LinkStation Error

[Jobos]

We have a Buffalo Linkstation Pro Duo 1TB NAS here and for the past two weeks I've been getting this error:

 

DISK Error Notification

 

HDD error occured

Disk(s) the error occurred:Disk 1

 

(sda) READ sector:46376896 count:19

Disk writing error

RAID drive error will be repaired automatically.

Continuous Back-up is recommended

 

As I keep getting the same message I take it the disk if faulty. Is this something I can repair myself?

 

Thanks.