Michael Galloway schrieb: > Wrote blk_block=3465000, dev_blk_num=9000 VolBytes=223,534,015,488 > rate=38171.8 KB/s > Wrote blk_block=3470000, dev_blk_num=14000 VolBytes=223,856,575,488 > rate=38194.3 KB/s > Wrote blk_block=3475000, dev_blk_num=3500 VolBytes=224,179,135,488 > rate=38184.1 KB/s > > 38MB/s is only around 140GB/hr. i'd expect a bit more from LTO-4.
I get ~77 MB/s with a HP Ultrium LTP-4 drive during full backups and spooling (write speed to tape). > > > target5:0:15: Beginning Domain Validation > > > target5:0:15: Domain Validation skipping write tests > > > target5:0:15: Ending Domain Validation > > > target5:0:15: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 126) > > > target5:0:15: Beginning Domain Validation > > > target5:0:15: Domain Validation skipping write tests > > > target5:0:15: Ending Domain Validation > > > target5:0:15: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 126) > > > target5:0:15: Beginning Domain Validation > > > target5:0:15: Domain Validation skipping write tests > > > target5:0:15: Ending Domain Validation > > > target5:0:15: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 126) > > > target5:0:15: Beginning Domain Validation > > > target5:0:15: Domain Validation skipping write tests > > > target5:0:15: Ending Domain Validation > > > target5:0:15: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 126) I don't see the errors you get. But I also see "FAST-80 WIDE SCSI 160.0 MB/s" mesages in my kernel log. The HP tool ltt reports U160 connections for both of my drives. Altough the scsi controller's bios claims during boot that the drives are connected with U320 and the drives are capable of U320. After boot I checked the scsi paramters and it looks like 6.25 would be the correct value for U320. But the HP tool still shows that the drives are connected with U160. /sys/class/spi_transport/target5\:0\:1/min_period 6.25 Sorry for hijacking one half of your thread, but I would like to know if anyone has seen a FAST-160 message in the kernel log with tape drives. Not that I could saturate a U160 connection, but I would like to know why it's only connecting with U160 speed. An other LSI controller which is used for a RAID devices shows the propper U320 (FAST-160) value during boot. Ralf ------------------------------------------------------------------------- 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
