How does Fortanix DSM as XKS affect KMS service reliability and performance?

How does Fortanix DSM as XKS affect KMS service reliability and performance?

Using the on-premises DSM or DSM SaaS as an External Key Store makes your services dependent on the availability of the DSM solution. Fortanix defines a Service Level Agreement for DSM SaaS, and the availability of on-premises DSM clusters may be impacted by network connectivity, firewall rules, and so on. The decision to use XKS should be made with both data protection and availability requirements in mind, and a trade-off between the two must be considered.