Unisphere and Unisphere Central 2020 R1 Administrator's Guide

Create a Volume and Map it to a Server

If a server requires additional storage and you do not want to use an existing volume, you can create and map a volume to the server in a single operation.

1. If you are connected to a Data Collector, select a Storage Center from the drop-down list in the left navigation pane of Unisphere Central.
2. From the STORAGE menu, click Servers.
   The Servers view is displayed.
3. Select the server to which to map a new volume.
4. Click (New), then select New Volume.
   The New Volume select box opens.
5. Leave the Volume Count field set to 1.
6. Type a name for the volume in the Name field.
7. Select a unit of storage from the drop-down menu and enter the size for the volume in the Configured Size field.
   The storage units are Bytes, KB, MB, GB, or TB.
8. Select a parent folder for the volume from the Volume Folder drop-down menu.
9. To force all data written to the to the lowest tier, select Import to Lowest Tier.
   NOTE When the Import To Lowest Tier check box is selected, snapshots are no longer automatically created, snapshot profiles cannot be edited, and the volume does not adhere to storage profiles.
10. To display this volume as available for Live Migrations, select Show In Live Migration Recommendation.
11. (Optional) Configure the remaining volume attributes as needed.
    • Server—Select a server to which to map the volume.
    • Advanced Mapping—Click Advanced Mapping to configure LUN settings, restrict mapping paths, configure multipathing, or present the volume as read-only.
    • Preallocate Storage—Select the Preallocate Storage checkbox to allocate storage to the volume before the volume is mapped to the server.
      NOTE When a volume is preallocated, the Storage Center allocates all of the space on the volume to the server. The Free Space of the volume is 0 MB and the Used/Active Space of the volume is the equal to the size of volume on Storage Center. To keep the volume preallocated when it is formatted on the server, the SCSI UNMAP feature must be disable on the server.
    • Snapshot Profiles—Click Change to select snapshot profiles for the volume.
    • Pause Snapshot Creation—Select this checkbox to prevent snapshots from being created of the volume.
    • Pause Snapshot Expiration—Select this chec box to temporarily stop snapshot expiration for the volume.
    • Allow Snapshots to coalesce into active Snapshot—Select this checkbox to allow space management snapshots to be combined into the next scheduled or manual snapshot.
    • Storage Profile—Select the storage profile to assign to the volume. Selecting the Recommended (All Tiers) storage profile allows the volume to take full advantage of data progression.
    • Storage Type—Select the storage type to assign to the volume.
    • Volume QoS Profile—Select the volume QoS profile to assign to the volume.
    • Group QoS Profile—Select the group QoS profile to assign to the volume.
    • Data Reduction Profile—Select Compression or Deduplication with Compression as the data reduction profile for the volume. None is selected by default.
12. Click OK.