28 PowerEdge R720 and R720xd Technical Guide
6 Storage
The Dell PowerEdge R720 and R720xd provide storage expandability that allows you to adapt to
your workload and operational demands. With comprehensive storage options, the R720 and
R720xd offer various drive types, internal and external storage controllers, and different chassis and
backplanes for varied numbers of drives.
Due to their massive internal storage capacities, the R720 and R720xd are optimized for a variety of
implementations, including virtual desktop infrastructure (VDI) environments and collaboration
solutions. The R720 supports up to 16 and the R720xd supports up to 26 internal 2.5-inch drives.
Features such as Express Flash PCIe solid-state drives and CacheCade provide vastly accelerated
performance over previous technologies. Dell Express Flash drives use PCIe lanes to connect
directly to the processor and chipset and are easily accessible through a hot-plug drive bay.
CacheCade uses Dell PERC storage controllers to accelerate performance over hard drives or
traditional solid-state drives.
Internal storage
The R720 and R720xd are available in several hot-plug, hard-drive chassis options, as detailed in
Table 11. Note that the chassis option must be selected at the point of purchase and cannot be
changed or upgraded later.
Table 11. Chassis options
8 x 2.5” + 8 x 2.5” drives
(with dual RAID controllers)
8 x 2.5” + 4 x Express Flash
drives
24 x 2.5” drives (front) +
2 x 2.5” drives (back)
1
12 x 3.5” drives (front) +
2 x 2.5” drives (back)
1
1
Back-accessible 2.5” drives are optional
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General
Weight and Dimensions
