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Hello amit-g, depending on the storage there are parameter you can set. The cinder nfs driver allows via the nfs_mount_options to set specific mount parameters. Please read here your documentation of your NFS storage for the optimal parameter. A second place for tuning NFS is on the compute host itself for example by increasing for the sunrpc.tcp_slot_table_entries. But also here, check with the storage vendor what is the optimal value. And a last small tuning parameter is the mtu size of your network. Higher mtu sizes need less network transactions.