Hi Dave,
I can run 4 concurrent TRKFMT jobs, each against a different drawer in the RAMAC 2 racks and they run fine and finish the 4 cycles in about 1 hr 20 min. The problem is with the RAMAC 3. Even with just one running it's about 5 hours. I have 4 paths online and no other work going to the RAMAC 3. What do you use and how many passes do you make at your shop when you remove DASD? Thanks, Linda ----- Original Message ----- From: "David W. O'Brien (NIH/CIT) [C]" <obrie...@mail.nih.gov> To: IBM-MAIN@bama.ua.edu Sent: Wednesday, July 1, 2009 2:27:12 AM GMT -08:00 US/Canada Pacific Subject: Re: ERASEDATA - DASD disposal Linda, How many concurrent Trkfmt commands are you running? Are you running simultaneous commands against adjacent UCBs? IIRC the Ramac has 2 3390 addresses per drawer sharing the read/write assembly. I would only run 4 commands against addresses that were in unique drawers. Dave O'Brien NIH Contractor ________________________________________ From: IBM Mainframe Discussion List [ibm-m...@bama.ua.edu] On Behalf Of Linda Mooney [linda.lst...@comcast.net] Sent: Tuesday, June 30, 2009 7:36 PM To: IBM-MAIN@bama.ua.edu Subject: ERASEDATA - DASD disposal Greetings! I am in the process of retiring 3 RAMAC 2 racks, each with a 3990 mod 6 controller, and 1 RAMAC 3 rack, with a 9293 controller. All data has been moved to new DASD. The RAMAC DASD will be surplused so I have to be sure that the data has been wiped clean and nothing is recoverable - w ithout physically damaging the devices. All of the DASD is 3390-3. For the RAMAC2 data wipe I have been using ICKDSF release 17.0 TRKFMT UNITADDRESS(B40) VERIFY(ZSDLZ6) ERASEDATA - CYLRANGE(0,5000) CYCLES(4) That takes about 20 minutes per cycle. Our maintenance vendor recommended 4 cycles. That seems to be proceeding fine. I am having a problem with the RAMAC 3. I tried the same coding with the RAMAC 3 and it took about 5 hours to run (per address) as compared to roughly 1 hour 20 minutes on the RAMAC 2 . All devices are 3390-3, each controller has 4 paths, low system activity generally with no other work on these strings, and the long run time was consistent for several packs on the RAMAC 3. Should I use some other ICKDSF command to wipe the RAMAC3? Any t houghts on why the run time would be so mu ch longer for the RAMAC3? Do you consider the 4 passes with TRKFMT enough to be sure that the data is really gone? TIA, Linda Mooney ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu 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 lists...@bama.ua.edu 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 lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
