mounting NVX disks in linux

The instructions for x86 systems are a bit different and simpler than the instructions for the vintage Infrant systems. The standard 4k block size is used for your volume.

This wouldn't void your warranty at all. You would just possibly lose any support from NetGear for recovering data from your array (which it looks like you're not going to get anyway). A factory default (wipes all data, settings, everything) with the disks in place would restore full software support.

With a Linux machine the steps would be something like

# apt-get update
# apt-get install mdadm lvm2
# mdadm --assemble --scan

You should see at least three md devices are started (/dev/md0, /dev/md1, /dev/md2). There may be more if vertical expansion has taken place or if you were using Flex-RAID with multiple volumes.

# vgscan
# vgchange -ay

You should then be able to "mount /dev/c/c/ /mnt" if everything is working correctly and have a look at your system.

Note you would need to run most/all of these commands as the root user which could mean doing something like

# sudo apt-get ...

etc.
or

sudo su -

then entering commands without needing to type sudo at the start of each command.