why | ufsrestore?

[Grant Beattie]

I have always wondered .. why does amanda pipe ufsdump output to ufsrestore
before sending it to the tape device?

If I ufsdump direct to tape, eg.

ufsdump 0f /dev/rmt/0n /

I consistently achieve 3mb/second (Exabyte mammoth).

If amanda is dumping direct to tape (file systems that are bigger than the
holding disk), I'm lucky if i get 1mb/second.

If it's going from the holding disk to tape, I get 3mb/second, as expected.

g.