PowerVault 220s several Disks with Media Errors

Hello,

 

I have recently been introduced to Dell Powervaults and storage.

 

I have a 220s RAID 5 with 2 hot spares and about 5 drives showing with "Media Errors = 32".

Is there an easy way to clear off the Media Counts and test the disks?

What is the process as I am unfamilar with the menu options.

 

Many thanks