Not fully testing 8TB

I tested a 8TB SSD. f3write finished, as quoted below, before writing the entire SSD.
...
Creating file 7018.h2w ... OK!
Creating file 7019.h2w ... OK!
Creating file 7020.h2w ... OK!
Free space: 372.62 GB
Average writing speed: 476.39 MB/s

f3read:
...
Validating file 7019.h2w ... 2097152/ 0/ 0/ 0
Validating file 7020.h2w ... 1142016/ 0/ 0/ 0

Data OK: 6.86 TB (14721051904 sectors)
Data LOST: 0.00 Byte (0 sectors)
Corrupted: 0.00 Byte (0 sectors)
Slightly changed: 0.00 Byte (0 sectors)
Overwritten: 0.00 Byte (0 sectors)
Average reading speed: 1.03 GB/s

So apart from the untested part everything seems to be OK. Perhaps some data structure is too small for the 8TB