High Availability (Failover) in TrueNAS SCALE ?

[vn_mnm]

Hello everyone,
From what I know, Proxmox runs on KVM and employs a Corosync protocol to run HA ( https://en.wikipedia.org/wiki/Corosync_Cluster_Engine ). Regarding TrueNAS SCALE :

1. Which HA (Failover) protocol(s) does it use ?
2. Is it built in the software iso file or something exclusive to iXSystems-built hardwares only ?

Thank you in advance.

 

[morganL]

HA clustering is done v ia glusterfs or Minio
HA (active-passive) is done via iX hardware with CARP protocol.

 

[vn_mnm]

HA clustering is done v ia glusterfs or Minio
HA (active-passive) is done via iX hardware with CARP protocol.

Thank you very much for your reply. Is HA active - passive also HA clustering ? If so, then what are the differences between the 2 above versus CARP ?

Thanks again buddy.

 

[morganL]

Thank you very much for your reply. Is HA active - passive also HA clustering ? If so, then what are the differences between the 2 above versus CARP ?

Thanks again buddy.

HA (Active-passive) has the 2 nodes sharing the same storage... they use CARP to move a Virtual IP address to the active node. If the ZFS storage pool fails, both nodes have lost the data.

HA Clustering is a shared nothing storage model... a whole node and its storage can fail or be taken off-line and the cluster can still serve data.
The data is mirrored or erasure coded across the nodes to protect it.