Before configuring hosts to access the storage system, ensure that the following tasks are completed.
- Install and configure the system using the Initial Configuration wizard.
- Use Unisphere or the CLI to configure NAS servers or interfaces, or iSCSI or Fibre Channel (FC) LUNs, on the storage system.
Managed and generic host objects
There are two ways of deploying traditional Unity VMFS and NFS datastores to vSphere:
- Automatically using managed host objects
- Manually using generic host objects
Managed host objects
Managed host objects use a set of APIs on the array to prepare vSphere for Unity VMFS or NFS datastores and mounts them automatically.
For example, when deploying an iSCSI VMFS datastore:
- The user completes the following actions on the storage system:
- Creates the iSCSI interface.
- Creates the VMFS datastore.
- Grants host access to the datastore.
- The following processes then occur automatically:
- The storage system sends a request to the associated hosts to add the iSCSI interface for the VMFS datastore to the iSCSI table in vSphere.
- vSphere confirms to the storage system that the LUN device (for the VMFS datastore) has been added to the target table in vSphere.
- The storage system sends a request to vSphere to format that LUN device as a VMFS datastore.
Generic host objects
Unity File VVol and Block VVol datastores use generic host objects by default. Refer to Setting up a host to use Unity VVol datastores for more information.
You may also want to use generic host objects in the following cases:
- You want to boot the host from the storage system
- You are using non-ESXi hosts for backup purposes
- You are deploying an NFS datastore on a NAS server using NFSv4.0 or later (managed host objects deploy NFS datastores as the default NFSv3.0).
To use generic host objects, manually set up the connection to the datastores as described in Manually setting up the iSCSI connection for a Unity VMFS datastore or Manually setting up the connection to a Unity NFS datastore
VMware vSphere versions
The VMware vSphere instructions in this guide may not be consistent with your version of vSphere. Always use the VMware documentation for your vSphere version for the most up-to-date detailed instructions.
Note: All VVols-related vSphere instructions in this guide are based on the vSphere 6.x web client as the VVols feature is not available in previous VMware releases of vSphere.