How to size a new on prem Jira/Confluence install.

[Ted Byng]

Hi All,

  Wondering is someone has some suggestions or can point me to some documentation. We are getting ready to stand up an on prem Jira/Confluence install. License will be for 100 users and should get pretty serious use. Looking for how many boxes and how big should we start with. Also can Jira and Confluence be run from the same box and use the same DB instance where we would only have two boxes? Any help is greatly appreciated.

Thanks,

Ted

[Florian · Accepted solution]

Hi.
We serve about 250 users in a VM (one for Jira and one for Confluence). Both VMs also run their own DB. The VM are provisioned with 4 Cores and I think 4GB RAM Each (if I remember right). Storage for attachments is mounted over NFS from our NetApp. The virtual hard drives are also on our NetApp. So far no complains from our users.

After a fresh start it feels a bit slow (especially Jira). But after a while caching seems to do a pretty good job. We did not run any benchmarks yet but overall performance feels well. 

We started a year ago with a few users. Since June we added about 50 to 60 new users each month. No degradation so far. 

[Ted Byng]

Hi Florian,

 Thanks for the input! One question. You have one VM each for Jira and Confluence and you said both VMs run their own DB. Do you have the DB installed on each of the two VMs or on one/two other VMs?

Thanks,

Ted

[Florian]

We use Postgress locally installed on the VMs. This has various advantages for us:

- easy backup (snapshot)

- high availability (VM Cluster)

- scalability (just add resources to the VM)

- low latency (no network traffic between the application and the database)

- high security (the VMs are encapsulated by our firewall. Even when somebody hacks jira or other parts like nginx or the database or anything else they will not come far.)

Well of course the underlying metal is quiet large. I don’t know how many physical CPU cores and how much RAM we provide. This is not part of my job. Jira and Confluence are just two systems of more then 200 we host for our internal customers. 

[Jack Brickey · Accepted solution]

Hi Ted, welcome to the Community. See if this article helps - jira-server-sizing-guide 

[Ted Byng]

Hi Jack, Love your pic! Yes it does thanks. I also found a sizing guide for confluence. So do you know if it's ok to run both Jira and Confluence from the same box with another box for sql or whatever to hold the two dbs? Trying to give mgt an idea of how many boxes and how big for a starter system with 100 users.

Thanks,

Ted

[Jack Brickey]

To be honest I’m not absolutely sure because I haven’t used server in many years now. With that said that is exactly how we used to do it and we had a team of maybe about 5000 users.