terminology and state-of-the-art backup

[peteraloha]

Love this News item: "News:
Remember, a backup is a fully redundant copy of data that does not share a single point of failure with the master copy! A mirrored set is not a backup unless you have a copy that would survive its loss!"

With my LS-WXLED3, is the best I can achieve a "mirrored set"? Why would I have a mirrored set for a backup?

As you can hear, I am a complete beginner with a NAS, and any links to a manual or simple explanation is greatly appreciated.

Thanks,

Peter

[joma90]

Mirror offers you redundancy, If one drive fails all your data is still in the other and your unit is still accessible. If you want you can do 2 separate disk but you would be manually coping everything over from one disk to another. If you do a RAID 0 then if one disk fails your data is gone.