Lightning0011 wrote:
Otherwise, I would need two external USB drives to mirror each array which would be ok but, a singe drive would be better. So, is an emergency portable drive possible?
Hi,
I have my business data on a NL server with NL doing Mirrors on the internal drives at noon and at 8PM but I also have a small USB drive (on another computer on the local LAN) and I'm doing copies of the server data on this external drive twice a day too. In case of a problem (no hurricanes here in France but fire is always a possibility), I can unplug the USB drive and go away with it. The worst case scenario would be loosing 1/2 day of work which is acceptable for me.
In your case, you do not need to connect the drive to the NL server. You can do it if you program NL to mirror on it (but you'd need 2 drives). If you plan to use a backup (or copy) software it would be faster if the USB drive was on the computer running the backup/copy program.
The most important point is that you need to backup often (depends on the data change frequency) and regularly and not just in case of an approaching problem. It takes some time to copy big amounts of data and it always fails when you are in a hurry (Murphy's laws

) ...
Regards