what leads to a "new disk" ?

"Stefan G. Weichinger" <[email protected]> Thu, 1 Dec 2022 10:18:03 +0100

Newsgroups	gmane.comp.archivers.amanda.user
Message-ID	<[email protected]>

I have an installation where I didn't add or remove DLEs for a long time.

But now an then amanda seems to "forget" a DLE and come up with 
something like:

samba.intra rootfs lev 0  FAILED [dumps too big, 42606931 KB, but cannot 
incremental dump new disk]

The DLE is NOT new. Where does that come from?