|
> -----Original Message----- > From: midrange-l-bounces@xxxxxxxxxxxx > [mailto:midrange-l-bounces@xxxxxxxxxxxx]On Behalf Of Hall, Philip > Sent: Tuesday, February 01, 2005 2:47 PM > To: Midrange Systems Technical Discussion > Subject: RE: Using DVD-RAM drive > > > Charles, > > > Interesting that the compression ratio when writing to > > the save file is so much worse than the compression ratio > > when writing to the DVD-RAM> Anybody know why this is not the case? > > In all seriousness this time; > > SAVF's don't 'know' what media the may (or may not) end up on > - and as I understand it, the data compression ratio is also > tied in to the drive/media being used at that very point the > save is occurring. > > All that's really happened (when doing a SAVLIB (DEV(*SAVF)) > is probably LZH compression on the contents of the SAVF - > i.e. something that is not device/media specific - but to see > a big compression ratio you'd need to specify where (the > device/media specifics) the savf will end up, I guess. Except the DVD-RAM drive doesn't have any compression built in. So in either case, it's OS/400 doing the compression when the DTACPR(*YES) is specified. > > I can't get to a screen at the moment, but does the > SAVSAVFDTA have a DTACPR() option - or similar? Or is there > another way to save the savf that will allow device specific > compression? > > --phil > SAVSAVFDTA has a COMPACT(*DEV | *NO) param. But as mentioned above, this has no effect since the DVD-RAM drive doesn't offer any hardware compression/compaction. Charles
As an Amazon Associate we earn from qualifying purchases.
This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].
Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.