Possibility for different checksumsintervals for different files

A possible enhancement after implementation of assignment B2 (on Archive improvements) would be to open for possibility to have different checksums check intervals on different files. This enhancement can be of interest if as part of implementing different Quality of Service levels for different files.
Before writing specification for this the needs must be analysed further. It may for example be that files with different Quality of Service Levels are are placed on different segments or in more replicas.