I have a large amount of data 5T+ and growing. I need a backup solution that I will not outgrow soon. I'm tired of replacing full drives with a larger one. Right now I'm thinking RAID 5-6 with at least 4 4-5T drives. My question is are there alternatives (besides cloud) that I should be considering? Are there other methods that are more effective to achieve the same result? Since this will be part of a backup system performance is not the highest priority. Thanks