HP StorageWorks SAN Virtualization Services Platform Manager command line interface user guide (AG781-96016, March 2009)

virtual disk In VSM, a unit of storage allocated to one or more hosts from a storage pool. A
virtual disk can range in size from 1 GB to 2 TB. DPMs present allocated virtual
disks to hosts as logical drives.
Volume Shadow
Copy Service
A backup infrastructure for the Microsoft Windows Server 2003/2008 operating
systems, as well as a mechanism for creating consistent point-in-time copies of
data known as shadow copies.
VSM Virtualization Services Manager. Short for the HP StorageWorks SAN
Virtualization Services Platform Manager application.
VSM client The management interface for VSM servers. The VSM client runs on any PC
connected to a VSM server workstation through an IP connection.
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 volumes and are not initiating additional
writes.
VSS thaw The completion of a VSS shadow copy freeze.
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.
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.
Glossary86