Direct NFS Access - User Guide for VMware vSphere
helpcenter.veeam.com › direct_nfs_accessJun 01, 2021 · The Direct NFS access is a recommended transport mode for VMs whose disks are located on NFS datastores. The Direct NFS access mode provides an alternative to the Network mode. When Veeam Backup & Replication processes VM data in the Network mode, it uses VMware VDDK to communicate with the ESXi host. This produces additional load on the ESXi host.
KB4167: NFS share cannot be used - Veeam Software
https://www.veeam.com/kb416719.05.2021 · When the next Guest Files restore begins the Veeam software detects that the NFS Datastore needs to be remounted and attempts to send requests for a new datastore to be created. This operation fails because the ESXi host kept the share name in the cache and does not allow the mounting of a share with the same name.
Troubleshooting vPower NFS Datastore ... - Veeam Software
www.veeam.com › kb1055Jul 19, 2011 · Test manually mounting the Veeam vPower NFS Datastore Follow the steps detailed in KB1284 to test manually adding the 'VeeamBackup_' datastore. If the 'VeeamBackup_' datastore could be manually added to the ESXi host, retry the restore operation, making sure to specify the same ESXi to which the datastore was able to be attached.
How to test manually mounting the Veeam vPower NFS Datastore
https://www.veeam.com/kb128406.10.2011 · Starting with Veeam Backup & Replication 9.5 U4, access to the NFS Share is restricted so that it is only accessible by the ESXi host during restore operations. When testing the manual mounting of the vPower NFS Datastore, the IP Authorization system must be disabled to allow the inbound connection from the ESXi host to the Mount Server.