title: What to do if we have multiple disk types attached in a CentOS7 VM?
body: <p>I would like to ask for your expertise on how to create one single partition disk from two disks</p>
  <p>Currently, my main disk is 'sda' where my machine is running
  the second disk is mounted and used for backups only
  The Third Disk (NEW) is attached on the VM as is named 'nvme0n1'</p>
  <p>This third and new disk is exactly the same brand and model as the main one with the only difference that at the moment of creating the VM I set up the disk as whole physical disk and formatted for Linux only (don't know if this info is relevant, but is here now)</p>
  <p>I wonder if is possible to create a combination of the disk 1 (sda) and 3 (nvme0n1) as one disk only?</p>
  <p>What could be the best approach without losing all the data here?
  if wonder, Can I attach a Fourth disk for Full VM Backup and do a complete format of both disk and then create something like a RAID 0 with both NVME disk (1&amp;3) and then pass all over?</p>
  <p>Any suggestion and procedure will be kindly appreciated.
  Thanks!</p>
  <pre><code>NAME                    MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
  sda                       8:0    0 465.8G  0 disk 
  ├─sda1                    8:1    0   500M  0 part /boot
  └─sda2                    8:2    0 465.3G  0 part /
  sdb                       8:16   0     1T  0 disk 
  └─sdb1                    8:17   0  1024G  0 part 
    └─vgBackup2-lvBackup2 253:0    0  1024G  0 lvm  /home/user/backup
  sr0                      11:0    1  1024M  0 rom  
  nvme0n1                 259:0    0   400G  0 disk 
  └─nvme0n1p1             259:1    0   400G  0 part 
  </code></pre>