Read-Only RAID-5 on DVD? :-)

[Harijs Buss]

Hello!

The lifetime of DVD+-R disks is probably even shorter than that of CD-R. 

Thinking about backups written on DVD+-R, should be logical to use the same 
technology as RAID-5: for example, write 4 DVD disks containing as much 
information as usually 3, but with redundant information which would allow to 
restore all info even if one (any) of these DVD's become unreadable or has 
been lost. 

For privacy lovers, these 4 (or more) DVD's could be stored each at different 
location; only when somebody has been able to collect at least 3 of them he 
would have the information available :-)  Certainly, 4 was mentioned only as 
example, this might be any number starting from 3 or more (like hard disks in 
RAID-5). 

As it happens with all good ideas, probably somebody has already thought about 
that and made some software to burn such read-only DVD RAID-5  :-)  Please 
help me with link to existing software. 

Harijs