Before You Begin

In this article

    Before you perform Instant Recovery, consider the following:

    • We highly recommend to use a separate host for a mount server to free up the VBR server RAM and avoid SQL issues due to lack of RAM.

    Minimum 512 MB of RAM on a mount server is required per each VM disk that you want instantly recover. For example, if you restore a VM with 4 disks, you need additional 2 GB of RAM on a mount server.

    • Make sure that all NFS services except vPower NFS Services are stopped.
    • ARM architecture VMs are not supported.
    • Instant Recovery to Nutanix AHV is supported for Nutanix AOS 6.0 and later.
    • Instant Recovery is not supported for backups made in 1.0 version of Veeam Aviability for Nutanix AHV. In this case, you can perform only entire VM restore.
    • You must add the Nutanix AHV cluster (to which you want to restore machines) to the backup infrastructure. AHV Backup Proxy it is not required for Instant Recovery.
    • All required drivers should be installed initially before the instant recovery process. You cannot add or modify drivers in the VM during the instant recovery launch.
    • Veeam Backup for Nutanix AHV requires 64 MB of RAM for a VM via Instant Restore. If you have a VM with less than 64 MB of RAM, Veeam Backup for Nutanix AHV will increase this RAM to 64 MB during the restore process.
    • You can restore a machine from a backup that has at least one successfully created restore point.
    • If you restore a machine to the production network, make sure that the original machine is powered off to avoid conflicts.
    • If a restored VM has an attached volume group, the disks from the volume group will not be restored.
    • If you restore a Windows machine from a non-AHV backup, the SCSI drivers, NutanixGuestTools, they will be not installed on the published Windows VM. If you plan to perform Instant Recovery of such Windows VMs to an AHV cluster, install SCSI drivers and NutanixGuestTools on this machine before you back up the machine.
    • If you restore a Linux machine, make sure that file systems (also called devices or partitions) listed in the /etc/fstab file are mounted using UUIDs as their names. Device names are not supported as they may change during the instant recovery operation that will cause VM boot failures.
    • When you instantly restore a VM from old backups, the restored VM has default virtual hardware settings: 2 CPU cores, 4 GB RAM and 1 network adapter. If you want to change the default settings:
    • Turn off the VM. Note that you must not switch off the instant recovery session before turning off the VM.
    • Set the required virtual resources (CPU/RAM/bootable disk) in the Nutanix AHV cluster web console.
    • If it is necessary, open CVM terminal via SSH and update boot configuration via acli:

    admin@NTNX-20FM3F010153-B-CVM:{ip_arrd}:~$ acli

    <acropolis> vm.update {vm_name} uefi_boot=true