The transfer of data from memory to disk. Whenever you command your application to save the document you're working on, the program is actually flushing its buffer (writing the contents of one or more reserved areas of memory to the hard disk). See buffer overflow and buffering.
Go Flush Your Cold Buffer!
Try this one out on your colleagues. Tell them to "go flush their cold buffers!" A cold buffer is a reserved area of memory that either contains stale data or data that has not yet been saved to disk ("flushed to the disk").
Better yet, try "go flush your cold buffer into your SCSI DASD" (pronounced "scuz-ee daz-dee"), which means "save the data to the SCSI drive." The most important thing is that you say this without cracking a smile, and do expect a puzzled grin from a systems professional.
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