HP StorageWorks Secure Path V3.0C for Linux and Linux Workgroup Edition Installation and Reference Guide (AA-RU7VD-TE, February 2004)

Glossary
120 Secure Path v3.0C for Linux and Linux Workgroup Edition Installation and Reference Guide
HBA
A Host Bus Adapter is an I/O device that serves as the interface connecting a host system to
the SAN (Storage Area Network).
LUN
A Logical Unit Number is the actual unit number assigned to a device at the RAID system
controller.
Object
The objects that are supported for v3.0C of Secure Path are adapters and
controllers.
Path
A virtual communication route that enables data and commands to pass between a host
server and a storage device.
Path States and Attribute
■ Active—Currently used for the I/O stream.
■ Available—Available on the active controller for the I/O stream.
■ Failed—Currently unusable for the I/O stream.
■ Quiesced—Path is valid but the user has moved all I/O from it.
■ Standby—The path is valid on the standby controller.
■ Preferred—A path that is preferred for the I/O stream, across reboots.
Port A
The relative number of an HBA. A specific port number is determined according to its order
of discovery by the Windows operating system and includes SCSI, Fibre Channel, and IDE
adapter types.
SAN
Storage Area Network. A configuration of networked devices for storage.
State
State is an attribute that describes the current operational condition of an object. See Path,
Path States and Attribute, Controller States, and Device States.