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Upgrading to 2203


rimespoon

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CVAD

Are active sessions affected in any shape or form when performing an in-place upgrade of Delivery controllers (7.15>1912 and 1912>2203)? Two delivery controllers per site.

How reliable is the rollback process (reverting to DB backup and DDC snaps) in the event something was to break during the in-place upgrade? Should it just work in the event a rollback is required?

PVS

Can you run mixed OS PVS servers in the same site? This would be temporary, whilst the vDisks/streaming is migrated to the newer OS servers.

 

 

 

 

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Are active sessions affected in any shape or form when performing an in-place upgrade of Delivery controllers ?

 

In theory not as only new sessions should be affected, but in practise the answer is yes. Reconnections to existing sessions which normally happen transparantly also pass through here. In addition the upgrade takes a long time so people will want to log on in that time. Imagine if you happen to have a small network outage in that timeframe and no one can reconnect...My personal experience is that the only good and controlled way to upgrade these is during planned downtime because it can go horribly wrong.

 

 

How reliable is the rollback process (reverting to DB backup and DDC snaps) in the event something was to break during the in-place upgrade? 

 

As long as you have a snapshot of your DDC and a backup of your DB of that same point in time you should be fine. It should work fine after rolling back to those 2.

 

 

Can you run mixed OS PVS servers in the same site? 

 

Yes, as long as you keep running the same version of PVS on them. This I have done multiple times. For instance 2 PVS servers running 2112. You change the loadbalancing for each pvs image to only load from 1 pvs server and after the next nightly reboot (or force rebalancing on-the-fly) you can do that second PVS (which is now standby) whatever you like. This includes clean format, reinstalling with 2019 OS and then reinstall the same version of PVS (check up front it's still compatible !). After that you will typically want to edit the DHCP options to make sure the PXE requests arrive at the new reinstalled pvs server so you can put the first one in standby etc...so yes it's perfectly possible as long as you know equally perfectly  and exactly what you are doing. If unsure, plan downtime !

 

 

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