ICKDSF??? This is a Virtual Tape System, with an DS5000 as internal (hidden) 
disk cache.

Kees.

> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
> Behalf Of Edward Gould
> Sent: 11 August, 2017 2:24
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: Re: How to erase TS7740 data before scrap
> 
> > On Aug 10, 2017, at 5:16 PM, Mike Schwab <mike.a.sch...@gmail.com>
> wrote:
> >
> > How are tracks provisioned?
> > If fixed provisioning, then ICKDSF TRKFMT CYL(0,14) CYCLES(1) will
> > write b'00000000', b'11111111', and b'01010101' or b'10101010' for the
> > full track for three erasing writes to each track.  Increase 1 for
> > more erases.  Erase all tracks in all cylinders of all volumes.
> > If dynamic provisioning, then erase all volumes with extra erases to
> > catch the excess capacity above the capacity of the volumes.
> 
> Mike,
> 
> I think it depends on ICKDSF and which command is used to format the
> volume.
> Its been 20 or 30 years since the 3380 came out but IMSM the fast
> initialize does it differently than the full initialize.
> My memory is sketchy here but I *THINK* a EOF is written on each track
> if a fast init is used. I will defer to you on the full init.
> I learned of the fast init from a good friend at the WSC. I started
> using it and never had awn issue.
> 
> Ed
> >
> > On Thu, Aug 10, 2017 at 9:49 AM, Carlos Bodra - Pessoal
> > <cbo...@terra.com.br> wrote:
> >> We are replacing IBM TS7740 with new TS7760 and need to do a Cluster
> Cleanup
> >> (FC 4017 – This feature is a factory default button, clear all data,
> all
> >> tables, etc..). IBM says that this feature is withdrawn and no more
> >> available.
> >>
> >>
> >>
> >> What can we use in place of it or any suggestion about how to clear
> data
> >> from it?
> >>
> >>
> >>
> >>
> >>
> >> Carlos Bodra
> >>
> >> IBM System Certified System z
> >>
> >> São Paulo - Brazil
> >>
> >>
> >>
> >>
> >> ---------------------------------------------------------------------
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> >
> >
> > --
> > Mike A Schwab, Springfield IL USA
> > Where do Forest Rangers go to get away from it all?
> >
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