We have a server on which a raid 1 disk is trying to rebuild or sync. The disk is resyncing but the server has become unresponsive. One cannot ssh into the box nor are any of the services responding. If you are on the local lan you can ssh in but it is extremely slow so as to be useless.
What could be causing this problem? We recently rebuilt the machine with new disk when it went down about a month ago. We needed to increase the disk size anyway so took the opportunity to do so. Now I am not sure if there is some kind of hardware failure. They are sata disks using software raid.
Usually if one disk or controller goes then the 2nd disk continues to operate. Not sure what is happening now.
Any help appreciated.