A new RAID5 array with three 4TB HDDs via RST 12.9 on Z68. "Initialize" was not chosen when it was created. I copied files to it, no problem. Then the server crashed and restarted.
When it came up, the array status was Initializing" and it's been 24hrs and at 33% done.
The initialization process is always a requirement of RAID arrays; you can stop it but the RST application will try to run it every time the system is idle.
Without the Initialization process, the RAID array is not protected and you can lose all the data.
Initialization process verifies RAID integrity and HDDs status.
It is recommended to run it before adding data to the RAID configuration.
Whether initialization is important or not is not my question.
Here are my questions again:
My answers are the following
1-Initialization runs once per RAID array.
2-It might run again if the option could not finish at 100%.