Is this unit RAID capable?

Yes, the Dell Precision T7610 is RAID capable.

Questions & Answers: Refurbished: Dell Precision T7610 CAD Workstation PC, 2x Intel Xeon E5-2660 CPUs, 32GB DDR3 RAM, 2TB SATA HDDs, DVD-RW, Windows 10 Pro

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Dell Precision T7610 CAD Workstation PC, 2x Intel Xeon E5-2660 CPUs, 32GB DDR3 RAM, 2TB SATA HDDs, DVD-RW, Windows 10 Pro

Dell Precision T7610 Workstation, 2x Intel Xeon E5-2660 CPUs, 32GB DDR3 RAM DDR3, 2TB SATA HDDs, DVD-RW, Windows 10 Pro
Built for professional work such as design, content creation, rendering, engineering, and data-heavy applications.
The 2x Intel Xeon E5-2660 (2.2GHz) processor provides responsive performance for design, rendering, engineering, and other demanding professional tasks.
32GB DDR3 memory supports smooth multitasking and helps handle larger professional projects and files.
2TB HDD provides practical, reliable capacity for files, projects, and everyday data storage.
Quadro K600 supports professional visual work such as CAD, content creation, rendering, and multi-display setups; Windows 10 Pro is preinstalled and ready for the out-of-box setup experience.