Hi All,
I'm looking into a number of options for data archival and long term backup.
I already have a reasonably good backup system which uses multiple drives (internal and external) for the really important stuff (documents and family photos).
I'm considering a long term archival solution which will keep about 3TB of data safe for the next decade or two, somewhere off-site.
I looked into MDisks and Blu Rays but I'm not sure if this is the right solution for me
.
Used external SAS tape drives are becoming really cheap (LTO4 approx 100€/$/£, LTO5 approx 200€/$/£)
Any thoughts or recommendation? I know that many of you are IT professionals, any suggestion would be appreciated. 
thank you!
FT