Dell EMC PowerFlex Appliance and VxFlex Ready Node R640 Owner's Guide The PowerFlex appliance and VxFlex Ready Node R640 system is a 1U rack server that supports a maximum of: All Two Intel Xeon Scalable Processors 24 DIMM slots 8 or 10 x 2.5-inch drives or 0 drives for diskless configuration Two AC redundant power supply units SAS, SATA, SAS SED, and NVMe VxFlex Ready Node only HDD BOSSless configuration NOTE: All instances of SAS, SATA, SAS SED, and NVMe drives are referred to as drives in this document, unless specified otherwise. Child Topics Front view of the R640 system The front view displays the features available on the front of the R640 system. There are two available versions for the R640 an 8-drive or 10-drive system. Back view of the R640 system The back view displays the features available on the back of the R640 system. Locating the Service Tag of your system You can identify your system using the unique Express Service Code and Service Tag. Pull out the information tag in the front of the system to view the Express Service Code and Service Tag. Alternatively, the information may be on a sticker on the chassis of the system. System information tag The Information tag is a slide-out label panel that contains system information such as Service Tag, NIC, MAC address, and so on. If you have opted for the secure default access to iDRAC, the Information tag also contains the iDRAC secure default password.