Hi, On 9/27/2006 3:52 PM, Hristo Benev wrote: ... > I'm aware of all this, but in my case I think SW compression is better, > because I have 10MB network between servers (and that is enough for my > setup - except backup there is no high bandwidth demand application). > > Also I've tested the HW compression (on similar drive in 1999) and the > backup was much slower??? and compression really bad!!!
That's something I can't comment on, but I'm quite sure that with all tape drives I know compressed backups are faster as long as the uncompressed data throughput of the SCSI bus is fast enough to avoid shoeshining the tape drive. > Thats why I typed the command that should disable compression, but how I > can check??? > mt -f /dev/tape compression off > >>>tapeinfo gives me an error >>> >>>tapeinfo -f /dev/tape >>> >>> >>Try tapeinfo -f /dev/sgX >>tapeinfo needs to be pointed to the generig SCSI device representing >>your tape drive. >> >>Arno >> >> >> > I have st0 as device, but it gives me the same result Use sg? not st?. st is Sscsi Tape. nst is Non-Rewinding SCSI Tape, ans sg is SCSI Generic. Arno >> >> >>>mtx: Request Sense: Long Report=yes >>>mtx: Request Sense: Valid Residual=no >>>mtx: Request Sense: Error Code=0 (Unknown?!) >>>mtx: Request Sense: Sense Key=Hardware Error >>>mtx: Request Sense: FileMark=no >>>mtx: Request Sense: EOM=no >>>mtx: Request Sense: ILI=no >>>mtx: Request Sense: Additional Sense Code = C1 >>>mtx: Request Sense: Additional Sense Qualifier = 85 >>>mtx: Request Sense: BPV=yes >>>mtx: Request Sense: Error in CDB=no >>>mtx: Request Sense: SKSV=no >>>mtx: Request Sense: Field Pointer = 00 00 >>>INQUIRY Command Failed >>> >>>and mt status gives: >>>mt status >>>SCSI 2 tape drive: >>>File number=0, block number=0, partition=0. >>>Tape block size 512 bytes. Density code 0x25 (DDS-3). >>>Soft error count since last status=0 >>>General status bits on (41010000): >>> BOT ONLINE IM_REP_EN >>> >>> >>> >>>Thank you, >>> >>> >>> >> >> > By the way I use RedHat based OS (CentOS 4.4) > > Thanks, > > -- > Hristo Benev > IT Manager > > WAVEROAD > Partners in Telecommunications > > 514-935-2020 x225 T > 514-935-1001 F > www.waveroad.ca <http://www.waveroad.ca> > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > > > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys -- and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > > > ------------------------------------------------------------------------ > > _______________________________________________ > Bacula-users mailing list > Bacula-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bacula-users -- IT-Service Lehmann [EMAIL PROTECTED] Arno Lehmann http://www.its-lehmann.de ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
