Hardware
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HP ProLiant DL360 G5
(2) Intel Xeon 1.60GHz
5 GB RAM
Proxmox installed on internal drive
VMs hosted on NFS share (Snap Server 410)
GB connection between server and NFS share.
Syslog excerpt
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Mar 27 07:17:01 th-srv-prxmx01 /USR/SBIN/CRON[987124]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Mar 27 07:32:25 th-srv-prxmx01 rrdcached[1325]: flushing old values
Mar 27 07:32:25 th-srv-prxmx01 rrdcached[1325]: rotating journals
Mar 27 07:32:25 th-srv-prxmx01 rrdcached[1325]: started new journal /var/lib/rrdcached/journal//rrd.journal.1332851545.995433
Mar 27 07:32:25 th-srv-prxmx01 rrdcached[1325]: removing old journal /var/lib/rrdcached/journal//rrd.journal.1332844345.995458
Mar 27 08:15:40 th-srv-prxmx01 kernel: vmbr0: port 3(tap102i0) entering disabled state
Mar 27 08:15:40 th-srv-prxmx01 kernel: vmbr0: port 3(tap102i0) entering disabled state
Mar 27 08:17:01 th-srv-prxmx01 /USR/SBIN/CRON[989407]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Mar 27 08:17:26 th-srv-prxmx01 ntpd[1278]: Deleting interface #24 tap102i0, fe80::f8cb:91ff:fecb:cc9c#123, interface stats: received=0, sent=0, dropped=0, active_time=936000 secs
The syslog is an excerpt from one particular incident this morning. The machine went down right about 8:15. The logs from other occasions are very similar, with no obvious error. Windows event logs show nothing out of the ordinary.