Add a Primary Storage
A primary storage is one or more servers that store volume files of VM instances. These files include root volume snapshots, data volume snapshots, image caches, root volumes, and data volumes.
In the wizard, you can add the following types of primary storage:
Note:
- LocalStorage: uses the disks of the host for storage.
- Network Sharing Storage: supports NFS, Shared Mount Point, and Ceph.
- NFS allows you to store files by using the NFS protocol.
- Shared Mount Point provides network sharing storage by using popular distributed file systems including MooseFS, GlusterFS, OCFS2, and GFS2.
- Ceph stores files in the format of distributed blocks.

The type of primary storage is associated with the type of backup storage:
- If you use ImageStore backup storage, you can use a primary storage of the LocalStorage, NFS, Share Mount Point, or Ceph type.
- If you use a Ceph backup storage, you can use only Ceph primary storage.
If you need to add a primary storage of the SharedBlock type, exit the wizard and add a primary storage on the primary storage management page.