Hot Hardware published a review on the Building A Personal Cloud With Seagate 12TB Hard Drives And Synology DS918+ NAS A quote from the article:

A few weeks back, Seagate launched an array of 12TB hard drives targeted a variety of market segments, from desktops to workstations and high-performance Network-Attached Servers. The Seagate Barracuda Pro, IronWolf, and IronWolf Pro are fundamentally similar, but each drive is tuned for specific applications. The Barracuda Pro is designed for HEDT and creative professional platforms. The IronWolf targets Network-Attached Servers (NAS) with one to eight bays. And the IronWolf Pro is designed for the same segment, but with servers with up to 18 bays. We also enlisted the help of Synology, which offers and array of NAS solutions for virtually every market segment. We?ve got a 4-bay model on-hand -- the sleek DS918+ -- and filled it with a quartet of IronWolf 12TB drives to build a roughly 36TB array, that's accessible from virtually anywhere...

 Building A Personal Cloud With Seagate 12TB Hard Drives And Synology DS918+ NAS @ HotHardware