19″/2 ST1100 series

Storage Computer in 19″/2 form factor
The ST1100 series provides a powerful network storage solution. It supports up to five 2.5″ SATA disks, software RAID, and a wide range of interfaces and options. It is optimized for low size, weight and power (SWaP) to meet industry requirements without sacrificing reliability, ruggedness or performance.

You can install your own NAS software or use the Linux-based NAS software from MilDef.