Requirements

Local Volume Management Version 2 (LVM2)

The Linux machine should have Logical Volume Manager (LVM) 2. LVM version 2, or LVM2, is the default for Red Hat Enterprise Linux, which uses the device mapper driver contained in the 2.6 kernel. LVM2, which is almost completely compatible with the earlier LVM1 version, can be upgraded from versions of Red Hat Enterprise Linux running the 2.4 kernel.

Although upgrading from LVM1 to LVM2 is usually seamless, refer to Chapter 7.3 of the Red Hat System Administrator Guide for further details on more complex requirements and upgrading scenarios.

Upgrading Logical Volume Management Version 1 (LVM 1) to Logical Volume Management Version 2 (LVM 2)

Upgrading to LVM 2 is a bit trickier with root on Logical LVM, but it's not impossible. You need to queue up a kernel with device-mapper support and install the LVM2 tools (you might want to make a backup of the LVM 1 tools or find a rescue disk with the LVM tools built in, in case you need them before you're done). Then find a mkinitrd script that has support for your distro and LVM 2.

LVM vs LVM2
LVMLVM2
  • Limited command features compared to LVM2
  • Limit size
  • Volume mirroring support
  • Shared volume support with GFS
  • Transnational metadata for fast recovery
  • Cluster suite failover supported
  • Striped volume expansion
  • Latest version

Unallocated Space

Unallocated free disk space should be at least 10% of the logical volume.

Machine Requirement

Bare Metal requires a physical machine with Linux OS.

Server Requirement

Supported Linux OS Version

Operating SystemVersionCPU CoresMemory
CentOS Linux7-928 GB
Red Hat Enterprise (RHEL)7-928 GB
Rocky Linux828 GB
Ubuntu20.04 LTS - 24.04 LTS28 GB
Debian10-1228 GB

Restore .ISO File

Restore.iso file should be downloaded outside the machine, then restore should be done using Bare Metal Recovery Media.

Bootable Device

Bare Metal machines can boot from cd or USB drive.

Disk Space Requirement

Target restore destination should have enough space to back up the Bare Metal machine. During restore, USB is required as an additional working temporary storage (preferably minimum of 16 GB) for 300 GB and above backup source.