size of terrain output and cache

[dongju.jeong]

I am sorry to repeat the question.

I use 32 ecw files as images. 

The capacity burden is too large. Is the ecw file something wrong ??

[silent]

Hard to say without seeing the actual ECW sources. Have you tried to resave ecw to geotiff for example to see how size will change? Is it possible to check the ECW sources as well (we can sign NDA with your company before we get the actual files)?

Thanks!

[silent]

Have you also tried to generate terrain and check the final size? Algorithms that calculate required disk space are not 100% precise and there is always a chance that final required disk space will be smaller than calculated.