> -----Original Message-----
> From: IBM Mainframe Discussion List 
> [mailto:[EMAIL PROTECTED] On Behalf Of Jim Marshall
> Sent: Thursday, January 05, 2006 2:10 PM
> To: [email protected]
> Subject: Erase IBM 3590 Cartridges
> 
> 
> I have some IBM 3590 cartridges, J & K, which I need to 
> ensure all the data
> is off of them. Does any know of any utility which will write 
> binary zeros
> all down the cartridge until the end. I still have an old 
> program from the
> US Air Force which would go down to the end two tapemarks, 
> skip over them
> and write binary zeros out to the end. This worked well on 
> ugly round tape
> and I do not remember if I tried it on cartridges. I would 
> have probably
> specified TRTCH=NOCOMP to override compressing all them 
> zeros. I have no
> clue what compression would do for things if I tried it on IBM 3590s.

CA-1 has a utility to do that CTSDEU.

//STEP1 EXEC PGM=CTSDEU,PARM='ERASE'
//SYSPRINT DD SYSOUT=*
//SYSUT1 DD UNIT=tape,VOL=SER=volser

DFSMSrmm uses EDGINERS - see the book.



> 
> I suggested that we just degauss the cartridges and write a 
> new label. My
> SYSPROGs seem to think IBM maintains some cartridge 
> statistics internal to
> the cartridge itself and these would be lost.

If you degauss, you will destroy the tape. All 3590 tapes have a "servo
track".

> 
> Any guidance would be appreciated on this.
> 
> Jim Marshall
> 

--
John McKown
Senior Systems Programmer
UICI Insurance Center
Information Technology

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