Is there any limitation for NPM to monitor large volumn size

Hi, Guys

I have a Linux server with a 40TB disk.

When I use NPM 10.4.2 to monitor this server with 64bit counters, it only shows 7.8TB for this disk.

But when I use STM to monitor this server, it shows 40TB correctly.

So, is there any limitations for NPM to support large disk?

Or how can I solve this problem?

Thanks.