Flashcopy Presets - IBM Storwize V5010 Manual

Table 10-6 lists the supported combinations of FlashCopy and remote copy. In the table,
remote copy
Table 10-6 FlashCopy and remote copy interaction
Component
FlashCopy
Source
FlashCopy
Target

10.3.18 FlashCopy presets

The IBM Spectrum Virtualize GUI interface provides three FlashCopy presets (Snapshot,
Clone, and Backup) to simplify the more common FlashCopy operations.
Although these presets meet most FlashCopy requirements, they do not support all possible
FlashCopy options. If more specialized options are required that are not supported by the
presets, the options must be performed by using CLI commands.
This section describes the preset options and their use cases.
Snapshot
This preset creates a copy-on-write point-in-time copy. The snapshot is not intended to be an
independent copy. Instead, the copy is used to maintain a view of the production data at the
time that the snapshot is created. Therefore, the snapshot holds only the data from regions of
the production volume that changed since the snapshot was created. Because the snapshot
preset uses thin provisioning, only the capacity that is required for the changes is used.
Snapshot uses the following preset parameters:
Background copy: None
Incremental: No
Delete after completion: No
Cleaning rate: No
Primary copy source pool: Target pool
512
Implementing the IBM Storwize V5000 Gen2 with IBM Spectrum Virtualize V8.1
refers to Metro Mirror and Global Mirror.
Remote copy primary site
Supported
This is a supported combination
and has the following
restrictions:
Issuing a stop -force
might cause the remote
copy relationship to be fully
resynchronized.
Code level must be 6.2.x or
later.
I/O Group must be the
same.
Remote copy secondary site
Supported latency: When the
FlashCopy relationship is in the
preparing and prepared states,
the cache at the remote copy
secondary site operates in
write-through mode.
This process adds latency to
the latent remote copy
relationship.
This is a supported combination
with the major restriction that
the FlashCopy mapping cannot
be copying, stopping, or
suspended. Otherwise, the
restrictions are the same as at
the remote copy primary site.