To backup and restore an image you will use the copy command, Page 127 in the owners manual. support.dell.com/.../en_cli.pdf Use the copy running-config destination-url command to copy the current configuration file to a network server using TFTP, . Use the copy source-url running-config command to load a configuration file from a network server to the running device configuration file. Hope this info helps, Thanks.
During our office's last power outage, our PowerConnect 5548 stack (3 units) lost its configuration. How would I go about backing up the stack's configuration (just in case this happens again)? As well, how would I restore the backup? We have a single stack of 2x 5548P units and 1x 5548 unit. Thanks. 
Backup PowerConnect 5548 Configuration