Many thanks to everyone for the great discussion on this topic! Does anyone have any thoughts on the cache? Do I need to worry about clearing that? If so, does anyone have any ideas on how to do that?
-----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of McBride, Catherine Sent: Friday, February 25, 2011 2:27 PM To: [email protected] Subject: Re: Question about wiping a DS8100 It really depends upon how stringent the requirements are in the shop where the person who posted the original question works. Here we have some additional requirements, other shops may not. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Mark Pace Sent: Friday, February 25, 2011 2:52 PM To: [email protected] Subject: Re: Question about wiping a DS8100 Plus, unlike a PC drive, on the DS8100 the data is stripped over multiple drives. Making data recovery on individual drives an exercise in futility. On Fri, Feb 25, 2011 at 3:00 PM, Robert A. Rosenberg <[email protected]>wrote: > At 14:34 -0600 on 02/24/2011, McBride, Catherine wrote about Re: > Question about wiping a DS8100: > > > Yes, using the web-based Storage Manager application to change the > ranks >> from one format to another will certainly work. >> I was told that changing from one format to the other 3 times would >> be best. >> > > That need to switch 3 times is based on your level of desire to > prevent recovery of your data. The first switch will remove all the > directory data and overwrite all the tracks. That makes all the data > vanish. However there are forensic methods that may be able to read > the erased data although it has been overwritten. Thus the additional > reformats (which makes the data harder to find on the drive using the > forensic methods). This is the same situation as with PC Hard Drives > and Secure Erase. You use a higher Secure Erase setting to rewrite the > tracks more times. Unless you expect that someone is going to go to > the trouble to do that level of data recovery, just removing the > directories and overwriting the tracks (so the data is no longer there for normal reading or viewing the tracks) should be enough. > > > ---------------------------------------------------------------------- > 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 > -- Mark D Pace Senior Systems Engineer Mainline Information Systems ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
