Rebuild the node VSAN procedure

Hi all

We bought a cluster to VSAN 3 knots of Dell. The material was ordered without SD card in mirror. So the hypervisor is running on an installation that is not mirrored.

I have ordered from 3 additional SD cards and will reflect.

What I do is take members on only one node at a time and reflect SD cards, and then restore the configuration of ESXi.

What I've done so far is to back up the config ESXi powercli with the following command.

Get-VMHostFirmware - $vmhost ESXi_host_IP_address - BackupConfiguration - DestinationPath output_directory


So, my need is now to take down my first node and proceed with mirroring. Can someone give me the correct procedure to restore a VSAN node? Is it as simple as that...



  • Reinstall the same version of ESXi.
  • Run Set-VMHost - VMHost - ESXi_host_IP_address 'Maintenance' of State
  • Game-VMHostFirmware - VMHost ESXi_host_IP_address-restoration - SourcePath backup_file - HostUser HostPassword username - password


Will this make me return to the State that I was before?


Before taking to the bottom of the host, is it possible to move all the components for the other 2 members VSAN first?


Thanks in advance.

As Zach mentioned, your mirror to SD cards should not involve the need to rebuild a node VSAN. Maintenance mode ensure accessibility (OK for the maintenance of less than 1 hour) or full Migration would probably be enough for what you do. Depending on how much data you have and how fast your disks are full Migration may take a long time but is the safest option.

However if you need to rebuild a node due to the failure hardware host for example, you remove the disk for the failed VSAN host group and then remove the failed cluster host. Then set up a new host of work, reinstall ESXi, configure network/vmkernels etc., add back to the cluster VSAN and lasly re - add the disk to the new host group. I have also rebuilt hosts on my pile of RAID0 and HBA for example with this procedure, and it works fine.

Tags: VMware

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