[CentOS] 8-15 TB storage: any recommendations?

>> Your ROI of 5 minutes doesn't make any sense to me.
>>     
>
> Ok, Job submission and completion is what I am getting at.
>   

ROI generally refers to the time an expense takes to pay off.    Like, 
if buying $X worth of capital equipment will generate savings or 
additional income of $x over Y months, then Y is the ROI


your job cycle time, well, thats highly dependent on what your jobs 
/are/, something thats well outside the scope of this list.