Thank you for the answer. Couple of people point me to the "tar" block size and it is correct. I do following test: test1: ufsdump 0uf ... test2: tar cvf /dev/rst31 XXXX test3: tar cvfb /dev/rst31 64 XXXX <== 32K block size test1: 55 min test2: 3 hour 20 min test3: 55 min My original post: > We have SUN 280R (Solaris 8) with external SUN L9 tape library > (DLT8000). i found the tape driver run very slow. Our nightly ORACLE > backup (use "tar" utility, few files, but big size) total 20GB. It take > almost 4 hours to finish. Base on DLT8000 document, the speed should > 6Mb/12Mb per second. That mean even on 6Mb/sec, a hour DLT8000 can backup > 20GB. Can anyone tell me what wrong it is? > > > Thanks. >Received on Mon Sep 17 20:53:32 2001
This archive was generated by hypermail 2.1.8 : Wed Mar 23 2016 - 16:32:30 EDT