Re: Disk Percent Busy, out of whack??

So it seems to me there are two reasons for wanting to erase disk.

1) So that it is hard, perhaps nearly but not quite, impossible to obtain usable information from them. For example a distribution company may not want customer or inventory information made available. Writing all the disks even once via an install of the LIC essentially meets this goal. Even if you could get the data back it would cost an exorbitant amount and be prone to error. Possible? I suppose but at what cost? Much easier to follow the operator to the corner store after work and grab the nightly tapes from their Jeep.

The disks retain value on the used market.

2) So that it is impossible to get any data from these disks, ever. To be certain of this only destruction is acceptable. Fortunately this is simple. For all IBM i SCSI disks you pull them, lay them flat, and strike the top cover with a 2 lb hammer 'briskly'. The platters will shatter into thousands of shards instantly. Evidence is obtained by shaking them and listening to the satisfying tinkle inside.

The disks now have recycle value only. Some brass, some cast aluminum, a circuit board, and a wee bit of copper. The shiny bits are not recyclable. Pouring all those bits into a bucket and mixing them makes an already impossible task even more so.

- Larry "DrFranken" Bolhuis

www.frankeni.com
www.iDevCloud.com
www.iInTheCloud.com

On 10/9/2014 9:25 PM, CRPence wrote:

On 30-Sep-2014 14:05 -0500, rob@xxxxxxxxx wrote:

<<SNIP>> CRTNWSSTG to boot...
In fact, I am going to start a plethora of instances of that command
as soon as I get the OS installed on this machine. Just my way of
initializing all the disk before shipping this old P6 out the door.

As I have noted before, if that work being performed against the
disks is part of some attempt to complete what should be an effective
disk /clearing/ [ignoring multiple rewrites and differing patterns of
data written] aiming to protect sensitive data from those who might have
access to those physical disks after they leave the premises, then that
attempt is seriously flawed; possibly with a great possibility of
exposing what is proprietary information of the company and\or the
clients and customers.
<http://archive.midrange.com/midrange-l/201403/msg00157.html>
<http://archive.midrange.com/midrange-l/201403/msg00198.html>
The above links are both in a thread with subject "DOD erase":
<http://archive.midrange.com/midrange-l/201403/threads.html#00129>