To add to what Chris said, this is what TAC gave us last year as well, in addition):
>>In order to increase all the parameters- disk space, memory and CPU, I would recommend the procedure described in the following sk:-
https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solut...
>>The above Sk shows, you can pick the "size" you want and preset the CPU,HDD and memory according to the image selected.
To see what sizes are supported, you may have a look at the following SK:-
https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solut...
>>In order to just increase the disk space, you may follow the sk linked below,
https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solut...
Note:- We support in-place upgrades for azure gateways now, but not for mgmt server. So, as an alternative to the above procedure for the mgmt server specifically, you may consider, re-deploying a bigger R81.10 VM with required HDD,CPU and memory.
Andy
Best,
Andy
"Have a great day and if its not, change it"