Does ise patch installation cause downtime?

[CCC3]

I'm trying to patch install 6ea ise consisting of pan/mnt and psn in version 3.2.

Does downtime occur between tasks?

[Georg Pauwen]

Hello,

as far as I recall, there is a downtime because the ISE node reboots. It is recommended to do any patch installations during a scheduled maintenance window...

https://www.cisco.com/c/en/us/support/docs/security/identity-services-engine/215406-patch-installation-on-ise-and-faq-durin.html