The best replacement for celerra is clariion.

The best alternatives to celerra are rated as following:
★★★★★  clariion
★★★  vnx
★★★  netapp
★★  centera
★  isilon
  netapp filer

Your alternative for celerra is not listed? Suggest!
Speaking about celerra, one probably shouldn't forget about recoverpoint.

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



Google Trends

Scale is based on the average worldwide traffic of celerra in all years. Click on graph for more.
celerra
clariion
vnx