3U Rack Servers
Rack mount servers are designed to be fixed in a 19" wide cabinet. The height of the server is also standardized as multiples of 1.75 inches (44.45 mm) or one rack unit or U.
A 3U Server is 5.25 inches (13.34cm) high.
Dell PowerEdge 3U Rack Servers
|Model||CPU Type||CPU Sockets||DIMM Slots||Backplane Options|
|PowerEdge R940||Xeon Scalable||4||48||8x SFF 2.5-inch SAS/SATA drive bay backplane|
24x SFF 2.5-inch SAS/SATA drive bay backplane
12x SFF 2.5-inch SAS/SATA and 12x 2.5-inch NVMe drive bay backplane