I have two servers Main and Backup, such that I want a Backup server to be able to replace the Main one as fast as possible without physically accessing them.
So I want the Main and the Backup server to see same hard drives. (Even if backup does not mount them). Also I don't want stuff like NFS and I don't have very complex stuff like SAN.
Main Backup |\ /| | \ / | | \ / | | / \ | | / \ | |/ \| HD A HD B
So Main is connected to
HD A and
HD B organized in RAID 1 and if Main crashes
Backup mounts the same set
HD A and
Also I expect that the connections would be fast and efficient (FB or stuff like that) and remote such that different disk and different servers may be placed in different enclosures.
I want this to be as simple as possible no central storage device connected via SAN.
- Are there hardware technologies to do this?
- If there are what are they where should like look from?