Hi, it's just an interrogation but, if I have 3 node and add 1 disk to each node and make it in a HA configuration and one disk dies. Do I lose any data (exept the data between the last replication)? Or will I be able to replace the disk like nothing ever happen.
HA needs shared storage. Using local disks will not work at all (nothing is replicated).
If you use ZFS (all of my machines do this) you can replicate the virtual disks of a VM to the other two nodes. Replication can automatically run once a day down to once every minute. But not every second. So the "copy" is nearly identical, but not 100%.
In the case that one of these disks fail then all data on that specific disk is lost. But the other two have copies - dated from the the last replication. Now you replace physically the damaged disk (for which you have to follow some steps, just connecting power and SATA is not enough) .
Storage Replication: https://pve.proxmox.com/pve-docs/chapter-pvesr.html
Storage Types: https://pve.proxmox.com/pve-docs/chapter-pvesm.html#_storage_types
PS: personally I do establish local redundancy via ZFS by establishing mirrors. When one disk dies my VMs do not notice this ;-)
In the case that one of these disks fail then all data on that specific disk is lost. But the other two have copies - dated from the the last replication. Now you replace physically the damaged disk (for which you have to follow some steps, just connecting power and SATA is not enough) .
Storage Replication: https://pve.proxmox.com/pve-docs/chapter-pvesr.html
Storage Types: https://pve.proxmox.com/pve-docs/chapter-pvesm.html#_storage_types
PS: personally I do establish local redundancy via ZFS by establishing mirrors. When one disk dies my VMs do not notice this ;-)
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