>>>>> On Wed, 25 Oct 2006 11:02:25 +0200, georg.weiss said: > > Hi List > > I have to (longtime) archive data on tape. To be sure that the data > which was written on tape is ok i'd like to run a verify job after the > successfull backup/archive job. The verify job should compare the data > of the source with the data written on tape to ensure the data is save > on tape before i may delete the source. > > Is this somehow doable with bacula ? > > It seams to me that the currently implemented "verify" option in bacula > will not read/verify data from tape but only compare checksums in the > catalog database; which is a fine feature but will not ensure that the > data on tape is ok.
That's correct -- Bacula doesn't provide a way to compare the tape to the current disk contents. The only way to be sure is to do a restore and compare the files. > Will the tape drive itself ensure that the data is verified during the > backup job (by a read-after-write verify)? I know tapes that have > multiple heads, one for write, one for the verification of the written > data. But is this valid for all tape drives ? Right, some do, but it depends on the tape drive. Anyway, that just verifies that the tape contains what the drive received, so doesn't really guarantee anything about the source data. __Martin ------------------------------------------------------------------------- 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
