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10/16/2018: Michael did some firmware update on compute nodes. Michael replaced the router with EdgeRouter X. Lulu: No security updates via yum on head node. Checked all hard drives are fine. Forced fsck, root partition was 90% full. Then I cleaned up many server and job logs. Root partition is 69% 77% full. Access 3ware web interface with error message "The server at 192.168.255.100 is taking too long to respondwithout problem.