Hardware upgrade from 13000 series on r77.30 to 16000/23000 series on r80.30

[Nas]

Planning hardware upgrade in coming months as we got some old 13000 series firewalls and most likely moving to 23000 series.

13000 are on r77.30

Has anyone done a hardware upgrade like this?

13000 on r77.30  to 23000 on r80.30

Will there be any issues/packet loss?

[Kaspars_Zibarts]

Yes, we have done it, even it was VSX, no real packet loss as long as you plan your upgrade. All depends on your environment specifics.

I would personally go with R80.40 at this stage as it seems to be fairly stable with latest Take.

[Nas]

Can you share steps please? Anything specific in plan!

Our setups are active standby cluster of 2 (vrrp mostly)

[Kaspars_Zibarts]

Installation and Upgrade guide actually has all steps listed. Plus it lists dependencies and limitations. I have written upgrade steps here in community, feel free to search for those but remember that I wrote those before multi-version cluster upgrade existed. Therefore my best advise is to use the admin guide

https://sc1.checkpoint.com/documents/R80.40/WebAdminGuides/EN/CP_R80.40_Installation_and_Upgrade_Gui... 

[Nas]

Upgrade guide showing  sw upgrade only on a particular hw model.

When hw changing too then that info i cant see.

[Kaspars_Zibarts]

Here's an example I did in 2017 how you can avoid packet loss using by disabling OOS packet drops

Gateway-Cluster-Hardware-Upgrade