The biggest reason going for an enterprise vendor is support! As long you pay them big money you will get something that just works without worries. If somethin

The biggest reason going for an enterprise vendor is support! As long you pay them big money you will get something that just works without worries. If something should go wrong, they will be on your door ASAP and fix the problem for you. Very convenient. If you have expertise and is willing to do self support, creating your own DAS may be fine. Just keep in mind though, that things can go really wrong at the worst time when you are busy with something important. A lot of businesses do bad resource management and don't do proper planning. This can hurt you. Because we think most major storage vendors are way too expensive for us, and we don't have resources for self support, we have landed on using Aws S3 and Aws Glacier. At home I've been running a FreeBSD ZFS system for 8 years. Oh boy I have had many issues over the years because of bad hardware, cheap SATA cables, consumer grade SATA controllers, consumer grade network cards, consumer grade hot swap bays, consumer grade motherboards. But now I use only enterprise stuff, except from the hard drives, which has been very stable for the last two years.