Re: Exb8505C and TBTAPE Params

In <3gm6q5$cfl@explorer.csc.com> wlyle@PROBLEM_WITH_INEWS_DOMAIN_FILE (Wayne Lyle) writes: > Can anyone tell me the correct settings for tbtape using an >EXAbyte 8505C 8mm tape drive. The currect settings are: > TAPEDEV /dev/rst24 > TAPEBLK 126 > TAPESIZE 5000000 > From what I read, this is the compression mode of the tape unit >and I can write 5GB at 126K blocks. The drive is rated to go up to 10GB >with compression but I don't want to risk it. Should I assume that I will >get some extra without hitting the end of the tape? If I do hit the end of >the tape, what happens to the archive? On ours, without compression, I found I could get about 4400000 using 128 (not 126) K blocks before it hits end of tape. Not sure if why it wasn't closer to 5e6, but... I decided not to risk it and set it at 4000000. This was done with just 'dd if=/dev/zero of=/dev/rmt/XX bs=128k' and noting the count of #blocks. Note for compression this wouldn't be a valid test since all 0's compress quite well. -- Andrew Burt aburt@du.edu "But if he was dying he wouldn't bother to carve "Aaaaargh", he'd just say it."