Hi Mukesh,
DMS actually works like this...
1) Document type with some configurations are done.
2) If required, content servers are installed & linked to DMS
3) Document info record(DIR) is created and originals(attachment) pertaining to the DIR is attached
4) Original is linked to content server before saving the DIR
5) If required, different versions are created.
Is this the one you are looking for?
As far as my knowledge, in DMS, the DIR's which are marked for deletion can be archived.
Regards,
Ravi