NAKIVO Backup & Replication can automatically boost VM backup and replication speed as well as reduce the load on your network at the same time. With LAN-free data transfer, backup traffic does not saturate your production network while data transfer rates are dramatically increased, which results in faster backups and shorter backup windows. This is achieved with Hot Add and Direct SAN Access data transfer modes, which NAKIVO Backup & Replication automatically attempts to use for all VM backup and replication jobs.
If NAKIVO Backup & Replication is running on an ESXi server that has access to VM datastores, the product can read VM data directly from those VM datastores, bypassing the ESXi host’s TCP/IP stack that would otherwise impact every VM hosted on the ESXi server, and slow down the data transfer. NAKIVO Backup & Replication can mount (Hot Add) VM snapshots, and read VM data directly from VM datastores through the ESXi storage I/O stack.
Hot Add greatly improves backup speed and reduces the load on the ESXi server at the same time.
If your VMs are located on a Fiber Channel or an iSCSI storage area network (SAN), NAKIVO Backup & Replication can use the Direct SAN Access transport mode for VM backup, replication, and recovery. A SAN is a high-speed network that connects storage devices and servers, and it is generally segmented from the normal production network. SAN storages offer high levels of performance, reliability, and security. In the Direct SAN Access mode, VM data is read directly from a SAN storage device over Fiber Channel or ISCSI, which significantly improves performance and increases the speed of backup and replication jobs, while removing the load from your production network.
You can also force jobs to only use the Direct SAN Access mode, so that jobs do not fail over to the network mode and do not saturate your LAN, if SAN is unavailable.