Elastic Cloud availability zones

[liorg2]

Hello,

In the cloud management when choosing , when choosing 2 availability zones,
is the data replicated or splitted between data centers, but does it also mean, that both data centers are participating queries effort ?
How exactly does it help in day to day please?

I guess that nodes are splitted between data centers.
if that is true, is that slower than 1 data center? and also isn't that enough too have snapshots?

[Christian_Dahlqvist]

Distributing a cluster across 2 or more availability zones increases resilience dnd availability as long as your indices are configured to have a replica. All data nodes will participate in indexing and querying which can lead to improved query performance. You can also have one come go down (had happened) and still have s a n available and functioning cluster. Snapshots are taken periodically which means you may lose data if you have to restore one. It is also not instantaneous so will lead to downtime.

[liorg2]

thanks @Christian_Dahlqvist
is there a benefit in mutli az for ML nodes?

[Christian_Dahlqvist]

Yes, it improves reliability and availability.