or none) and LUNs are
assigned to a host port.
186 Glossary
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