HP StorageWorks P2000 HP StorageWorks P2000 G3 MSA System SMU Reference Guide - Page 135

unwritable cache data, vdisk, volume, volume copy

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ULP Unified LUN Presentation. A RAID controller feature that enables a host to access mapped volumes through any controller host port. unwritable cache data Cache data that has not been written to disk and is associated with a volume that no longer exists or whose disks are not online. If the data is needed, the volume's disks must be brought online. If the data is not needed it can be cleared, in which case it will be lost and data will differ between the host and disk. Unwritable cache is also called orphan data. vdisk A "virtual" disk comprising the capacity of one or more disks. The number of disks that a vdisk can contain is determined by its RAID level. volume A portion of the capacity of a vdisk that can be presented as a storage device to a host. volume copy An independent copy (clone) of the data in a volume. The capability to create volume copies is a licensed feature that makes use of snapshot functionality. WWN World Wide Name. A globally unique 64-bit number that identifies a node process or node port. WWNN World Wide Node Name. A globally unique 64-bit number that identifies a node process. WWPN World Wide Port Name. A globally unique 64-bit number that identifies a node port. HP StorageWorks P2000 G3 MSA System SMU Reference Guide 135

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HP StorageWorks P2000 G3 MSA System SMU Reference Guide
135
ULP
Unified LUN Presentation. A RAID controller feature that enables a host to access mapped
volumes through any controller host port.
unwritable cache data
Cache data that has not been written to disk and is associated with a volume that no longer
exists or whose disks are not online. If the data is needed, the volume's disks must be
brought online. If the data is not needed it can be cleared, in which case it will be lost and
data will differ between the host and disk. Unwritable cache is also called orphan data.
vdisk
A “virtual” disk comprising the capacity of one or more disks. The number of disks that a
vdisk can contain is determined by its RAID level.
volume
A portion of the capacity of a vdisk that can be presented as a storage device to a host.
volume copy
An independent
copy (clone) of the data in a volume. The capability to create volume
copies is a licensed feature that makes use of snapshot functionality.
WWN
World Wide Name. A globally unique 64-bit number that identifies a node process or
node port.
WWNN
World Wide Node Name. A globally unique 64-bit number that identifies a node process.
WWPN
World Wide Port Name. A globally unique 64-bit number that identifies a node port.