Well I'm planning to buy soon more 150TB hdd, I know how to plot disks and make mining rig, but I'm not sure how strong computer I need to run that miner and which O.S. to use, I'm using now Windows 10.
You have embedded gpu in you cpu, you could try jminer to use it for mining.
The age of a cpu is not all, your current cpu has only 2 cores/threads possible. With 40TB it is normal that it is used 100% while mining.