Installation and Reference Guide HP StorageWorks Secure Path 3.0F Service Pack 4 for HP-UX 11i v1.0 and 11i v2.0 (5697-8001, March 2009)

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 and HSV110
controllers are supported for use with Secure Path.
controller states • critical−Reported for a controller pair bound in multi-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 composed 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.
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.
path A virtual communication route that enables data and commands to pass between
a host server and a storage device.
path states • 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.
HP StorageWorks Secure Path 3.0F Service Pack 4 for HP-UX 11i v1.0 and 11i v2.0 103