V
valid configuration
A configuration that is supported.
VDisk See virtual disk.
virtual disk (VDisk)
In SAN Volume Controller, a device that host systems attached to the
storage area network (SAN) recognize as a Small Computer System
Interface (SCSI) disk.
virtualization
In the storage industry, a concept in which a pool of storage is created that
contains several disk subsystems. The subsystems can be from various
vendors. The pool can be split into virtual disks that are visible to the host
systems that use them.
virtualized storage
Physical storage that has virtualization techniques applied to it by a
virtualization engine.
virtual storage area network (VSAN)
A fabric within the SAN.
vital product data (VPD)
Information that uniquely defines system, hardware, software, and
microcode elements of a processing system.
VLUN See managed disk.
VPD See vital product data.
VSAN See virtual storage area network.
W
WBEM
See Web-Based Enterprise Management.
Web-Based Enterprise Management (WBEM)
A tiered, enterprise-management architecture that was developed by the
Distributed Management Task Force (DMTF). This architecture provides the
management design framework that consists of devices, device providers,
the object manager, and the messaging protocol for the communication
between client applications and the object manager.
worldwide node name (WWNN)
An identifier for an object that is globally unique. WWNNs are used by
Fibre Channel and other standards.
worldwide port name (WWPN)
A unique 64-bit identifier that is associated with a fibre-channel adapter
port. The WWPN is assigned in an implementation- and
protocol-independent manner.
WWNN
See worldwide node name.
WWPN
See worldwide port name.
Glossary 183
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