What is the expansion for .d2i

Hi,
Good morning.

Is there any specific expansion for .d2i?
Archive file format or type

Thanks & Regards
Logu

HI Logu,

If you are referring to the expansion done by utilities such as WinZip or 7-zip, then no. It’s not possible to expand the historian archive files in that way because they do not represent containers for other files. Instead, the files represent a sorted collection of measurements stored in a B-tree. The best reference for you to obtain a deeper understanding of the format would be the openHistorian source code itself.

Thanks,
Stephen