Troubleshoot Windows server reboot

systeminfo | grep “System Boot”

Get-EventLog System | Where-Object {$.EventID -eq “1074” -or $.EventID -eq “6008” -or $_.EventID -eq “1076”} | ft Machinename, TimeWritten, UserName, EventID, Message -AutoSize -Wrap

If your hardware uses BMC/IPMI

ipmiutil see list
001f 05/16/17 10:38:31 INF Sms  OS Critical Stop #00 OS Graceful Shutdown 6f [03 ff ff]
0020 05/16/17 10:38:31 CRT Sms  OS Critical Stop #00 Runtime Crit Stop 6f [01 0f 0f]
0021 05/16/17 10:39:53 INF Sms  OS Boot #00 C: boot completed 6f [01 ff ff]
0022 05/16/17 10:48:57 INF Sms  OS Critical Stop #00 OS Graceful Shutdown 6f [03 ff ff]
0023 05/16/17 10:48:57 CRT Sms  OS Critical Stop #00 Runtime Crit Stop 6f [01 0f 0f]
0024 05/16/17 10:50:14 INF Sms  OS Boot #00 C: boot completed 6f [01 ff ff]
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Display human readable with dmesg

$dmesg -T | head
[Wed May 24 05:06:52 2017] Initializing cgroup subsys cpuset
[Wed May 24 05:06:52 2017] Initializing cgroup subsys cpu
[Wed May 24 05:06:52 2017] Initializing cgroup subsys cpuacct
[Wed May 24 05:06:52 2017] Linux version 3.10.0-514.2.2.el7.x86_64 (builder@kbuilder.dev.centos.org) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-11) (GCC) ) #1 SMP Tue Dec 6 23:06:41 UTC 2016

VMFS does not stripe across LUNs or extents

Note that the VMFS does not stripe across LUNs when more
than one LUN is allocated to a given VMFS volume.

VMFS Best Practices Guide

The hosts try to put distance between themselves on the datastore to reduce any contention for resources, but they still try to keep the objects that they manage close together.

VMFS Extents – Are they bad, or simply misunderstood?