Dell EMC PowerEdge C6520 Installation And Service Manual

Figure 16. 2.5-inch NVMe backplane chassis with one C6520 sled with up to 2 NVMe drivesC6400 chassis - No backplaneThe C6400 chassis with No-backplane configuration is optimized for use cases that require little to no local storage and primarilyuse external storage. Each C6520 sled in this chassis can still be optionally configured with a local M.2 boot drive. This chassisdoes not come with a drive backplane and no front drives are supported for any C6520 sled. Not having a drive backplanemaximizes air flow to the C6520 sleds, hence this configuration is the most thermally flexible among all chassis options.The C6400 chassis with No-backplane a good fit for use cases such as HPC, High Frequency Trading, SaaS/IaaS with externalstorage, Hadoop data node with external HDFS storage (such as Isilon).Figure 17. C6400 chassis - No backplaneC6400 chassis - 12 x 3.5-inch Direct Backplane drive configurationThe C6400 chassis with 12 x 3.5-inch direct backplane enables a total of 12 drives and up to 3 drives per C6520 sled.NOTE:● The chassis is optimized for high performance compute and cost effective large capacity storage.● Using an M.2 boot drive in each C6520 sled enables use of front 3.5-inch drives entirely for application data.● an NVMe PCI card can be used in the LP slot in each C6520 to provide high performance storage for say writes/cache.This makes the C6400 chassis with a 3.5-inch backplane a good fit for use cases such as Software Defined Storage,Hyper Converged Infrastructure, High Performance Computing nodes that need large storage.Figure 18. C6400 chassis - 12 x 3.5-inch Direct backplaneC6400 chassis - 3.5-inch Direct backplane chassis - Drive enumeration14 Dell EMC PowerEdge C6520 system overview