Hello,
what is the correct way to evacuate an esxi host in a 2-node stretched cluster in order to change the hardware or maybe reinstall esxi ?
A full evacuation would violate the SFFT=1 policy.
Thanks in advance & Regards
@mike-p , Correct you cannot use Full Data Migration option in such a cluster.
Thus you are limited to using Ensure Accessibility option - it is advisable to take good backups before doing this as the data will be FTT=0 until the other node is back in the cluster.
Note that reinstalling ESXi doesn't remove the vSAN data nor Disk-Groups, it is also possible to change hardware and retain the Disk-Group structure, that being said, this will just lower the delta-resync time and not offer any additional redundancy benefit (as the data would be stale).
@mike-p , Correct you cannot use Full Data Migration option in such a cluster.
Thus you are limited to using Ensure Accessibility option - it is advisable to take good backups before doing this as the data will be FTT=0 until the other node is back in the cluster.
Note that reinstalling ESXi doesn't remove the vSAN data nor Disk-Groups, it is also possible to change hardware and retain the Disk-Group structure, that being said, this will just lower the delta-resync time and not offer any additional redundancy benefit (as the data would be stale).
ok, in case of reinstalling esxi the maschines are still accessible as long as the witness host is availlable?
@mike-p Yes, assuming the data is stored as FTT=1, remaining data-node+Witness satisfies both 1. Full copy of data available and 2. Quorum is met (2/3 components = majority available).