TAP, Storage Server, CALEA Site, How long do we have to hold the data?
Data should be held just long enough for the LEA to receive it. The WISP should hold the hash for that particular interception as long as the legal proceedings and appeals last. This could be 5 to 10 years. The WISP should work with the LEA on how long they need to hold the hash. Prior do destroying the Hash it would be best to verify with the LEA. Since a hash is performed for each intercept period. There will be many small files. The total long term storage required would be minimal.