On Friday, 06/23/2006 at 04:16 AST, "Lewis, David (SCI TW)" <[EMAIL PROTECTED]> wrote: > With today's DASD the only way to ensure that the data is gone is to write > garbage to cylinder after cylinder, volume after volume, until the device can > no longer store anymore data.
Look at ICKDSF TRKFMT FROMRANGE(0,0) ERASEDATA CYCLES(n). It writes a "special pattern" (as opposed to binary zeroes, I guess). Maybe it's "good enough". A company's data policy should indicate how good the erasure must be. Alan Altmark z/VM Development IBM Endicott
