You mean I have to used external disk drive? The analysis is doing on C: drive, but even I add the space of D: drive the solution will stop because I have 14 steps and the analysis stopped at step number 4. the total drive space is 700 GB, and I have more than 400 GB in C: drive.

I am doing a static structural analysis.

I have more than 66000 nodes in the model. I tried to reduce the number of nodes but the accuracy of the results reduced when I compared to experimental.