Be sure to back up regularly your important data (including program) files stored in this instrument to a CD-R or other backup medium. Keysight Technologies shall not be liable for any data damages caused by troubles of this instrument.
You can make backup files on the hard disk of an external PC using the following methods:
You can access to D drive of the E5072A from an external PC via LAN, and copy your important data files on the D drive to the external PC. See Accessing Hard Disk of E5072A from External PC for details.
You can transfer your important data files on the D drive of the E5072A to the external PC using :MMEM:TRAN command via GPIB.
Do not modify any files or folders in drives other than D drive. Doing so will cause malfunctions.