Use
the Split a Copy from VDisk panel in the SAN Volume Controller Console to
create a separate VDisk from a synchronized VDisk copy.
Attributes
The
following attributes are displayed in the table:
- Select
- Allows you to select the copy to split from a selected VDisk.
Note: Only
one row can be selected at a time.
- Copy
ID
- Displays the system-assigned identifier for the VDisk copy.
- Status
- Displays the current
status state of the VDisk copy. The following values
are possible:
- Offline
- Indicates that the
VDisk copy is unavailable. One or more of the managed
disks (MDisks) that make up the VDisk copy are degraded or offline
and consequently
the VDisk is unavailable.
- Online
- Indicates
that the copy of the VDisk is available. All the MDisks that
make up the VDisk are available.
- Synchronize
- Displays if the VDisk copies are
synchronized. The following values are possible:
- Yes
- Indicates that the VDisk copy is synchronized.
- No
- Indicates that the VDisk copy is not synchronized.
- Primary
- Indicates
if the VDisk copy is the primary copy.
- MDisk
Group ID
- Displays the system-assigned identifier for the managed
disk (MDisk) group
that is associated with the VDisk copy.
- MDisk
Group Name
- Displays the name of the MDisk group associated
with the VDisk copy.
- Type
- Displays
the type of VDisk copy. The following values are possible:
- Striped
- Indicates that the VDisk copy was
created from multiple
MDisks that are in the MDisk group. Extents are allocated on the MDisks
in
the specified order.
- Sequential
- Indicates
that the VDisk copy was created from one MDisk
that is in the MDisk group. Extents are sequentially allocated on
the MDisk.
- Image
- Indicates
that the VDisk copy was created from one MDisk
that is in the MDisk group. Provides a direct block-for-block translation
from the MDisk to the VDisk copy. This is intended for MDisks that
already
contain data that was not written through the SAN Volume Controller.
- Used Capacity
- Displays
the amount of space that has been used by the VDisk copy.
- Real Capacity
- Displays the real size of a VDisk
copy. This size is can either be a percentage
of capacity or a specific amount of space in megabytes (MB).
- Free Capacity
- Displays the amount of
space that is available to the VDisk copy.
Fields
The
following fields can be updated:
- Name
- Enter
a name for the new VDisk that the split copy will create.
- Force split
- Select this if you want
to force the split to proceed even though the
copy you are trying to split is not synchronized.
Note: The split
copy might
not be point-in-time consistent.
- Select
the I/O Group
- Select an I/O group from the list
of available I/O groups
for the VDisk that you are creating or let the system choose the I/O
group.
Note: By
default, the VDisk is created in the same I/O group as the VDisk that
the
copy is split from.
- Select Preferred
Node
- Select the preferred node
for the VDisk
that you are creating or let the system choose the preferred node.
Note: When
you let the system choose the preferred node, the system performs
workload
balancing by managing the I/O traffic for the VDisks across multiple
nodes.
- Select
the cache mode
- Select the type of cache mode to use for the
new VDisks. The following
values are possible:
- Read/Write
- Indicates
that all read and write I/O operations that are performed by
the new VDisk are stored in the cache.
- None
- Indicates that all read and write I/O operations that are performed
by
the new VDisk are not stored in the cache.
- Unit device identifier
- Enter
a unit device identifier for the new VDisks. This field is used
only by hosts that are using the OpenVMS operating system. For other
operating
systems, setting a unit device identifier is not required.
Actions
The
following actions are available:
- OK
- Click
this button to split the copy from a selected VDisk.
- Cancel
- Click this button to exit the panel without
splitting the copy from a
selected VDisk.