Dell PowerEdge R720 Technical Manual

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Dell PowerEdge R720 Technical Manual Manual pdf 27 page image

27 PowerEdge R720 and R720xd Technical Guide6 StorageThe Dell PowerEdge R720 and R720xd provide storage expandability that allows you to adapt toyour workload and operational demands. With comprehensive storage options, the R720 andR720xd offer various drive types, internal and external storage controllers, and different chassis andbackplanes for varied numbers of drives.Due to their massive internal storage capacities, the R720 and R720xd are optimized for a variety ofimplementations, including virtual desktop infrastructure (VDI) environments and collaborationsolutions. 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 acceleratedperformance over previous technologies. Dell Express Flash drives use PCIe lanes to connectdirectly 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 ortraditional solid- state drives.Internal storageThe R720 and R720xd are available in several hot- plug, hard- drive chassis options, as detailed inTable 11. Note that the chassis option must be selected at the point of purchase and cannot bechanged or upgraded later.Table 11. Chassis optionsPowerEdge server Chassis optionR72016 x 2.5” drives8 x 2.5” + 8 x 2.5” drives(with dual RAID controllers)8 x 2.5” drives8 x 2.5” + 4 x Express Flash drives8 x 3.5” drivesR720xd24 x 2.5” drives (front) +2 x 2.5” drives (back) 112 x 3.5” drives (front) +2 x 2.5” drives (back) 11 Back- accessible 2.5” drives are optional