Verifying the Linux drivers
NetBackup requires specific Linux drivers.
See About the required Linux SCSI drivers.
You can use the /sbin/lsmod command to verify that the st and the sg drivers are loaded in the kernel.
Ransomware attackers specifically target and attempt to destroy backup systems to increase the probability of payment. Hardening your system is critical. Please ensure you have reviewed your platform security using the Security Hardening Checklist