[BuffaloJack]

> 685 million call records ? <
Probably 1 hard drive’s worth.

[FreeAtlanta]

right. Just archive them. It is suspicious that there might be stuff in the those records that they want to get rid of and are making a public statement to cover themselves.

[KarlInOhio]

If you are just storing time, duration, source number and location and destination number and location but no recording or motion tracking during the call, 32 bytes per call should be enoungh. That amounts to 22 GB or about 2% of a typical 1 TB drive.

I saw an estimate of 6 billion phone calls per day, so the NSA is disposing of about 2-3 hours of data.