"Storage" means the size of hard disk that will be given to you so if you have
seedbox with 500
GB,means that you can have only 500
GB stored in hard disk,to add more file you have to delete old ones
Uplink means your allowed upload speed,the higher the better and more expensive
Traffic means the amount of data that you are allowed to upload every month through you
seedbox plan
some seedboxes have unlimited traffic,meaning that you can upload any possible amount of data without your upload speed decreased
I made more than 25
TB upload per month using one
seedbox
other seedboxes restrict your amount of upload to specific size,EX 4
TB per month