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

119Secure Path v3.0C for Linux and Linux Workgroup Edition Installation and Reference Guide
glossary
Glossary
Glossary
This glossary defines terms used in this guide or related to this product and is not
a comprehensive glossary of computer terms.
Controller
A controller is a hardware device that facilitates communication between a host and one or
more LUNs organized as an array. The HSG80, HSV110, HSV100 and MSA1000
controllers are supported for use with Secure Path.
Controller States
■ Critical—Reported for a controller pair bound in Multiple-bus Failover mode when
only one of the controllers is available. This state may mean a failed or offline
condition, since the server cannot communicate with the other controller at this time.
■ Operational—The controller is available with a good status.
■ Unknown—The server cannot communicate with this controller.
Device States
Attributes that describe the current operational condition of a device. A device may exist in
the following states:
■ Critical—Only one path remains available to the storage unit.
■ Degraded—At least one or more paths are failed to the storage unit.
■ Operational—The Secure Path device can be accessed on at least one path.
■ Unknown—Unable to communicate with the unit. This may indicate no available path
or a failed device.
■ Dead—All paths used by this Secure Path device have failed.
Fabric
A network comprised of high-speed fiber connections resulting from the interconnection of
switches and devices. A fabric is an active and intelligent non-shared interconnect scheme
for nodes.