DELL Power vault_MD3420 - Virtual disk not on preferred path error.

Hello Friends,

                         We have DELL MD3420 Power vault device with 2 SSD and 4 HDD. We've got an error message saying " Virtual disk not on preferred path". Can anyone please explain what is it ? 

Found below recovery step on the internet, 

    Redistribute virtual disks manually can fix this issue.

My doubt is that, this storage device has database running 24x7. Doing above recommandation wont distrub my database ? Whether any downtime or restart required if i Redistribute virtual disks manually ?

Please advise to clear this error.