HP P2000 G3 MSA Reference Manual page 67

secondary volume
secret
SES
single-port disk
snap pool
snapshot
SRA
ULP
unwritable cache data Cache data that has not been written to disk and is associated with a volume that no longer
vdisk
volume
volume copy
WWN
WWNN
WWPN
The volume that is the destination for data in a replication set and that is not accessible to
hosts. For disaster recovery purposes, if the primary volume goes offline, a secondary
volume can be designated as the primary volume. The secondary volume exists in a
secondary vdisk in a secondary (or remote) storage system.
The contents of a secondary volume are in a constant state of flux and are not in a
consistent state while a replication is in process. Only snapshots that are associated with a
secondary volume are data consistent.
For use with CHAP, a password that is shared between an initiator and a target to enable
authentication.
SCSI Enclosure Services.
A disk that is connected to both controllers so its data path is not fault-tolerant. Single-port
disk types are identified with the suffix -S.
A volume that stores data that is specific to snapshots of an associated master volume,
including copy-on-write data and data written explicitly to the snapshots. A snap pool
cannot be mapped.
A "virtual" volume that preserves the state of a master volume's data as it existed when the
snapshot was created. Data associated with a snapshot is recorded in both the master
volume and in its associated snap pool. A snapshot can be mapped and written to. The
capability to create snapshots is a licensed feature. Snapshots that can be mapped to hosts
are counted against the snapshot-license limit, whereas transient and unmappable
snapshots are not.
Storage Replication Adapter. A host-based software component that allows VMware's Site
Recovery Manager to manage the storage-system firmware's disaster recovery management
(DRM) features, automating disaster-recovery failover and failback tasks. The SRA uses the
CLI XML API to control the storage system. See also DRM.
Unified LUN Presentation. A RAID controller feature that enables a host to access mapped
volumes through any controller host port. ULP incorporates Asymmetric Logical Unit Access
(ALUA) extensions.
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.
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.
A portion of the capacity of a vdisk that can be presented as a storage device to a host.
An independent copy (clone) of the data in a volume. The capability to create volume
copies makes use of snapshot functionality.
World Wide Name. A globally unique 64-bit number that identifies a node process or
node port.
World Wide Node Name. A globally unique 64-bit number that identifies a node process.
World Wide Port Name. A globally unique 64-bit number that identifies a node port.
HP P2000 G3 MSA System Event Descriptions Reference Guide 67