(IBM Mainframe Discussion List) wrote:
In a message dated 2/7/2008 12:27:49 A.M. Central Standard Time,
[EMAIL PROTECTED] writes:
I believe someone on here said that the DOD said 15 writes over the
data set was good enough.
The latest (JUN 2001) DOD specification that I read on the Internet said six
times is enough, but you have to write certain bit patterns. The German DOD
wants seven times.
Gentlemen,
Don't you think, the "magic numbers" of the rewrites comes from voodoo
(or black magic) rather than from technological reasons ?
Any disk taken (stolen) from DASD array contains part of
gazillion-elements-puzzle. Without any overwrite. If you overwrite the
data, the only method to (try to) find the previous content is to use
microscope and watch magnetic domains. Try to find out what was the
previous value. More than gazillion-element-puzzle. After that, you
still have the previous excercise, that means set up array from
"independent" disks.
IMHO it is much easier and cheaper to pay someone for the data.
BTW: I would like to see *technical* justification of "15-times" or any
other number. Technical one, not "because mama said so".
--
Radoslaw Skorupka
Lodz, Poland
--
BRE Bank SA
ul. Senatorska 18
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www.brebank.pl
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NIP: 526-021-50-88
Wedug stanu na dzie 01.01.2007 r. kapita zakadowy BRE Banku SA (w caoci
opacony) wynosi 118.064.140 z. W zwizku z realizacj warunkowego
podwyszenia kapitau zakadowego, na podstawie uchwa XVI WZ z dnia 21.05.2003
r., kapita zakadowy BRE Banku SA moe ulec podwyszeniu do kwoty 118.760.528
z. Akcje w podwyszonym kapitale zakadowym bd w caoci opacone.
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