Getting "Logical Drive error IO fatal error" in RIS Event Log

Hi

After we changed 1 faulty harddrive in a raid (Smart Array P400 in ProLiant ML370 G5 ) we started getting "Logical Drive error IO fatal error" in RIS Event Log. I cannot find any more details, all physical drives are fine, no system status errors. at the same time I see disk warning event 153 in Windows System log.

Any ideas what might be the problem and how to sort it?

Thanks