"Stefan G. Weichinger" <sgw AT amanda DOT org> writes:

> as I recently got myself an Ultrium 2 drive (at last ...) I wonder how
> to optimize performance ...
>
> Right now I only have the amanda holdingdisk on one physical SATA-drive
> which seems to work out OK as long as there is no other I/O on that disk ...

> I see speeds up to 22MB/s with amanda, but also consider the sound of
> the tape-drive accelerating and decelerating could or should be avoided
> ... afaik it doesn't shoeshine but it doesn't always stream at constant
> speed when other apps access the drives.

LTO drives usually should be able to adapt the write speed (data rate)
depending on the incoming data rate.

In order to feed LTO4 drives at full speed I have severeal holding
disks, each one is a raid0 of three SAS drives. I use ext3, but I guess
other file system types would work as well.

        Sven