> From: "Adam Huffman" <[EMAIL PROTECTED]> > > What sort of backup speed should I expect when using Bacula with an > LTO3 library? > > I'm seeing nothing like the advertised 60-80MB/s.
The tape drive speed is not the bottleneck, then. The number of files saved (or, seen from another point, their average size) has a large influence. For instance I get : FD Files Written: 11,608 SD Files Written: 11,608 FD Bytes Written: 1,593,770,921 (1.593 GB) SD Bytes Written: 1,595,662,849 (1.595 GB) Rate: 34647.2 KB/s FD Files Written: 179,040 SD Files Written: 179,040 FD Bytes Written: 13,268,207,376 (13.26 GB) SD Bytes Written: 13,292,405,638 (13.29 GB) Rate: 22915.7 KB/s FD Files Written: 154,664 SD Files Written: 154,664 FD Bytes Written: 3,127,551,736 (3.127 GB) SD Bytes Written: 3,148,432,104 (3.148 GB) Rate: 9992.2 KB/s All are full backups on a LTO3 through a Gbit/s ethernet with no particular tuning. I don't know if this is mainly due to the filesystem on the client or the index database on the server. The second result above is the server itself. Same hardware as the first one, relatively similar average file size, but noticeably slower when both non-tape-related IOs combine (at least, that's my guess). ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
