HDD HP SAS 300GB model available withut capacity,why?help me

[everesta]

I have three brand HP 300GB SAS hard drive on HP servers, using system RAID 5, - first disk detected in Card SAS nice, but the second and third hard drive into O bytes read .... I'm confused, how do I fix the first and second hard drive. ..? Please help, Leo. Jakarta

[hddlab]

If your data is very important, seek for pro. DIY can't deal with a 0bytes problem. Don't even try to turn it on when you don't know something about HDD be cause can make more damage and boot up price.