drharvey@chinet.chi.il.us (Douglas Harvey) (12/14/90)
I have a question on the amount of data that can be written to a standard 1/2" 9-track tape from a Sun workstation. We are using Sun 4/280's and some SPARCstations running v4.01. Tapes we receive from clients typically hold between 150-160MB on them. Most of these tapes are created on IBM mainframe systems. For example, assuming the block size was 32718, we would do: dd if=/dev/nrmt8 of=header bs=80 (grabs tape header) dd if=/dev/nrmt8 of=data.fil bs=32718 (data file) Now if we try to use the same block size (32718), we can only manage to put 140MB back on the tape. This is puzzling since we didn't have any trouble reading the data off the tape. Does anyone know why this might be? Any help would be appreciated. Thanks in advance, Douglas Harvey Email: drharvey@chinet.UUCP Hewitt Associates Compuserve: 72341,104 100 Half Day Road Phone: (708) 295-5000 Lincolnshire, IL 60069