[daip] Need help moving data to new system.

[Eric Greisen]

Wing, Nickolaus writes:
 > We're in the process of upgrading to a new PC/LINUX system from SUN/SOLARIS
 > systems.  We've got AIPS running just fine on the new system, but we need to
 > import data onto the new machine's drive.  We've only run a few basic tasks
 > on it thus far like vplot and indexr, but we can't really start from scratch
 > because the new system doesn't have access to an exabyte tape drive.
 > 
 > How would we go about getting this data to the new machine?
 > 
 > We tried to do a FITTP to file so that we could ftp it, but it is over 3.5
 > gigs, and we're hitting a 2gig single-file-size limit. We tried to split it
 > in two by dividing it into two time period sets using UVCOP, but when we
 > FITTP the partial data sets it ends up trying to write the whole thing, and
 > hits the 2gig ceiling.
 > 
 > Please let me know how we should go about this.
 > 
 > Thanks,
 > 

It depends some on how old a version of aips you have.  I would use
FITAB to write the files and I would divide them into several pieces.
 UV data that are compressed may be written in that form to the FITAB
file pieces and that helps keep the file size down.  AIPS can go > 2
Gbytes internally on the latest LInux and on Solaris versions >= 2.6.
But it has to be compiled to do so.  The FITS disk files do not - yet
- have this capability since they now use Fortran IO rather than C.
I am going to fix that!

FITS is the only way that you can move data between these unlike
architectures.

ERic Greisen