[ale] archiving backups

Vernard Martin vernard at gmail.com
Wed Aug 6 21:34:27 EDT 2014

>> magnetic media?? for home use? like what. Just askin:)
>> I have about 70GB of photos that I have right now on a number of USB
>> sticks.. the 64GB stick took 24 hours to complete the copy command..
>> oops, sorry, just checked, now it is 92GB of photos..
> Yep, magnetic media :)
> Since the whole thread was focusing on long term storage with some of
> the stored data being decades old I opted to point out the problem with
> the goal versus the media.  If this data is to continue to reside in
> some long term storage then flash is right out because of its retention.
> The other topic point was the value of the data to the end user.  The
> thread overall makes a suggestion that the data is irreplaceable and
> therefore quite valuable to the end user so I went with that, too.
> Option one is a spinning hard drive.  Plug it in, back up the data,
> power down and store in a cool, dry place.  If the long term storage
> backups are very infrequent, the drive will last many decades and the
> data retention is high for the platter media in proper storage
> environments (20-25 C, 40-60% RH non-condensing or dry nitrogen if you
> go all out).
> Option two is tape. You can use the DAT format like DAT-160 which stores
> 80GB uncompressed per tape (and may be cheaper than the more recent
> DAT-320 -- 160 GB per tape.)  HP currently sells a DAT 160 drive for
> $700+ while DAT 160 tapes are about $40 each.
> DLT is another option for tape media.  SDLT I is 110 GB per tape, SDLT
> II is 300 GB, or go so far as DLT S4 which is 800 GB per tape.  There's
> a drive on Amazon for about $500.
> LTO is yet a third option with some giant capacities in the later
> versions.  LTO-1 is 100 GB uncompressed and the current LTO-6 is 2.5 TB
> (not GB, but TB).  LTO would be one of the most current though an older
> LTO-1 or LTO-2 drive could be purchased.
> _

Also, check into M-Disc


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