CU 3 for 7.15 LTSR

[Dennis Haschke]

Hello,
we use XA 7.15 LTSR CU2 and we plan to upgrade to 7.15 CU3.
Is it necessary to upgrade all components (license server, pvs, ddc, storefront, vda agent) in a relativly short time range or is it possible to upgrade on one day License Server, another day storefront and so on...…….

Regards
Dennis

[James Kindon]

no set specific time frames, but you want to bring it all up as close together as you can. I typically follow the usual upgrade order for components

[Dennis Haschke]

Thanks, is it possible to install the CU 3 in production time if i have 2 DDC, PVS and Storefront servers?

[James Kindon]

I never do anything in production time personally 

[Dennis Haschke]

I try this yesterday evening when only some connections are alive…….works.
 

Describes in the article: https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/upgrade-migrate/upgrade.html?_ga=2.147653183.924710991.1551691940-250645343.1542615285

Leaving half of the Controllers active allows users to access the Site. VDAs can register with the remaining Controllers. There may be times when the Site has reduced capacity because fewer Controllers are available. The upgrade causes only a brief interruption in establishing new client connections during the final database upgrade steps. The upgraded Controllers cannot process requests until the entire site is upgraded.

If your Site has only one Controller, it is inoperable during the upgrade.