> i want to buy 4x 250 Gb Ide hardisks, and i want to use them as a backup > medium, and if i calculate the total gb to backup for all my pcs, it adds > up to be 820Gb, now what i was wondering is if one disk gets full during a > backup can bacula automatickly continue the rest of the backup on the 2nd > or third or forth disk.
LVM can aggregate a bunch of disks together in a way that would allow you to add or remove disks at a later date without too much mucking around. If one disk dies you may be able to recover some of it. RAID0 (striping) will allow you to do the same thing but in such a way that each 'unit' of data is spread across all disks, which is great for performance as you get the throughput of the sum of (all things being equal) the sum of the bandwidth of all disks. If one disk dies though, consider your data gone. You may be able to configure LVM to stripe data across disks like RAID0 does, but I'm not sure. RAID5 works like RAID0 but you sacrifice the equivalent space of one disk to be able to survive any one disk failing. In your case you'd need an extra disk to be able to have the 820Gb you require. Performance is not as good as RAID0 but still much better than LVM. I believe there are tools around to be able to add a disk into a RAID0 and RAID5 array to increase its size. If you have made the decision to only back up your data to disk, I would recommend using some form of redundancy (eg RAID5). James ------------------------------------------------------- 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&kid0709&bid&3057&dat1642 _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
