_SetUpaMirrorFRequirePlatforms
The platform the mirrors are running on must meet the same minimum requirements for Bitbucket Data Center - Check the Supported platforms for detailed requirements, including those for Java and Git, that apply to each mirror.
- By design, each mirror (standalone or in a mirror farm) must run with an internal H2 database - Using an external database is highly discouraged for mirrors and will compromise performance significantly.
The platform the mirrors are running on must have an OpenSSH client installed - The mirror will need an OpenSSH client installed to fetch changes from the primary Bitbucket Server.
If you are using Bitbucket version 7.9 or higher, then you must use OpenSSH version 7.2 or higher to avoid sync failures for repositories.
The platform the mirrors are running on should not be under-provisioned - Just as with your primary Bitbucket Data Center instance, your mirrors need to be provisioned with enough CPU, memory, and I/O resources to handle their peak workload. See Scaling Bitbucket Server for more information.