The best replacement for archiving is backup.

The best alternatives to archiving are rated as following:
★★★★★  backup
★★★★  core data
★★★  journaling
★★  journaling exchange 2010
★★  archival
★  enterprise vault
  partitioning
  backing up
  records management

Your alternative for archiving is not listed? Suggest!
Speaking about archiving, one probably shouldn't forget about outlook 2010.

Other search terms related to archiving and their ratings are:
★★★★★ outlook 2010
★★★★ outlook 2007
You have in mind a companion for archiving and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of archiving in all years. Click on graph for more.
archiving
backup
core data