Promise Pegasus R6 with 6x2T drives in RAID5.
Lateley I have had several HD crashes that I replaced and rebuild.
Last I sudenly also had a second dead drive. It was a drive that was just replaced and rebuild. Putting it active again thru command line worked. Rebuilding the 2nd dead drive (an old one) also worked.
However, I get the error MacOS cannot repair the drive "PEG C". It mentions that I can stlll see the files.
However, looking at the drive shows me a very old directory structure with all kinds of old files. Latest file seems to be may 2019. However most of the RAID was full with photo's. None of these can be found. There were also timemachine backups: none can be found.