We just recently upgraded our user storage capacity Storage Area Network with a strategy for the next five years. Currently 800 users use about 60 Terabytes of storage, the new SAN was installed with about 180 TB to last the company 5 years, this was an extrapolation of the current storage needs and the growth patterns of the last 5 years. Still, organizations do go through unexpected growth which we rely on policy and constant monitoring to keep disk storage usage in check. Has anyone heard of Distributed File Systems (DFS)? How can this approach help resolve the current issue presented in this Units DB? please explain in text about 100 words