As filers have received more main memory, we began running out of reserved disk areas before the whole core was dumped. The actual ratio of memory to disk depends on memory size and disk model; the larger the ratio the more likely you'll be unable to dump the whole core. In response, we implemented the compressed core feature. Now if the filer computes there isn't enough disk space to save the entire core uncompressed, we compress the core before writing it out.
This makes me very interested in providing enough disks to allow uncompressed cores. However, looking at the documentation I don't think that's going to happen. According to the SAG, each disks provides only 20 MB of dump space, so for an F760 with 1024 MB of main memory, fifty-two disks will be necessary for an uncompressed dump. Is this correct? The chart still says only fourteen for "256 or more." I've got fourteen on each filer; if twenty, say, would do it, I'd rearrange filers so that the most sensitive ones had twenty, but fifty-two is out of the question.
ejt