Pr4100 nas enclosure

My NAS PR4100 have notified me that 1 drive is not working properly
I have raid system - spanning
Enclosure 2 has a solid red light
I bought another NAS same capacity WD RED
NAS DRIVE
shut my system down and changed the troublesome disc. Powered up and have 4 solid red lights showing

Do I format the new drive before adding to my system and click rebuild in setting menu?

Any information gratefully received thank you

GRAHAM GILES

Hi,

You may refer to the following KBA: https://support-en.wd.com/app/answers/detail/a_id/15992

Thank you Jonty