We've used DTDUTIL (Disk-to-Tape-to-Disk) several times to recover data
from disks in danger of imminent failure, but I'm not certain if this
is certified for all disk devices and/or interfaces.  Also, because the
system must be started in single-disk, single-user mode, it cannot be
used for LDEV 1.  It's saved us from volume set reloads several times
on our older system, though!

Lee Gunter
Regence Blue Cross and Blue Shield of Oregon/ Regence HMO Oregon

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______________________________ Reply Separator _________________________________
Subject: [HP3000-L] Re : bit by bit copy utility
Author:  Christian Lheureux <[log in to unmask]> at ~INTERNET
Date:    7/22/97 6:18 AM


Rashid ,

The COPYUTIL command exists on MPE boxes as well. But I would not recommend
it, expect for last resort purposes. In fact, there is no guarantee that you
will be able to use the result (should work most of the times, though), and
it is PAINFULLY SLOW !!!!

My recommendation of choice to backup the system domain would be cutting a
good old SLT, you know, the sysgen ta command .

If you want additional security for the system domain, you should consider
upgrading uour system volumes to HASS (High Availability Storage System)
disks, which allowhardware mirroring. You may even want to consider adding a
backup system and linking your two bowes with Shareplex, thus taking no
chance toward system/application integrity/availability .

E-mail me privately for details .

Christian Lheureux
Former HP Response Center Engineer
Independent Consultant