> Ludo Koren wrote: >> It doesn't help either... The result is the same. >> >> > Just to check I'm understanding your problem correctly -- > you're expecting to write much more data to the tape than is > actually being written.
That's right. I suppose that 54GB of data could fit on 2 40GB tapes... > If that's correct, then there's a couple things I can think of: > 1) Your tape drive isn't doing hardware compression. Check the > manual and see if there are any dip switches you need to set. > (Make a note of how they're set before you change anything, so > you can go back to what you had originally!). I'll check this > When you say the result is the same, if it used exactly the > same number of tapes (down to the decimal point) then that > definitely suggests that your tape drive is not compressing. > 2) The data you're writing to the tape is already mostly > compressed, so you won't fit as much as you might if it were > uncompressed data. I will do statistics about files. > Also, the 40Gb per tape that you quote is, I think, the MAXIMUM > amount of data the tape will take. It's only 20Gb native. > 40Gb is how much will fit at optimum compression, which you > never get. > It's unlikely to be a FreeBSD problem because I regularly fit > 6-7Gb on a DDS-2, which has a native size of 4Gb. I use dump > options like the ones in my last message. > --Alex Thank, for your suggestions. lk _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"