I'm working with servers.
maybe this is not the right place to ask about hardware but will try anyway.
I'm just wondering how controller cache and battery is working.
1. I asume that the cache module does that server is faster, because it can write to cache even if C drive is occupied by another job.
2. I also asume that cache can hold last data if server goes down, because of the battery, and restore this data when server starts again.
But is battery nessesary in ex. 1 or only in 2?
Can ex. 1 be possible without battery and only cache module?
or am I totally wrong about the cache and battery use?