In addition to the R720 back-panel features, the R720xd also includes two optional 2.5-inch
hot-plug drives in the back of the system.
The chassis design of the R720 and R720xd is optimized for easy access to components and for
airflow for effective and efficient cooling. The R720 and R720xd support up to 24 DIMMs, 2
processors, hot-plug redundant fans, and many other components and features that are described
in this guide.
PowerEdge R720 and R720xd Technical Guide
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