Dear all, Not sure if this is the right forum to post this query, please redirect me if not so. We have recently replaced some of our diskless compute nodes with DELL PowerEdge C6400 servers. Strictly speaking, these systems do have internal disks, but they are used as working area, with a common operating system (Centos 7) image served from a master node. While all appear to be working well, but we have found these C6400 nodes getting frozen up intermittently, while at the same time, the other Supermicro based nodes are working fine. When these systems freeze, they do not respond to ip ping, or even to console logins, just hang. The only way out is to power reset the systems, then they return to normal service again. Has anyone encountered similar problems, or any idea what I have missed? Many thanks in advance. Peter Chiu STFC Rutherford Appleton Lab RAL Space UK
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