Database archive solutions

Hi,

Our application requirement demands archiving of records, so that
performance/speed of the application is not compromised.  So, am looking
out/evaluating on various techniques/solutions available for database
archiving, in general, for PostgreSQL.

Few solutions that comes to my mind are:

    1) Table partitioning
    2) Separate tablespace and/or schema
    3) Moving archived records/tables to a different harddisk

Any other suggestions/pointers/solutions are really welcome and appreciated.

NOTE: We're running PostgreSQL v9.1.3 on CentOS5.2

Regards,
Gnanam