You create volumes to add
storage capacity to an application-specific workload, and to make
the created volumes visible to a specific host or host cluster. In
addition, the volume creation sequence provides options to allocate
specific amounts of capacity to each volume you want to create.
- Valid hosts or host clusters
exist under the Hosts tile.
- Host port identifiers
have been defined for the host.
- Before creating a DA-enabled
volume, the host connection you are planning to use must support
DA. If any of the host connections on the controllers in your storage
array do not support DA, the associated hosts cannot access data on
DA-enabled volumes. ThinkSystem DE Series storage only supports DA
between the controller and the drives.
Keep these
guidelines in mind when you assign volumes:
- A host's operating
system can have specific limits on how many volumes the host can access.
Keep this limitation in mind when you create volumes for use by a
particular host.
- You can define one assignment
for each volume in the storage array.
- Assigned volumes are
shared between controllers in the storage array.
- The same logical unit
number (LUN) cannot be used twice by a host or a host cluster to access
a volume. You must use a unique LUN.
- If you want to speed the process for creating volumes, you can
skip the host assignment step so that newly created volumes are initialized
offline.
Note: Assigning
a volume to a host will fail if you try to assign a volume to a
host cluster that conflicts with an established assignment for a host
in the host clusters.
- Select .
- Select .
The Create Volumes dialog box appears.
- From the drop-down
list, select a specific host or host cluster to which you want to
assign volumes, or choose to assign the host or host cluster at a
later time.
- To continue
the volume creation sequence for the selected host or host cluster,
click Next, and go to Step 2: Select a workload for a volume.
The Select Workload dialog box appears.