IBM 2145UPS-1U Hardware Installation Manual page 204

System storage san volume controller
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consistent copy
consistent-stopped
consistent-synchronized
container
copied
copying
Copy Services
counterpart SAN
cross-volume consistency
D
data migration
degraded
166
IBM System Storage SAN Volume Controller: Hardware Installation Guide
In a Metro or Global Mirror relationship, a copy of a secondary virtual
disk (VDisk) that is identical to the primary VDisk from the viewpoint of a
host system, even if a power failure occurred while I/O activity was in
progress.
In a Global Mirror relationship, the state that occurs when the secondary
virtual disk (VDisk) contains a consistent image, but the image might be
out-of-date with respect to the primary VDisk. This state can happen when
a relationship was in the consistent-synchronized state when an error
occurred that forced a freeze of the consistency group. This state can also
happen when a relationship is created with the create-consistent flag set to
TRUE.
In a Global Mirror relationship, the status condition that occurs when the
primary virtual disk (VDisk) is accessible for read and write I/O
operations. The secondary VDisk is accessible for read-only I/O operations.
See also primary virtual disk and secondary virtual disk.
A data storage location; for example, a file, directory, or device.
A software object that holds or organizes other software objects or entities.
In a FlashCopy mapping, a state that indicates that a copy has been started
after the copy relationship was created. The copy process is complete and
the target disk has no further dependence on the source disk.
A status condition that describes the state of a pair of virtual disks
(VDisks) that have a copy relationship. The copy process has been started
but the two virtual disks are not yet synchronized.
The services that enable you to copy virtual disks (VDisks): FlashCopy,
Metro, and Global Mirror.
A nonredundant portion of a redundant storage area network (SAN). A
counterpart SAN provides all the connectivity of the redundant SAN but
without the redundancy. Each counterpart SANs provides an alternate path
for each SAN-attached device. See also redundant SAN.
In SAN Volume Controller, a consistency group property that guarantees
consistency between virtual disks when an application issues dependent
write operations that span multiple virtual disks.
The movement of data from one physical location to another without
disrupting I/O operations.
Pertaining to a valid configuration that has suffered a failure but continues
to be supported and legal. Typically, a repair action can be performed on a
degraded configuration to restore it to a valid configuration.

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