> > Some time ago I have tried to configure something similar with the > > rait driver. I wanted to have backups going to an online disk, for > > onsite fast recovery, and to tape for off-site and longer > > term historic storage. > > This idea seems to come up on a regular basis, and I know I'd love > to have the functionality. Since amrestore can work from backups > on the holding disk, wouldn't it make sense to allow Amanda to be > configured so that data is only deleted from the holding area when > it needs the space for the current backup? Or is that just lazy, and > I should go learn about RAIT and the 'file' driver?
I think this can be accomplished by configuring amanda with no holding disk and using a disk file as one of the rait devices, though I have not yet tried it. I would be interested to know how data is written to the rait devices (with and without a holding disk). If there is no holding disk, are writes done one block at a time to each device round-robin? With a holding disk, are the dumps writted one file at a time to each device? Dick
