While I wouldn't bet the mortgage, I really doubt that any MVS software can access a physical sector that is no longer part of an MVS volume, except perhaps by invoking special hardware features provided by the manufacturer. I looked at FDR documentation at a customers site a few years ago and don't recall seeing anything that appeared to deal with this situation.
I know of at least three players in the DASD marketplace and most seem to keep information details of the special features under wraps. -----Original Message----- From: Pat Mihalec [mailto:snip] Sent: Tuesday, July 15, 2008 1:44 PM To: [email protected] Subject: Re: Clearing out DASD Sorry if this has already been memtioned, I have not been following the discussion. I have used FDRERASE from Innovation Data Processing to clear DASD that we got rid of. It meets the security requirements, it does not cost much and it is easy to use. Pat Mihalec Rush University Medical Center Senior System Programmer (312) 942-8386 [EMAIL PROTECTED] "Schwarz, Barry A" Mainframe Discussion List <[email protected]> 07/15/2008 03:39 PM Please respond to IBM Mainframe Discussion List <[email protected]> To [email protected] cc Subject Re: Clearing out DASD If your DASD does anything similar to the STK SVA 9500 I have, MVS software becomes irrelevant. Every time a track is written to, the hardware places the entire track's data in a new set of "sectors" on some physical hard disk in the box. All this is done invisibly to MVS. You basically never know where the physical write will go to and therefore cannot tell if there are any sectors which have not been over-written. Unless the DASD hardware comes with something akin to "data destruct" with some kind of certification regarding how it is implemented, you really cannot do a DOD acceptable clear. I doubt if it would satisfy HIPAA or SOX either. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
