The default sizes will typically work for many environments but there are changes you can make to ensure that you do not run into problems later on if your partitions run out of space or you try to increase the memory allocated to the Service Console.
/boot – Change from 100MB to 384MB to allow extra space for any future ESX upgrades.
Swap: Change from 544MB to 1600MB, this should be twice the amount of memory that is dedicated to the Service Console. The default amount of memory devoted to the Service Console is 272MB which is why the default swap size is 541MB544MB. The recommended amount of memory for the Service Console is the maximum of 800MB which would require a 1600MB swap partition.
/var/log: Change from 2GB to 5GB to allow for extra space for log files.
Additionally you can create the following additional partitions to further segregate your drive to help protect the root directory from filling up.
/home – Create a partition of 2GB for any home directories that are created for local users on the ESX host.
/tmp – Create a partition of 2GB for the directory that is used to store temporary files.
/var – Create a partition of 4GB for the directory that is used to hold administrative log and configuration files.