FAILED SMART self-check

[Robert Canary]

I have RHEL machine here that becomes so unresponsive the mail server it is hosting practically stops. It is currently running a mirrored drive between sda and sdb. I have been getting the following errors in the log files, so I moved the mirrored drive to sda and disabled the (old) sda. Currently the system seems to be stable again, however, I am still getting these errors. 

Any ideas where to go to fix it. Could it be bad sectors where transferred to the mirrored drive? Running smartmontools-5.3 I 

Jul 25 04:06:58 zmail smartd[2565]: Device: /dev/sda, FAILED SMART self-check. BACK UP DATA NOW! 
Jul 25 04:06:58 zmail smartd[2565]: Device: /dev/sda, 1 Currently unreadable (pending) sectors 
Jul 25 04:06:58 zmail smartd[2565]: Device: /dev/sda, 1 Offline uncorrectable sectors J 



Robert Canary 
OCDirect Electrical-Datacomm 
(866) 594-0786 Fax 
(270) 955-0362 Voice