For anyone interested in installing backupexec on truenas scale.
First of all to inform you that point out that backup exec is not compatible with truenas. However due to the fact that I had a huge amount of data from the previous installation I had which was on a windows server I had to find a way to backup / restore to truenas.
To be more specific: I replaced all my storage (about 0,7 PB) from 2 independent windows cluster to 2 independent truenas. Before I decided to do it I had to make sure first that I could restore from the backup exec files that I had backed up when my windows storage was in truenas. I also needed to make sure that I would be able to quickly and reliably backup my new truenas.
To make a long story short even though there is no compatibility highlighted I finally managed to have backupexec linux agent (Ralus) on truenas and it works fast and reliably.
The installation has 2-3 tips and a note to which you should pay attention. The tips are trivial and if anyone is interested I will answer in detail. The remark has to do with the peculiarity of truenas when it restarts to remove what it doesn’t like. So here too when it restarts it completely removes the agent installation. But in 2 minutes you install it again and everything works perfectly again.
Also note that if you have a fiber optic or SAS tape drive it can be connected directly to truenas and work perfectly as NDMP so you can manage your backup from the backupexec console but backup/restore is done directly in truenas on the tapes avoiding the use of the network completely.