The DiskStation DS1515 is aimed at home users as well as small businesses. Out of the box this NAS can handle five 3.5" hard drives, giving it a maximum capacity of 40TB using the latest 8TB drives, while the addition of two DX513 expansion units boosts capacity to a whopping 120TB. Powered by an Annapurna Labs Alpine AL-314 quad-core SoC, we are keen to see how well the DS1515 performs, particularly compared to its closest rival, the QNAP TS-651, which we've already benchmarked. From what we can see on paper, it looks like the DS1515 is trying to bring DS2015xs-like performance to home users at $650 versus the $1,500 that you have set forth for this kind power and expandable storage support. Read the complete review.