Use the Creating Virtual Disk-to-Host Mappings
panel in the SAN Volume Controller Console to
create
a mapping between a virtual disk (VDisk) and a host.
Fields
- Choose a host
- Select
the host to map to this VDisk. If you have selected
multiple VDisks to map to a host, a list of all hosts is displayed.
If you
select a host that is already mapped to this VDisk, an error is displayed
after you click OK. If you have selected a single VDisk, only hosts
that are
not currently mapped to the VDisk are displayed.
- Allow the virtual disks to be mapped even if they are already
mapped to
a host
- This field is optional. Allows you to map VDisks to
a host that is already
mapped to a VDisk.
- SCSI LUN ID
- This
field is optional. Specify an ID for the SCSI LUN. If you do not
specify an ID, the next available SCSI LUN ID on the host adapter
is automatically
used.
Attributes
The
following attributes are displayed in the table:
- Name
- Displays the name of the VDisk.
- State
- Displays the current state of the VDisk. The following values
are possible:
- Offline
- Indicates the VDisk
is unavailable. One or more of the managed disks (MDisks)
that make up the VDisk are degraded or offline and consequently the
VDisk
is unavailable.
- Online
- Indicates
the VDisk is available. All the MDisks that make up the VDisk
are available. The status of a VDisk is online if the MDisk group
that is
presenting the VDisk is online.
- Degraded
- Indicates that the status of the VDisk is degraded. The VDisk
is degraded
if the VDisk is online to one node and offline to the other node or
if the
VDisk is online to one node and the other node is missing.
- Type
- Displays the
current VDisk type. The following values are possible:
- Striped
- Indicates that the VDisk is 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 is created from one MDisk that
is in the MDisk group. Extents are sequentially allocated on the MDisk.
- Image
- Indicates that
the VDisk is created from one MDisk that
is in the MDisk group. The image type provides a direct block-for-block
translation
from the MDisk to the VDisk. This type is used for MDisks that already
contain
data that was not written through the SAN Volume Controller.
Actions
The
following actions are available:
- OK
- Click
this button to create a VDisk-to-host mapping.
- Cancel
- Click this button to exit the panel without creating
a VDisk-to-host mapping.