Is it efficient to do incremental backups on one filesystem with different
management classes?

Example:
Monday - Friday: mgmtclass day (versioning: nolimit, retain: 7 days)
Saturday: mgmtclass week (versioning: nolimit, retain: 30 days)

Although file are bound to mgmclass week when stored on saturday, they are
rebound to mgmclass day on monday. So they will expire after one week
instead of beeing held for 30 days.

Does it mean that we have to do do an archive on saturday ?

TIA, R. Masa