morenga

RSJ's CD-Writer SW can handle already many DVD drives.
I found a combination of RSJ and cdrecord is "unbeatable".
Meaning, if one can't handle a specific task, the other can for sure.
With this combo I can burn *everything*, including (Super-)Video CDs
amd DVDs.

Greetings
Morenga

peter brown

Hi Don

I hate to disagree with you regarding UDF:-

- but, in all fairnes to UDF, I have to :-)

Your UDF statement may be accurate for some people - I certainly had
problems with udf212, os2cdrom.dmd build 10.122 and a cdrw - but it is
far from the full truth.

UDF formatted DVD-RAM discs used in an LG GSA-4040B DVD writer are
fairly quick following the recent IBM IDE update containing os2cdrom.dmd
build 10.127. Here are some examples:-

Before ide 10.127 update using PC-BaX Demo (V3.20) writing to UDF
formatted DVD-RAM:-

Backup Statistics
-----------------
Bytes Done: 758,801,839
Files Done: 12,947
Files Skipped: 3
Errors: 0
Time Taken: 00:43:04
Total Time: 00:43:10

Verdict: Slow but acceptable.


After ide 10.127 update using PC-BaX Demo (V3.20) writing to UDF
formatted DVD-RAM:-

Backup Statistics
-----------------
Bytes Done: 759,697,046
Files Done: 12,963
Files Skipped: 0
Errors: 0
Time Taken: 00:10:19
Total Time: 00:10:27


The same, but slightly larger, backup that now takes 33 minutes less.

Verdict: Very acceptable.

For some of us UDF formatted DVD-RAM is the way to go :-)

Some posts in the os2.bugs newsgroup suggest that this ide update makes
udf (more) useable with cdrw as well.

You may want to investigate UDF as an option in your SmartBackup app -
especially if you could utilise the necessary APIs to make larger than
2Gb files possible as no other backup software seems to be able to.

I would do a comparison with RSJ and DVD+RW media using the above backup
but PC-BaX does not seem to work with RSJ attached media.

I have downloaded a copy of BackAgain/2000 for evaluation so have used
that for this comparison. This is the same backup as above but I have
deleted some files in the meantime so it is a little smaller in size.
Lifted from the BackAgain logfile:-

;-----------------------------------------------------------------------
;
28-DEC-03 21:39:04 [id=8000] Backup for set 'BackUpG' started.
28-DEC-03 21:47:20 [id=8003] Total active time for operation : 7:55.
28-DEC-03 21:47:20 [id=8004] Total idle time for operation : 0:20.
28-DEC-03 21:47:20 [id=8005] Total elapsed time for operation : 8:15.
28-DEC-03 21:47:20 [id=8007] Processed 719.7 MB in 13837 files.
28-DEC-03 21:47:20 [id=8006] Average throughput : 90.9 MB/min.
28-DEC-03 21:47:20 [id=8401] Backup completed normally.

Seems faster until you realise that you still need to Finalise the disc
which takes a further 5 minutes which, in fact makes RSJ and DVD+RW
slower for backup purposes than UDF formatted DVD-RAM.

So, while I am aware that UDF may not be a practical option for some
people it certainly has become the option here.

Hope the above is of some interest/use.

Regards

Pete

don eitner

That is an encouraging speed increase, especially for an RW (or RAM)
disk. I can surely add UDF support in SmartBackup, but unless Rexx
itself is able to cross the 2GB per file line, there's nothing I can do
for that. I don't do C/C++, Pascal, etc. I just do Rexx (and am
learning Perl now that I've found PRIMA which is a graphical user
interface toolkit for Perl on OS/2, Windows and Linux).

Thank you for the update,

Don


--
Don "Freiheit" Eitner
Hobby eComStation & OS/2 developer
http://freiheit.syntheticdimension.net

morenga

Pete, do you mean to say that with the new UDF FS one could burn DVD's w/o
3rd party SW? Please clarify.

Greetings & happy new year
Morenga

peter brown

Hi

Errr... what clarification are you after exactly?

My post was about writing a backup to a UDF formatted DVD-RAM disc -
insert blank dvd-ram disc in dvd-ram capable writer, RMB dvd writer
object and select format, then perform backup as per previous post.

So, Yes is the answer to your question if you are asking about data
files and using a dvd-ram disc as a very large, fast(ish) removable
floppy-like (no partitions) disc.

Please do not confuse it with creating or copying dvd video disc which
may be possible with the dvd version of cdrecord - I have not
experimented with that at all yet as the os/2 version seems to be a
little behind other os's :-(

Does that help?

Pete