Linda Mooney pisze:
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 no
In a message dated 7/6/2009 1:50:12 P.M. Central Daylight Time,
barry.a.schw...@boeing.com writes:
But even if the space has been allocated to a subsequent file, there is
no guarantee that any data was actually written the disk.
>>
Think what I did on the ICEBERG-low these many moons was
But even if the space has been allocated to a subsequent file, there is
no guarantee that any data was actually written the disk.
-Original Message-
From: Robert A. Rosenberg
Sent: Thursday, July 02, 2009 5:58 PM
To: IBM-MAIN@bama.ua.edu
Subject: Re: ERASEDATA - DASD disposal
This issue
On Fri, 3 Jul 2009 07:24:02 -0400, Klein, Kenneth wrote:
> Even more insidious are the methods of reading how strongly the
>magnetized bit is positive or negative. If the bit is on, but not as
>strongly as others, it might have been off before getting flipped. If
>very strongly on it might have be
Gerhard Postpischil
Sent: Thursday, July 02, 2009 5:29 PM
To: IBM-MAIN@bama.ua.edu
Subject: Re: ERASEDATA - DASD disposal
Eric Bielefeld wrote:
> I always wondered if it was possible to read data if binary zeros or
> some other pattern were written to the disk. I thought that it would
>
At 18:20 -0500 on 07/02/2009, Paul Gilmartin wrote about Re:
ERASEDATA - DASD disposal:
The cited article and its followups point out that it's
a greater concern to erase all temporary copies of the
file (how often do you S(ave) during an E(dit) session?)
This issue is handled by doi
On Thu, 2 Jul 2009 16:49:24 -0500, Tom Harper wrote:
>Gerhard,
>
>According to this source, that theory [track edge residue]
>is in question:
>
>http://www.h-online.com/security/Secure-deletion-a-single-overwrite-will-do-it--/news/112432
>
>(watch the wrap).
>
Thanks. I long wondered, given that d
: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On
Behalf Of Gerhard Postpischil
Sent: Thursday, July 02, 2009 4:29 PM
To: IBM-MAIN@bama.ua.edu
Subject: Re: ERASEDATA - DASD disposal
Eric Bielefeld wrote:
> I always wondered if it was possible to read data if binary zeros or
> some
Eric Bielefeld wrote:
I always wondered if it was possible to read data if binary zeros or
some other pattern were written to the disk. I thought that it would be
very hard, which the article quoted seemed to agree with. But then, I
noticed that the writer of the article didn't sign his name.
Thanks, Matthew! I'll have a look at the REVAL
Linda
- Original Message -
From: "Matthew Stitt"
To: IBM-MAIN@bama.ua.edu
Sent: Wednesday, July 1, 2009 3:33:02 PM GMT -08:00 US/Canada Pacific
Subject: Re: ERASEDATA - DASD disposal
The last time I needed
ld
Sr. Systems Programmer
Milwaukee, Wisconsin
414-475-7434
- Original Message -
From: "Norbert Friemel"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Thursday, July 02, 2009 11:08 AM
Subject: Re: ERASEDATA - DASD disposal
On Tue, 30 Jun 2009 23:36:08 +, Linda Mooney
On Tue, 30 Jun 2009 23:36:08 +, Linda Mooney wrote:
> Do you consider the 4 passes with TRKFMT enough to be sure that the  data
is really gone?
http://www.h-online.com/security/news/112432
Norbert Friemel
--
For IBM-MAI
On Thu, Jul 2nd, 2009 at 10:13 PM, Jim Marshall wrote:
> It really depends on your definition of "Wiped Clean". No amount of
> passes will get rid of the data where it could not be recovered.
> Have to measure the worth of the data if someone "really, really"
> wanted to recover it.
My attitude
>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 ithou
;
>Thanks,
>
>
>
>Linda
>
>
>
>
>- Original Message -
>From: "Barry A Schwarz"
>To: IBM-MAIN@bama.ua.edu
>Sent: Wednesday, July 1, 2009 11:57:18 AM GMT -08:00 US/Canada Pacific
>Subject: Re: ERASEDATA - DASD disposal
>
>I hope you r
To: IBM-MAIN@bama.ua.edu
Sent: Wednesday, July 1, 2009 11:57:18 AM GMT -08:00 US/Canada Pacific
Subject: Re: ERASEDATA - DASD disposal
I hope you realize that "nothing is recoverable" is very vague. Most of the
time, the phrase means "not worth the effort to recover&qu
al context, and
that may push you closer to a physical destruction scenario.
Good luck.
-Original Message-
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of
Linda Mooney
Sent: Tuesday, June 30, 2009 6:36 PM
To: IBM-MAIN@bama.ua.edu
Subject: ERASEDATA -
tion.
-Original Message-
From: Linda Mooney [mailto:linda.lst...@comcast.net]
Sent: Tuesday, June 30, 2009 4:36 PM
To: IBM-MAIN@bama.ua.edu
Subject: ERASEDATA - DASD disposal
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 c
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 ag
n
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 proce
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 recoverabl
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