As from 2 November 2015 following the introduction of the Visa Information System (VIS), all Schengen visa applicants in India have to appear in person in order to provide biometric data (fingerprints and digital photography). The photograph –digitally taken at the time of the application or scanned from an existing one For subsequent applications within 59 months, the fingerprints can be copied from the previous application file in the VIS. In case of reasonable doubt regarding the identity of the applicant, the consulate will collect again fingerprints within the 59-month period specified above. Furthermore, the applicant may request that they be collected if, at the time when the application is lodged, it cannot be immediately confirmed that the fingerprints were collected within this 59 month period. Visa applicants' biometric data can be collected by Schengen States' consulates and external service providers but not commercial intermediaries
Processing Time will be a minimum of 15 days (excluding day of submission at VFS) for all the Visa categories.
However, in some cases the procedure may take considerably longer. Applications accepted at the Austria Application Center in Delhi will be submitted on next working day at the Embassy of Austria and applications submitted at the other 15 Austrian Application Centres
will be submitted after two working days at the Embassy of Austria in New Delhi.
For more details kindly see here