Move Ceph size from 2 to 3

[starnetwork]

Hi,
I have Cluster with 11 nodes, each node 2 disks of 2TB SSD
all disks are in Ceph pool with size = 2
now, I want to move to size = 3
there is any downtime / problem we should expect during this change?

Regards,

 

[sb-jw]

Normally not, if you have configured your cluster and your crush map / rules correctly, there is no impact expected.

But you need to make sure you have enough space left.