Dell R720: two on board SATA connectors? Also where do people install OS? : r/homelab
Dell R720 Replace DVD Rom Slot for an SSD Drive
R720 Slimline Connector not Powering SSD : r/homelab
1.92TB SSD 12Gb/s 2.5" SAS Hard Drive with Tray for Dell PowerEdge R610, R620, R630, R710, R720, R730, R730XD, R720XD, T430, T630, and More : Amazon.in: Computers & Accessories
Installing internal PCI Slot SSD drive enclosures in a Dell R720 – Dan Langille's Other Diary
DELL PowerEdge R720 Server 2 x E5-2650 v2 1TB SSD + 8TB SAS 96GB RAM VMWARE ESXI / Hyper-V