Storage Vmotion for linux VM

Hi Experts ,

I have two VMs which are misconfigured. Each VMs have two disks(vmdk) allocated. One vmdk which is about 50 gb was misconfigured and was allocated to ESXi local datastore.The other vmdk2 which is 300 gb is allocated to shared datastore. We don't have any issues with the vmdk2.

So the vmdk1 which is also the root disk o this linux VM need to be migrated to shared datastore coming from storage.

Any idea how to proceed with this migration, it will be great if it can be done without downtime.

Thanks in Advance.