System Requirements: Per Cloudera page hadoop minimum requirements:the VM takes 4GB RAM and 3GB of disk space. This means your laptop should have more than that (I'd recommend 8GB+). Storage-wise, as long as you have enough to test with small and medium-sized data sets (10s of GB), you'll be fine. As for the CPU, if your machine has that amount of RAM you'll most likely be fine. I'm using a single-node Dell inspiron 5530 with 4GB of Ram for testing my small jobs and it works just fine.With 4GB Ram lapto starting to hang so better you use 8GB RAM.