Is a VM running Cassandra with only 16GB for a staging agent sufficient enough?

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Usually for Cassandra these options should be set in jvm-server.options:
-Xms16G
-Xmx16G

...but with these settings the Cassandra service dies on a VM with 16G RAM total.
Now can this be lowerd for a staging agent or is it really a must to use 32GB RAM on the VM?

Marieke Goethals [SLC] [DevOps Catalyst] Selected answer as best 7th July 2023