Warranty & Maintenance

Hi, I have some NVR, M6016, does it have warranty? When does the warranty start?

One of my HDD failed on my NVR, how do I replace my HDD on RAID-5 config storage ?

What kinds of the VMS maintenance jobs need to be done ? And How often ?

I want to remove the operational permissions of a certain account. How do I do this?

My NVR MegaRAID is emitting a warning sound with a red LED illuminated, and I'm receiving alerts on the monitor. Additionally, I've noticed that the NVR recording has stopped. What steps should I take to address these issues? Is it possible that the RAID has crashed? Any guidance or advice would b