Alan, I don't believe that it's possible with the architecture that Bacula uses. This would require that multiple nodes would be running the Storage daemon (SD) but they would all be trying to control the same tape device. There is no mechanism to coordinate the SD's and they would all be trying to lock the device simultaneously.
Before I started using Bacula I had a similar SAN-based setup at another company. Each node had direct access to both the drives and the robots via the SAN. I eventually wrote my own scripts to manage backups across the servers with one node acting as the controller. It managed a db of tapes and the schedule. The controller would load the tape required by the next backup and then execute the backup script on the the appropriate node via ssh. The advantages are that the backups are all done at native device speeds, the disadvantages are a rigid schedule, inability to multiplex backups to optimize tape use and backup windows and the code was, as is typical of production software, 80% error checking and management. >Message: 7 >Date: Wed, 07 Feb 2007 11:35:17 +1100 >From: Alan O'Keefe <[EMAIL PROTECTED]> >Subject: [Bacula-users] Single tape drive visible to multiple hosts >To: bacula-users <bacula-users@lists.sourceforge.net> >Message-ID: <[EMAIL PROTECTED]> >Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >Hi all > >I have a situation where we have a single tape library, (IBM 3581 >Ultrium Tape Loader), which is connected via a fibre SAN to a mix of >Intel Blade's, (running RH Linux or Win 2K), and a couple of P570 >servers running AIX. I am trying to put together a multi-platform >backup strategy and am investigating Bacula as an option. > >My question is: > >I would like to set it up to do the backups to the drive directly on >each of the platforms that can see the tape drive, only doing >network backups where necessary to cut network load. We would be using >only one tape per night, (LTO-3, lot's of space), but would need to >co-ordinate the jobs so that the hosts pass the drive around seamlessly >without fighting over it. > >Is this feasible with Bacula ? > >If so, how would you do it ? >If not, any alternate suggestions ? > >Thanks in Advance > >Alan ---- Alan Davis Senior Architect Ruckus Network, Inc. 703.464.6578 (o) 410.365.7175 (m) [EMAIL PROTECTED] alancdavis AIM ------------------------------------------------------------------------- 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
