> I have a speed question about my DLT tape drive. First some tech: > > The controller: > description: SCSI storage controller > product: AIC-7892A U160/m > vendor: Adaptec > physical id: 9 > bus info: [EMAIL PROTECTED]:09.0 > logical name: scsi0 > version: 02 > width: 64 bits > clock: 66MHz > capabilities: scsi bus_master cap_list scsi-host > configuration: driver=aic7xxx latency=64 maxlatency=25 > mingnt=40 > resources: iomemory:ff6fe000-ff6fefff irq:177 > > The Tape Drive: > Vendor: COMPAQ Model: DLT4000 Rev: D887 > Type: Sequential-Access ANSI SCSI > revision: 02 > target0:0:6: Beginning Domain Validation > target0:0:6: FAST-10 SCSI 10.0 MB/s ST (100 ns, offset 15) > target0:0:6: Domain Validation skipping write tests > target0:0:6: Ending Domain Validation > > > But the general speed with which Bacula saves to disk is: > Bytes/sec=2,091,958. I could be daft here, but that's about 1.9950MB per > second. While the drive is supposed to be able to write with 10MB's per > second.(?) > 10MB/s is the interface speed not the speed the drive writes to tape. With my DLT 8000, gigabit network, and fast dual processor servers I get between 3 to 4MB/s with on local backups. Remember the DLT8000 writes twice the bits in the same tape area as the DLT4000 so to make a long story short the numbers you get look normal.
John John John ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
