Im looking for a backup solution to backup large amount of data. My current scenario is a 2x4tb hdd in RAID 1 SATA 3 (6gb) useing intel raid controller. Every day SQL tables and other important data gets backed up to remote folder (1gbps network) and once a month I perform manual backup (full system server image) to an external HDD HD via USB3.0 interface. The problem is speed, current image useing clonezilla and no compression or verification takes almost 48hs to complete and days backups takes 1hour aprox.
The server runs a software with a database and when I perform a full backup it is not accessible I know SATA HDD as a destination would be a lot faster but server software blocks itself when it detects a hardware change if it boots to OS, so using an internal hdd to perform backup is not an option (since if pc accidentally boots to Windows Software will detect hardware change and block itself demanding time to wait for license from provider).
At the current growing I’ll need to add 2 more 4 TB hdd in march or april and 2 more by the end of year, current backup will no longer be usefull since backup procedure will take more than a weekend to perform.
I am looking for ideas to perform a backup method that in case of failure allows me to put the server operative as fast as possible, maintaining the relative high security I have now (move the image hdd to external site and store it in safe box).
Any ideas on how to manage a backup fast enough will be appreciated. Internet connection is low speed here so using cloud is not an option (1Mb upload only).