[hank]

I wasn't clear in my question, I think.

I've successfully used SD 2.5 (Intel mini, 10.4) to back up _to_ the LaCie ethernet disk.

SD sees it fine and made a good sparseimage backup into a folder on that drive.
That's how it should work, isn't it? I haven't tried to restore from it yet, but the size looks right.

Now I'm using SD 1.55 (G3, 10.3) and it can't see the same folder, mounted on the Pismo's desktop. I thought it might be a feature not in 1.55 or a setting I'm missing.

Both with the Mini and the Pismo, I just mount the ethernet drive folder with /Go/ from the Finder menu.