>> The disk space required is just a little more than the space of one full >> backup, plus incrementals." > > Doesn't sound like what I understand to be a snapshot. Usually only > pointers are stored at the time of the snapshot, then writes to the > filesystem are actively monitored and only the changes stored.
That "little more than the space of one backup" is the space needed for pointers (hardlinks). I'm backing up about 15GB of data (mainly office documents, mail, photos, without the music). Daily incrementals are around 40MB. If I edit a 100MB image file, the daily backup will of course increase by these 100MB. > be running out of space on the other used for backup. Yes, you have to > be very careful to not mirror a corrupted library, or one where files > have been deleted. That's exactly the point: with snapshots/incrementals you need more space, but you often can go back days, weeks or even months to restore a file. I have 7 dailies, 4 weeklies and 8 monthlies of those 15GB of files. That backup is using a total of 23GB - 50% addition for a max of 19 versions per file. -- Michael ----------------------------------------------------------------- http://www.herger.net/SlimCD - your SlimServer on a CD http://www.herger.net/slim - AlbumReview, Biography, MusicInfoSCR _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/discuss
