partially erased DAT tar

To: alpha-osf-managers@xxxxxxxx
Subject: partially erased DAT tar
From: Lukas Rosenthaler <rosenthaler@xxxxxxxxxxxxx>
Date: Fri, 13 May 1994 11:48:05 +0200
Alternate-Recipient: Allowed
Conversion: Prohibited
Importance: High
Priority: Urgent
X400-Content-Type: P2-1984 (2)
X400-MTS-Identifier: [/PRMD=SWITCH/ADMD=ARCOM/C=CH/;940513104805]
X400-Originator: rosenthaler@xxxxxxxxxxxxx
X400-Received: by mta chx400.switch.ch in /PRMD=switch/ADMD=arcom/C=CH/; Relayed; Fri, 13 May 1994 10:47:46 +0200
X400-Received: by /PRMD=SWITCH/ADMD=ARCOM/C=CH/; Relayed; Fri, 13 May 1994 11:48:05 +0200
X400-Recipients: non-disclosure:;

HI,
we accidentally erased a DAT containing a *HUGE* tarfile by putting a very
small (empty) tarfile onto the DAT (by mixing up "tar -x" with "tar -c").
Is there some possibility within OSF/1 to restore the remaining rest of
the original tarfile ? Our configuration:
	DEC 3000/400 AXP OSF/1 1.3
	TLZ04

Any help is greatly appreciated!!! (Really :-(  

Lukas Rosenthaler