Re: [DIYbio] Longterm genomic Data storage

On 01/13/2015 06:00 PM, Jeswin wrote:
> I thought I heard it started going away when cheap
> multi-terabyte HDDs came out.

Yes, hard drives make sense for storage. Dirvish and rsnapshot are programs
for higher level managing the rsync program for saving backups in separate
redundant locations over networks on a schedule. They let you save the
state of your whole computer by saving just the changes under different
links on the hard drive and let you have many many slightly different
versions of a 20GB file directory in a space of just 40GB.

If your data is totally new and different, then just the rsync program
used in some scripts to write to different drives that are kept in drive trays
will be plenty. After the copying to drives in drive trays is done, put them on shelves
disconnected, unpowered, and not all in the same building to have a redundant backup
that will last through time.

Even hard drives have a shelf life though. You'd need to turn them on and test
that the data is still good, and transfer to a new on every ten years or so...
They can freeze up just sitting there on a shelf.

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