What are the recommendations for the "best" way to preserve a copy data on a filer for future use?
Background: A company has ceased operations and wants to preserve copies of its data "just in case someone wants it in the future". All the interesting data has been copied to the a single "archive" filer. There are about eight volumes in using about 50TB (with dedupe but no compression). This will be backup copy #1. The other filers that previously held the data are being sold and scheduled to be wiped.
The data is a mixed of virtual machines and file shares.
Now I'm trying to see if if a way to make another copy of the data for safe keeping at a reasonable cost. Speed of restore would not be high the feature list of this secondary archive.
One of the first thoughts simply dump the data onto an AWS volume for "cold storage". Sane? Tips/tricks? Data presumably gets scrubbed to prevent bit rot. Conveniently available just about anywhere. Has a recurring cost but avoids some upfront cost.
Second thought is find a relatively inexpensive array of disks and dump the data to that. Most likely benefit is fastest to write to. Maybe cheapest but in the end all the data is on non-spinning disks without verification.
Tapes? I don't like tapes. Don't know if a working tape system available but if there was is this a good case for it. Tape static storage better than disk?
Thanks.
arnold