My goal with my off-site backups is to use them primarily as a 2nd backup, but also as a place for storing 'longer term' backups. Using the archive option is using a lot of space with full backups so I was wondering what others have done. I'm thinking about just increasing the amount of stored incrementals to cover what my archives would have.
Originally I setup my backup copy jobs to run daily for 2 weeks, and then checked "Keep the following restore points for archival purposes" and set it up for weekly backups for 4 weeks, Monthly for 3 months and 2 quarterly. I was aiming to keep about 6 months of backups off-site.
I expected it to do a base full, with incrementals all the way back - but it appears to have a base full with the 2 weeks of incrementals, and then a new full per archived backup - my math may be off, but in my case that would eventually be 7 full backups per copy job just for archives. Taking my one server with 2TB of used space for example, that would be 14TB of [undeduplicated] space used for backups.
In my case, the change rate on that data is VERY small - around 1.5% per week. So I'm thinking of instead just changing the retention to be 180 daily incrementals for a total of around 1-2TB. Is there a reason to not do this?