RE: Using DVD-RAM drive

Vern,

I've looked at the help.

Doesn't explain why DTACPR(*YES) gives two different ratios depending on rather 
you are going to a save file or the DVD-RAM drive.  As you and I have both 
mentioned the DVD-RAM drive doesn't have any built-in hardware 
compression/compaction.

Thus, in both cases, it is only OS/400 doing the compression.

Why then does the 3.27GB library end up at 795 MB when SAVLIB goes directly to 
the DVD-RAM and 2.14GB when SAVLIB goes to the save file??

Charles Wilt
iSeries Systems Administrator / Developer
Mitsubishi Electric Automotive America
ph: 513-573-4343
fax: 513-398-1121
 

> -----Original Message-----
> From: midrange-l-bounces+cwilt=meaa.mea.com@xxxxxxxxxxxx
> [mailto:midrange-l-bounces+cwilt=meaa.mea.com@xxxxxxxxxxxx]On 
> Behalf Of
> Vernon Hamberg
> Sent: Wednesday, February 02, 2005 9:07 AM
> To: Midrange Systems Technical Discussion
> Subject: RE: Using DVD-RAM drive
> 
> 
> Compression (DTACPR)  is usually a software function, 
> although it can be in 
> hardware if supported - help says that optical devices do not 
> have this 
> support. Compaction (COMPACT) is on the hardware. There can be a 
> combination of both on hardware if supported. Al B. would 
> probably know 
> whether this is a good idea.
> 
> See the help for each parameter for more details - there's 
> more than what 
> I've said here.
> 
> HTH
> Vern
>