CASO and optimized dedupe between sites for DR
Primary objective is to have backups duplicated to the secondary site in dedupe(opt) format.
Problem is what happens when the link is down between the two sites?
Surely my ability to restore on the Primary site is gone, as are backups?
To get around the link issue in a DR situation I have got the Primary CASO on the secondary site, so assuming the Primary site blows I can still do all my DR restores on the secondary site as it hosts the Primary CASO. But what if the link is only down for a day, no production backups on Primary site will work as it can't reach primary CASO
If I do distributed logs I can't do optimized dedupe unless I use SSO which has similar problem of needing the primary available for the secondary to function
The setup is:
Managed media server with Dedupe Option
Central media server with Dedupe Option
I don't want to do IDR to solve this problem because to do a DR test I have to go through the whole IDR process which seems like a sledge hammer approach.
Seems that optimized dedupe from primary to secondary site, with resilience for link failure should be a common scenario.