My Book Live 3TB disconneting itself from network

How do I get to “/var/log/kern.log and /var/log/apache2/error.log and verify the apache2 service is running” ?

In the mean time I cannot copy on the HDD anymore… from 9-17mps it drops to 80 kbps and below… a file of 380 mb lasts forever to copy on HDD. I think its time for another NAS and RMA this one.