HP SAN Virtualization Services Platform - Manual (Page 76)

VSM GUI Graphical user interface used to manage the HP StorageWorks SAN Virtualization Services
Platform environment.
VSM server VSM software that runs on a dedicated appliance connected to a SAN fabric and manages and
controls all storage systems on the SAN. A VSM server virtualizes the storage space on the storage
systems, creates storage pools and virtual disks, and provides agents with virtual disk information.
The VSM server also moves data in snapclone, migration, and asynchronous mirroring operations.
VSS See Volume Shadow Copy Service..
VSS freeze A period of time during the shadow copy creation process when all services (writers) have flushed
their writes to the virtual disks and are not initiating additional writes.
VSS thaw The completion of a VSS shadow copy freeze.
W
WWNN World Wide Node Name. The globally unique identifier for a system containing Fibre Channel
ports.
A WWN is a 64–bit value, typically represented as a string of 16 hexadecimal digits.
WWPN World Wide Port Name. The globally unique identifier for an individual Fibre Channel port.
A WWPN is a 64–bit value, typically represented as a string of 16 hexadecimal digits.
Z
zone A collection of devices or user ports that are permitted to communicate with each other through
a fabric. Any two devices or user ports that are not members of at least one common zone are
not permitted to communicate with each other.
76 Glossary