The number of templates per server is limited only by available memory. Every ICS fingerprint template consumes about 

  • 2 to 4KB of RAM (i.e. one fingerprint with the maximum number of minutiae points).
  • 1KB per face or iris template

The templates can also be divided into multiple virtual partitions so a large database can be handled by multiple nodes, which makes the maximal database size limited only by number of total memory in the cluster.

More info about templates in ABIS 8 documentation: