Reg: HANA In-Memory and Backup recovery

Hi All,

I have question on HANA backup recovery. Could you please provide your inputs.

HANA stores all data IN-Memory and also does a back of data to disk on a regular interval.

Let's assume I have 10 years of data form 2005 to 2015.

Question #1:

Does it means HANA stores all of this historical data In-Memory, irrespective of how frequently it is being used?

Question #2

If at all system crashes, HANA loads all the data till the last save point from the disk.

It loads all the row tables and selected column tables.

Does it again loads all historic data for past ten years?

Question #3

As per my understanding If user requests any data which is not available on In-Memory, it fetches it form disk and places it on In-Memory.

Is this data fetch operation form disk to memory in HANA faster when compared to traditional RDBMS systems.

Thanks in Advance.

Regards,

Venkat