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The original was posted on /r/sysadmin by /u/Hudson0804 on 2024-01-23 08:27:51+00:00.
Hi All,
I have some doubts about the way our cluster has been configure dn the past and now looking at moving forwards with new hardware maybe I have an opportunity to change this.
Currently we have 2 "data" sites - 4 servers plus nimble storage on each site, 8 servers in a failover cluster with cluster shared volumes. The nimble storage replicate between the two sites and presents the storage via iscsi.
We have been told that this is an unsupported setup having a cluster span two sites - due to the way the storage is configured. I am not in anyway sure that this is correct or not but essentially the argument is that even though the storage is all on the same logical network the distance between sites introduces a potential issue with delay if something were to happen at site 1 and site 2 had not yet received the updates.
Is the current setup we have supported?
We are looking at introducing some new hosts and retiring the old ones, we're also planning on removing the old hosts and effectively spinning down site 2 - apart from the nimble storage which will continue to replicate data for "DR" purposes, whilst also having a couple of servers cold ready to start up and manually configure essential services if site 1 was to go offline.
Is there anything that you would advice on before I push ahead with this?
Thanks for reading.