Data Store

Occasional Contributor

Data Store

Hi Experts,
May I please know how calculated data is stored in Anaplan? For Example, we have 3 line items A, B, C. A and B have values 10 and 20 in a module. We write a formula for C = A+ B in the module. So in the backend, does Anaplan store the values of A and B only without storing the calculated value of C in the disk, and then calculate C dynamically only when a model is open, OR does it calculate C on the disk and store A, B, C on the disk itself.


Thanks in Advance


Master Anaplanner/Community Boss

Re: Data Store



Anaplan is an in-memory platform. When a model is first opened, it is loaded in memory, which means C is calculated. When you modify A, C recalculates, and also all other dependencies (but only those: if D = B, D isn't recalculated when A changes). This is the principle of Hyperblock, our patented technology.

As this is happening in-memory, C isn't written to disk during this process. Obviously there is some write to disk events for data archiving and recovery, but I don't know if C is written to the disk then. @DavidS can shed some light


Nathan Rudman, Anaplan Model Builder

Re: Data Store

@nathan_rudman ,


You are exactly correct, C does not get written to disk since it is a formula.


Hope this helps,



Master Anaplanner/Community Boss

Re: Data Store

Yes, in memory - a distinct space is allocated for A,B and C, but on disk only A, B.

The module size and ultimately model size is the size of the memory, not the disk.