The Exabyte 312629 probably has the advantage over most tapes for use with Mammoth drives in that it is made by Exabyte the makers of Mammoth tape drives…However, this is mostly just an assumption and the reverse could also be true…
Alas, there is no means to find out as I don’t have a spare Mammoth tape drive or 8mm tapes…

In any case, the Exabyte 312629 has a capacity of 20 GB native and 40 GB compressed. It is only compatible with the Mammoth tape drive and auto-loaders series because its tape material is AME (Advanced Metal Evaporated) and drives older than the Mammoth series were only compatible with Metal Particle (MP) tapes. The Exabyte 312629 is well and truly a 170m 8mm tape. The Mammoth tape drive can support up to 3 MB/s of native data transfer and 6 MB/s of compressed data transfer.

Next, I mingle with the 2 two 5 tapes…