Jack,

>     This creates two questions.  If I export a dozen nodes to a tape,
>and then later someone needs data from node XYZ, can I stick the tape
>in and "IMPORT NODE XYZ DEVCLASS=8MM_CLASS" and it will ignore the
>other nodes?

In my experience this works exactly as you describe.  You can specify what 
node will be imported even though multiple nodes have been exported to one 
tape.

>EXPORT NODE A,B,C                    FILEDATA=ALL 8MM_CLASS SCRATCH=YES
>EXPORT NODE D     FILESPACE=D1,D2,D3 FILEDATA=ALL 8MM_CLASS SCRATCH=YES
>
>     Will this back it all up to the same tape and then allow me to
>put in the tape and import one specific node or filespace?

This scenario on the other hand is more of a stretch.  I don't know for sure 
if this will work as you expect.  The main reason for this, is that the two 
export commands might want to start from the beginning of the tape.  If you 
are interested in utilizing the tapes efficiently, you may want to approach 
this problem from a slightly different angle.
If you export your node data to a FILE device class, then tar all that data to 
your tapes(spanning tapes if necessary), you get the greatest efficiency and 
can later untar just what you desire before importing to TSM.  The only 
problem you may have is that your disk capacity is not enough to handle the 
exports from the TSM server.

Good luck.

-Matt
/**
/**
 **    Matt Bacchi                   mbacchi AT us.ibm DOT com
 **    IBM Global Services                SDC Northeast
 **    F6TG; MD Filesystems/Internet     (802) 769-4072
 **    ADSM & AFS/DFS Backup             (tie) 446-4072
 **/