An event I help run moved to 4K video on the A cam this year, causing us to rethink our storage. To this point, we'd been offloading to a 3TB external hard drive, which has worked just fine thus far. It comfortably held four events' worth of footage, but it wasn't being backed up, and 4K would eat the remaining capacity quickly. Thus was an idea born.
Earlier in the year, Craigslist had struck again, and I scored an ugly tower built around an i7-980 and Radeon 6870 for twenty whole dollars. I was just supposed to come home with a keyboard... But back to the build. To keep write speeds up for bulk transfers, we decided on a 4x2TB RAID10. Bought three refurb Ultrastars from Newegg to supplement the single WD Green on hand and lassoed them together via X58's onboard RAID. Yes, that's mismatching drives. No, I don't care. Previous owner had installed Win10, but didn't leave me with a key. Thus, the 500GB 2.5" drive that it came with stays.
Discovery 1: Don't mess with the Marvell RAID. Only two ports doesn't give you many options. Discovery 2: Ultrastars run warm. Like warning temp within 2 hours warm. At idle. And this case has no front intake fan. Therefore, after far too long messing around with fan configs, I decide on transplant. Into a terrible freebie case that is one of the few in my collection that will accept EIGHT drives. Oh yes, did I mention the 4TB backup drive for the RAID and the 3TB to mirror the external drive? Plus the obligatory optical drive. I'm obtuse like that.
Discovery 3: Chosen case has a front fan mount. Discovery 4: It's a b%$&#-and-a-half to get a fan in there. I don't think this variant of the chassis was meant to have one. But it does now, and the Ultrafurnaces are much happier. Discovery 5: Motherboard extends behind the drive cage, making SATA routing a right PITA. Luckily, the PSU the donor came with was modular, so cable routing was much less terrible than it could have been.
To wrap the whole thing up, I yanked the completely unnecessary 6870, replacing it with a spare 5450. You know, despite being old as the hills, those things make great "I just need video output" cards.