Upgrade strategy

Certified Lead Developer

Hi all,

 

We are upgrading Appian. We see two types of upgrade strategies:

 

1) Stop and backup the server, install a new Appian server and migrate the appian stuff from the backup. Then start the new upgraded server. Following the update guide.

2) Install a parallel server in order to ensure high availability and maintain both environments for some time. Eventually migrate the data to the upgraded server.

 

Is option 2) possible / recommended? In order to have 2 running servers per environment we might need to have 2 Appian licenses. 

 

Many thanks

  Discussion posts and replies are publicly visible

Parents
  • Hi,


    If you are upgrading to 18.3 version, there are some major changes in architecture. There is no Application server requirement. You need to check your topology before starting upgrade. Better to discuss with Appian Support for more clarity.

    Edited Response : Upgrade of one instance at a time is not supported at this time. Better to have approach to reduce down time.


    Thanks

  • 0
    Certified Lead Developer
    in reply to Umesh Patel
    Hi Umeshp, thanks for your answer. We dont have high availability in place, we only have one standalone server, but there is a thought that we could keep the service up during the upgrade time by installing a second appian server that would be up while the other server is being upgraded and maintaining two parallel and independent appian environments. I dont think this is the recommended way to do to the upgrade but I wanted to ask the community for thoughts.
Reply
  • 0
    Certified Lead Developer
    in reply to Umesh Patel
    Hi Umeshp, thanks for your answer. We dont have high availability in place, we only have one standalone server, but there is a thought that we could keep the service up during the upgrade time by installing a second appian server that would be up while the other server is being upgraded and maintaining two parallel and independent appian environments. I dont think this is the recommended way to do to the upgrade but I wanted to ask the community for thoughts.
Children