Definition of main storage in English:
main storage
noun
ComputingThe total memory available to executing programs, equivalent to RAM on modern computers.
‘Once all the required details have been entered, the user enters an end command and the system transfers all the booking details to main storage?’- ‘In older processors, main storage was made from thousands of magnetic cores, each about the size of a pinhead.’
Are You Learning English? Here Are Our Top English Tips