Have you looked at AWS as a backup solution?
https://www.quora.com/Is-it
-a-good-strategy-to-backup-your-data-on-AWS-for-offsite-backups
They boast eleven 9s of reliability - that's less than 1 one-thousandths of a second of unavailability in a year, where a year equates to 365.25 days, or 31447600 seconds.
On Mon, 2018-11-12 at 22:43 -0600, gregrwm wrote:
> i'm considering prospects for offsite backup.  your comments are most
> welcome.  what options are available and sensible?  requirements
> specify metadata, filenames, and paths should be encrypted prior to
> sending to the offsite archive.  encrypted  communication together
> with encrypted storage might satisfy.  perhaps it's silly picky to
> point out there's a moment in between when it's unencrypted.
> 
> an attractive solution would be a vps with mega cheap storage.  but i
> doubt they can come anywhere near the capacity and prices of the
> likes of rsync.net.  or can they?
> 
> backuppc is doing well on-site.  i like that it does not re-transfer
> files already backed up, even when doing a full backup.  however it
> must run on the backup storage server.  i doubt that's possible with
> services like rsync.net.  or is it?
> 
> a strategy that comes to mind is to rsync the backuppc storage
> heirarchy (can omit the ?(c)pool).  last i knew, asking rsync to
> mirror such a sea of hardlinks caused it to demand obscene amounts of
> ram.  who knows, might work, might not.  newer versions of rsync
> might do better, i dunno yet.
> 
> duplicity certainly is popular, and provides encryption.  i doubt it
> is as efficient about bandwidth, or storage, as backuppc,
> particularly regarding full backups.  or is it?
> 
> if there's a trove somewhere that addresses such questions, please
> point.
> tia,
> greg
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