Data conversion needed?

[normntwrk]

We want to be able to copy to DDS4 tape some binary image files (150 + megs each)from an AIX 4.3.3 server and then restore those on a Microsoft server in another location from that DDS4 tape. Would anyone know if that is possible without any kind of conversion or if the tape will even be able to be read. We have about 180 gigs worth of this stuff to move .

Thanks
Norm

 

[BobMCT]

You might want to the "tar" utility to write the file(s) to the tape. There should be a free/public utility version of tar available for the mac. However, the mac MUST have a tape drive that is compatible with the physical tape used on the aix system.

Good luck.

B

 

[Ogzilal]

hi,

You can use ftp this way :

first : tar the files in afile with .tar as extension

tar cvf file_name.tar /path/to/your/files

second : gnu zip the tar file

/usr/local/bin/gzip -1 file_name.tar

this will product file_name.tar.gz

third :
In dos windows, connect from your PC to RS6000 via ftp

ftp 123.123.123.123 ( ip address of rs6000 )
login : your login
password : your pass
ftp>
ftp> binary
ftp> get file_name.tar.gz
ftp> quit

and last
unzip with winzip file_name.tar.gz and extract the contents into your PC

regards

 

[normntwrk]

Well I tried tarring the file to tape from The Risc box and reading it on The NT box (using the Backup / Restore program) but the NT box doesn't recognize the tape format and wants to format the tape (the Risc box reads it just fine during a test restore).

The files are already compressed so it won't do me any good to compress them ( I tried that , got about 1% compression)before FTP'ing them. I tried FTP'ing a 190 Meg file last night during the middle of the night but it dropped out after a couple of hrs (about 85 megs got through)

??

 

[Ogzilal]

Hi,
It's a gnu zip format (.gz) whitch is portable from unix to windows and a .tar inside a .gz is recognized as an archive by winzip.
So even if you can't get more compresion, if you want your tar to be expanded with winzip, you hace to compress it.
The final result file must be : file_name.tar.gz
Note that the .gz compression is needed not .Z one

regards

 

[normntwrk]

At the moment I think it has more to do with the tape format. I have tried compression on/off block size to 0 but the NT tape drive (DDS4) just states that is in an unrecoginzed format and won't let me catalog it

Norm