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Dell PowerProtect Data Manager Appliance 5.13.0.0 Administrator Guide for DM5500

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File System agent prerequisites

Review the following prerequisites before installing and using the File System agent in PowerProtect Data Manager Appliance.

Windows, Linux, and AIX prerequisites

  • Ensure that your host is a 64-bit system. PowerProtect Data Manager Appliance supports only 64-bit hosts.
  • Ensure that your host is a supported operating system version. Software compatibility information for the PowerProtect Data Manager Appliance software is provided in the E-Lab Navigator.
  • Ensure that all clocks on both the host and PowerProtect Data Manager Appliance are time-synced to the local NTP server to ensure discovery of the backups.
  • Ensure that the host and the PowerProtect Data Manager Appliance network can see and resolve each other. If PowerProtect Data Manager Appliance and the File System agent are registered in different domains, you must add IP address and Fully Qualified Domain Name (FQDN) entries on both the client and server.
    1. Browse to the path of the hosts file. For example, on Windows C:\Windows\System32\drivers\etc\hosts, and on Linux /etc/hosts.
    2. Add an entry to the hosts file, as in the following: 
      IP address     FQDN            common name
10.10.100.100  yourdomain.com  yourdomain
  • LVM and VxVM partitions or volumes are supported.
  • Physical partitions are supported only when using file-based backups.
  • Each volume group on LVM2 or VxVM must have at least 10% free space for a block-based backup to succeed. For successful Windows VSS snapshot during block-based or file-based backup, the free space requirement is 20%.
  • For file-based backups, ensure that the drive on which the File System agent is installed has adequate free space for the metadata record files that are created during a backup. Provide about 250 MB free space for each million files that you are backing up.
  • For any Hypervisor version 6.5 or earlier host with PowerStore storage attached, the Windows operating system deployment or installation cannot proceed. If the DiskMaxIOSize parameter is not configured with the proper value, the File System agent backup and restore operations fail. Ensure that you set the DiskMaxIOSize to 1024 KB.
  • Ensure that no service is using port 7010 or 7011. These ports must be reserved for File System agent operations.
  • Review the limitations in the section File System agent limitations.

Additional Linux prerequisites

  • File system discovery requires an ext3, ext4, XFS, or BTRFS file system type.
  • On the Linux hosts that have the UEFI Secure Boot option enabled, block-based backup drivers do not load, and the error message insmod: ERROR: could not insert module /lib/ modules/ 3.10.0-693.el7.x86_64/ extra/nsrbbb.ko: Required key not available appears. As a workaround, you can disable the Secure Boot option.
  • Ensure that the file system has the /etc/fstab entry. Without the /etc/fstab entry, discovery fails.
  • To enable file-level restores, complete the following:
    1. Log in to the system you are restoring from as root.
    2. Install iSCSI client packages.

      See the Operating System documentation for the installation procedure.

    3. For Service Start, choose Manually, and then click OK.
  • If installing the block-based backup driver, review the output of the cat /proc/sys/kernel/kptr_restrict file to verify that permissions to install the driver are set. If the value is set to 2, then there is a restriction that might result in block-based backup driver installation failure. Run the following command to change this setting:

    echo 1 > /proc/sys/kernel/kptr_restrict

  • Install the lsb_release package.

    See the Operating System documentation for the installation procedure.

Additional AIX prerequisites

  • File system discovery requires a JFS or JFS2 file system type.
  • Ensure that IBM XL C or C++ Runtime for AIX 16.1.0.7 and later is installed.

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