I've been doing some comparisons on an 8450. Initially created some deduped volumes - total CPG space consumed around 11TB, of which the .shared volume was 4.1TB. I then tuned them to a new CPG as DECO volumes - the total capacity used reduced to 7.7TB, but the .shared area was still 4.1TB. This is a new shared area in a new CPG, so it's not that it didn't shrink.
This seems to imply that even with compressed volumes, the common blocks in the .shared area are not compressed. Does anyone know for sure if that is the case?
Thanks
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