What's with HDD?

[Bachilo Dmitry]

I keep getting g_vfs_done():ar0[READ(offset=200048066560, length=16384)]error 
= 5
I put this disk out of server and tested it with mhdd software - nothing. Put 
it back and still getting this string. I can't get what's wrong, everything 
works, but this error flows in my /var.log/messages 

Should I try dd if=/dev/ar0 of=/dev/ar0 ?
Or maybe something else?
-- 
------------------------
С уважением, Бачило Дмитрий
Руководитель отдела системной интаграции
ООО "Компания Солинк"
--
With Best Regards, Bachilo Dmitry
Head of systems integration dept
Solink Company Ltd.