Ok, I will reboot in recovery mode to run the fsck adn try to repair the filesystem of the hdd. Also will replace the HDD. In the worst case can I copy the data of the affected hdd to other hdd and use this data (vmail and www) as usual with the current installation of ISPConfig?
yeah, just add the new drive as you would normally. just mount it to another location. once you've checked and fixed any errors on the old drive's filesystem, rsync the files to new drive, then unmount both, and remount the new drive to the original mountpoint.
Ok! Thank you for all. I will try this later on the week. I hope that i will come back with good news.
I fixed the filesystem with Fsck in recovery mode. Frist, I had to remove the hard drive from the fstab anyway so it wouldn't get remounted. Ayways I replaced the HDD to avoid future probems. It seems that all works fine. Thank you for all the help.