Version 2.5 of OBACKUP now available, which supports HPFS long file names
and extended attributes. The file supplied is a fully working
demonstration, which expires at the end of August 1994. 

The new version is a full 32-bit OS/2 2.1 application. It now has improved
compression (16-bit instead of 12-bit). It remains a text mode application
(so that it may be run outside Presentation Manager), but it will run 
happily in an OS/2 Window.

OBACKUP and ORESTORE were written to provide a means of backing up data 
from hard disks to floppies which would run as a protected mode 
application under OS/2. In order to save media costs, the programs 
compress the data as it is backed up. The algorithm used is dynamic 
Lempel-Ziv compression, which normally gives compression ratios of between
20% and 60%. To increase the speed of backup, the compression algorithm 
can be changed to a simple non-repeat packing method, or turned off 
altogether, using a command-line switch.

OBACKUP makes full use of OS/2 threads, thus enabling it to read data from
the hard disk, compress previously read data, and write previously 
compressed data to floppy at the same time. The read and compression 
threads still run while the user is changing floppies.

ORESTORE is the command-line driven restore facility. There are  parameters
to allow translation of path names, so that directory  structures can be
restored to different disks and directories. ORESTORE  also allows backups
to be verified against the hard disk data, giving you  peace of mind that
the backup can be restored successfully at a later date.

OBACKDIR produces a listing of all the files in a backup set.

Trumphurst Ltd.
The Willows
St. Martins Moor
Oswestry
Shropshire
SY10 7BH
England

Tel: +44 (0)691-670318
Fax: +44 (0)691-670316
Email: obackup@trmphrst.demon.co.uk

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