If the drives were configured for striping (RAID 5, etc) you would need to determine the drives used in the stripe set, the tracks on those drives, and the order. Doable? Yes, but at what time and cost.
Dennis Roach GHG Corporation Lockheed Martin Mission Services Facilities Design and Operations Contract NASA/JSC Address: 2100 Space Park Drive LM-15-4BH Houston, Texas 77058 Mail: P.O. Box 58487 Mail Code H4C Houston, Texas 77258 Phone: Voice: (281)336-5027 Cell: (713)591-1059 Fax: (281)336-5410 E-Mail: [email protected] All opinions expressed by me are mine and may not agree with my employer or any person, company, or thing, living or dead, on or near this or any other planet, moon, asteroid, or other spatial object, natural or manufactured, since the beginning of time. > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Ron Hawkins > Sent: Wednesday, July 29, 2009 5:31 PM > To: [email protected] > Subject: Re: Print disk map? > > Barry, > > > It would depend on what criteria the auditor is using. For SVA is the > data > in the clear from the Operating System after RACF erase-on-scratch? > Absolutely not. > > Can the disk drive be removed from the SVA and the data found in the > clear > through standard SCSI/SATA IO? Absolutely yes if it is still in the > free > pool. > > Regarding classified defense data, these standards are concerned with > scrubbing the track path so that residual data at the edge of the track > cannot be deciphered microscopically. This is physical security, where > RACF > erase-on-scratch is Operating System security, like passwords and > permissions. > > Just as an aside, does anyone realize that their VTL and VSM disk > caches are > exposed to all the same issues? I'm sure you all do, but I thought I'd > ask > anyway. > > Ron > > > -----Original Message----- > > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of > > Schwarz, Barry A > > Sent: Wednesday, July 29, 2009 2:12 PM > > To: [email protected] > > Subject: Re: [IBM-MAIN] Print disk map? > > > > If you are trying to appease an ignorant auditor, it is probably > fine. > > If you are looking for certification (such as HIPAA or PCI), you may > be > > able to sell it. If you are working with classified defense data, > they > > will laugh you out of the room. The OP provided no clue. > > > > -----Original Message----- > > From: Paul Gilmartin [mailto:[email protected]] > > Sent: Wednesday, July 29, 2009 1:39 PM > > To: [email protected] > > Subject: Re: Print disk map? > > > > On Wed, 29 Jul 2009 10:46:40 -0700, Schwarz, Barry A wrote: > > > > >While Binyamin's advice will show what you asked, there is still one > > >potential problem remaining. If you are not using an actual > physical > > >CDK device (most of us are using SCSI devices that emulate 3390s > etc), > > >You need to confirm that writing over an MVS track physically writes > to > > >the same sectors the track was simulated on. We use an STK SVA 9500 > > and > > >every write to a track causes that track to be relocated within the > > >array. The net result is that while MVS only sees the new data when > > >reading the track, several generations of previous data are lying > > >around. You need to determine if this situation exists in your > > hardware > > >and, if so, whether it is an issue for your organization. > > > > > OTOH, I believe such devices will typically not allocate > > physical space to a logical track until that logical track > > is written. So residual data will not be available to > > access methods or EXCP. It might be necessary to remove > > the SCSI and read it on another platform. Or maybe there's > > a maintenance mode. > > > > --------------------------------------------------------------------- > - > > 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
