2 host , with cluster manual replication or singles with PVE-zsync?

[openaspace]

Hi.
I run fundamentally a single VPS with internal 4tb raw virtual disk and 1 one vm firewall, now I need to guarantee that the service will be up in the case of failure of the at the moment the single host.

It's better to work with a cluster of two hosts with manual migration/restore or works with PVE-zsync ?

Could be better a cluster of 2 hosts if i will expand to 3 hosts in the future?...

 

[Glowsome]

Mentioning the word 'single' and or 'manual' anywhere in your question means you have an issue at that point.

in short:

• having 1 host means if its down you are out of the game
• having a cluster with only local storage means you are still screwed when one node is down

High-availabillity would mean :

• having multiple hosts as cluster (pref 3 , as a 2-node cluster means you dont have a cluster when one host goes down) (also called a poor-man's cluster)
• having shared storage, so the storage where the vms are located are accessible individually by every node
• setup HA part of vms in PVE to ensure failover if a clusternode fails