Using Tandberg LTO5 and Debian 10 Buster

I use

PRETTY_NAME="Debian GNU/Linux 10 (buster)"
NAME="Debian GNU/Linux"
VERSION_ID="10"
VERSION="10 (buster)"
VERSION_CODENAME=buster
ID=debian

With an own Kernel

Linux 5.4.61 #1 SMP Tue Sep 1 21:08:21 CEST 2020 x86_64 GNU/Linux

Added SCSI support and everything.

root@server:~# lsscsi
[0:0:0:0]    tape    TANDBERG LTO-5 HH         Z629  /dev/st0 
[1:0:0:0]    disk    ATA      ST4000VN008-2DR1 SC60  /dev/sda 
[2:0:0:0]    disk    ATA      ST4000VN008-2DR1 SC60  /dev/sdb 
[3:0:0:0]    disk    ATA      ST4000VN008-2DR1 SC60  /dev/sdc 
[7:0:0:0]    disk    JetFlash Transcend 16GB   1.00  /dev/sdd

So, i see the tapedrive but have a lot of trouble with LTFS. I used this website for getting LTFS:

https://www.tandbergdata.com/de/index.cfm/solutions/ltfs-for-archive/ltfs-downloads-lto56/ 

And tried the own building stuff, the RHEL binaries. But the own building says it want new builded with libtool 2.2.6b but I have 2.4.6 and there is no possebility for autoreconf --force --install Well, the RHEL stuff want icu 50.2, but for Debian there is only 52.x or I must build it on my own, but I don't think it's the correct solution to downgrade software to really old stuff. I tried to get HPE StoreOpen for RHEL, but it's only for enterprise customers ands costs money, so it's no option... The LTFS from GitHub supports only IBM drives, so no option... it's so frustrating :( Now I just want to know: Are there any basic debian/linux tools for managing LTO drives: formatting, writing, reading, mounting, etc.? Or can anyone help me to get it working on Debian 10? Thank you in advance.