Hi everyone,

I have inherited a very tiny VM set up of 3 hosts under vCenter & vSphere 5.5. I'm also very new at the whole thing; learning as I go so please excuse any newbie questions!

I am reinstalling EXSi on to a host with two fresh 3TB hard drives following a hard drive failure. It was all going well until the installer gets to the 'Root Password' screen where it wont let me enter a password at all.

If I type nothing happens and if I press enter nothing happens, all I can do is press F9 to go back... Am I missing something or is there a reason it's not letting me enter a password?

I can find anything relating to this issue online anywhere.

Many thanks

Hello,

I have configured 2 vswitch on the ESXi to allow the communication in both voip servers to create a cluster.

Member 1 --> 192.168.100.10

Member 2 --> 192.168.200.10

I think that is a issue with ESXi because with physical servers connected on the switch works fine the Inter-Vlan.

The configuration of both vswitch is the same:

Thanks in advance!

please help to find the Adaptec ICH10R driver, for installation of esxi on raid

Hello All,

I'm having some issues getting a vswitch up and hoping to get some guidance.

The setup:

There is only a single vmnic, connected to a single vswitch with a single port group.  The Vlan ID for the port group is set to 7 and the relevant vmnic is connected to an extreme  access switch which is tagging the port for vlan 7.  The access switch is trunked to a core switch where the gateway for vlan 7 resides.

I'm using a centos 7 vm and have disabled selinux for connectivity purposes.  The vm has one active network interface and the IP/mask/gw and routing tables are all good.  Now the odd thing is that the centos vm, access switch and core switch all have complete and correct arp table entries for each other, however the vm cannot ping the gateway nor vice versa.

I also tried changing the portgroup vlan ID to 0 and ALL, but neither worked.

The portgroup security settings are:

Promiscuous Mode: Accept

MAC Address Changes: Accept

Forged Transmits: Accept

Any help is appreciated.  Thank you!

Trying to load esxi 5.5 on Supermicro X7DBU 2 x XEON L5420 2.5ghz Quad Core server from ISO.  On startup get "no operating system found."

Checked BIOS to ensure boot from disk.....Good.

Tried with usb stick, same result.

According to the VMware document, portgroup security policy should also work on SR-IOV NIC.  It means if 'Change MAC address' policy is set Accept, guest OS can change its MAC and host will accept this change on VF.

However, we observe that, when a guest OS change its MAC, it is denied by host. In host vmkernel.log, we can see following messages.  Then, all packets from that interface are dropped and we can see host log something like "vmnic2: 2 Spoofed packets detected".

ixgbe 0000:01:00.0: vmnic2: VF 0 attempted to set a new MAC address but it already has an administratively set MAC address  00:50:56:ba:db:f8

ixgbe 0000:01:00.0: vmnic2: Check the VF driver and if it is not using the correct MAC address you may need to reload the VF driver

We have ESXi 5.5 host, and Ubuntu 15.04 guest. Two SR-IOV NICs are created on the VM, and we associate them with a same portgroup in which the security policies are all accept.

In another experiment, we connect VM using non-sriov NIC, and everything works fine. Thus, we can infer it has something to do with SR-IOV.

We look at the ixgbe driver, and we have some observation.

1) It provides an ndo function ixgbe_ndo_set_vf_spoofchk() for system to call to enable/disable MAC anti-spoofing on the VF.  But we are not sure if setting portgroup policy will call this function because it does not log anything. Anyone can confirm on this?

2) The driver will always deny MAC change request from VF. What is the reason behind?

Trying to upgrade my home lab to 5.5 to test out some of the new features before getting it rolling at work and I've run into a problem with installing it.

I have a pair of hosts running 5.1 installed to a USB key with an internal SSD for use as a host cache disk (prob to be swapped to vCache if i can ever get 5.5 to install).

5.1 and 5.0 before it recognised the USB key and installed to it with no problems, 5.5 however does not see the USB key at all. In fact as far as I can tell half way through the boot (at the yellow top half point) it seems to turn the USB subsystem off entirely as the usb keyboard plugged in turns off at this point. It does however continue booting off the USB cdrom drive

My best guess is that the UEFI boot is keeping the usb controllers in legacy mode and presenting them to the boot evironment, then ESXi starts the drivers for the USB controllers attempts to take them over from the UEFI bios and shuts them down/fails to load/who knows.

Wondering if anyone else has seen this and has a workaround?

My systems are:

ASUS P8H61-I R2.0 motherboard

i3-3220 cpu

USB key plugged into usb2 ports NOT the usb3 ports

Hi i am new to VMware,I want to add new esxi 5.5 host to my cluster.

1. I am using HP Blade servers. When assigning IP i can see 4 network cards,

I will assign IP to one network card and for the other 3 should i keep them connected or disconnected. (I have distributed switch and i am using pass-thru interconnected module not virtual connect)

2. This question is not supposed to ask here.

I am using HP pass-thru interconnected modules for san switch, Should i use SC-LC or LC-LC cables to connect from this interconnect modules to the storage switch?

Hi all,

As with a lot of techie users out there, I have a homebrew ESXi host running at home for messing around with and testing. This comprises:

Tyan S5510 M/B which uses the Intel C204 chipset and SATA controller

24 GB EEC RAM

Intel Xenon E3-1235 CPU

3 x WD250 Caviar 16 RE SATA drive for datastores connected to the onboard SATA controller

+ Adaptec 5405 RAID Controller (no battery backup) with 4 x 1.5 TB SATA drive as RAID 5 for Data only - the controller is setup in passthough mode.

Now, I have been having some issue with the WD250 drives (they are a little old now) and have found that they keep disappearing from the controller, thus the VMs stop. In fact I ran 'voma' recently to check for metadata errors and it returned over 127,000 errors!!!! I am replacing the drives hopefully today. However, the drive performance even with on one VM running is pretty pants with a maximum read rate or only 20MB/s, and an average of only 2M/B/s (see the graph below showing the start up of just one VM). As a result the single VM (SBS 2011, which is based on Windows 2008R2) take around 15 minuets to boot. Now, the drive maybe only, but running on the host without ESXi (i.e. an OS load directly onto them) results in much, much, much better performances.

I do understand that with such a system compromises are enviable, but what should I realistically be seeing as read and write rates on SATA drives used for data store connected directly to the M/B controller?

Cheers

Chris

Hi all,

I'm experiencing a very unpleasant issue...

I have 3 IBM x3650M3 in a cluster with two NICs (BMC 7905) each dedicated to iSCSI, and on the other side, an IBM DS3524 (our old SAN) and a NetApp 2240 (New SAN)

I have permanent warning messages about the iSCSI performance and from time to time, a very bad disconnection (last one was this Sat) which brings the affected host and the VMs almost down. The disconnection doesn't occur always on the same host.

We have experienced this issue before upgrading our switches to Nexus 5k, so I think the network shouldn't be the problem.

All 3 hosts are running VMware vSphere 5.0 with the latest patches. Using the NetApp vCenter add-on, I setup all the parameters according to the recommended values.

VMware support says "It's the network"

Cisco says "The network is fine. Stable. No issues"

NetApp says "I can see that the connection dropped from the other side...not here"

The IBM SAN (where we still have some LUNs) says "Connection dropped unexpectedly". We don't have support on the IBM NAS.

The iSCSI vmkernel are configured according to "best practices" (individual IPs, one active and one unused nic, no failover)

My next step is to upgrade the firmware on the boxes.

Any clue where should I start looking at? Is there any "special" extra setting to configure?

Thanks!!

/var/log # vmware -vl

VMware ESXi 5.0.0 build-3086167

VMware ESXi 5.0.0 Update 3

# ethtool -i vmnic5

driver: igb

version: 2.1.11.1

firmware-version: 3.18-0

bus-info: 0000:15:00.1

~ # esxcli network nic get -n vmnic1

   Advertised Auto Negotiation: true

   Advertised Link Modes: 10baseT/Half, 10baseT/Full, 100baseT/Half, 100baseT/Full, 1000baseT/Full

   Auto Negotiation: true

   Cable Type: Twisted Pair

   Current Message Level: -1

   Driver Info:

         Bus Info: 0000:0b:00.1

         Driver: bnx2

         Firmware Version: bc 6.2.0 NCSI 2.0.11

         Version: 2.0.15g.v50.11-5vmw

   Link Detected: true

   Link Status: Up

   Name: vmnic1

   PHYAddress: 1

   Pause Autonegotiate: true

   Pause RX: false

   Pause TX: false

   Supported Ports: TP

   Supports Auto Negotiation: true

   Supports Pause: true

   Supports Wakeon: true

   Transceiver: internal

   Wakeon: MagicPacket(tm)

Hello, friends!

I need help.

Hardware:

Platform Supermicro SYS-6027R-WRF

CPU Xeon E5-2620 2.00GHz - 2 pcs

LSI Logic SAS/SATA RAID 9271-8i SGL 8 Int.

Memory DDR3-1333MHz 8Gb Kingston KVR1333D3D4R9S/8G ECC Reg CL9 (Dual Rank)

Network adapter Intel 1Gb Dual Port I350T2BLK, PCI-E x4, 2*RJ45

SAS 3,5" Seagate 300Gb ST3300657SS Cheetah 15K.7, SAS-2, 6 Gbit/s, 16Mb, 15000rpm - 4 pcs

HDD's are in Raid 10.

Software:

VMware ESXi 5.5.0 release build - 1331820 x86_64

There is only one virtual machine, type 7, with OS Windows Server 2008R2x64 standard on it.

For about 4 month everything was fine. But today I've got purple screen (see attached file).

I have been googled for a while and found this article. I'm not sure it is suitable for my case because it is about ESXI 4.0

If somebody have some experiense help me please.

Hi,

I have installed 5 HP 800 GB SSD disks (raid 5) on my HP proliant Gen8 with P420i raid controller. I have done benchmarks with iometer and the performance is really really bad compared to the spinning disks I have.

I have updated the proliant servers with the latest service packs and VMware is updated to the latest version of 5.5. HP SSD Smartpath is not enabled, nor is cache enable on the raid.

I only get 1000 IOPS... I'm expecting a couple of thousand more IOPS.

What gives? Any tips on tuning this?

Regards

I am testing one of our applications on ESXi 5.0 and are receiving errors based on openGL requirements.

From what I have read, ESXi 5.0 supports openGL, is it only a certain type or a configuration issue?

I am accessing the virtual machine as a remote desktop. My host machine I am remoting from is a Windows 7 x64.

The virtual machine is a Microsoft x32bit.

Hi there,

This is my first post here...And i am not a VMWare but a Microsoft SQL Server expert since 20 years, then i have some crucial questions

My concerns are mainly around RDM : is there any alternative to deploy a SQL Server 2012 or 2014 Failover Cluster without RDM within ESX5.1 to 6.0 ?

We would like to find a solution which would allow to share storage to the nodes without the complexity of the RDM mapping. Is that possible, or RDM is mandatory for any MSCS cluster deployment ?

Maybe SMB3.0 can be part of a solution in this case and how ?

Is NFS an option ?

I heard somewhere about storing data in datastore which would be shared between nodes - does it have any sense ? I have no idea of what it is...

Otherwise, What does implies SQL Server Always On Availability Group (non shared storage but local) in terms of storage configuration ?

Any help will be greatly appreciated, i am a bit lost

Thanks,

F

After migrating VM to a different datastore I still see on the old datastore folders named as the VM containing one or more .png files.

Can I safely remove such files and folders without impacting on the running VMs?

What are supposed to be the .png files?

Regards

marius

I'm the admin in a software test lab.  I administer three groups of vSphere hosts, one in a cluster, the other two just independent machines on the same vCenter server.  All three used to use the Windows vCenter server, back in the 5.0 and 5.1 days, but I have since switched over to the appliances on all three due to multiple issues when upgrading.  One is running 6.0, and two run 5.5u2.  All authenticate to the same AD domain, which I control. 

I have several software testers who are trying to use a system to generate multiple VMs with the same software configuration but different names and IPs that was developed by another division of the company.  There has been a problem for the last couple months, though, where the automated build fail due to an intermittent authentication fail.  All the scripted commands come from another VM on the same cluster and use the same username and password.  The failures are random, not occurring at the same point all the time, so I'm told.  I haven't been given a lot of information on it, but they expect me to find a solution.  I have been told this happens mostly on the 5.5u2 cluster.  They do use this tool on the 6.0 group but not very frequently.  I have not heard of any issues with the 6.0 group.  One thing that may be an attributing factor is that the guys who developed this and are asking me to find a solution are in Australia, while me and the hosts and vCenter appliances involved at all in Colorado, US.  All the VMs involved are in the same location, though.  There is a domain controller for the lab domain on the same cluster with the automation VMs.  So that latency should not be an issue. 

I do not know what kind of automation they are using. 

All the hosts and all domain controllers synchronize their clocks with time.nist.gov, and I have double and triple checked that their clocks all say the same thing.  If their clocks are off, it is by less time than I could move my eyes between the console windows.

I can say that when they report issues, I do not find failed authentications in the security log of the AD DC. 

Anyone have any other ideas on what could cause intermittent authentication failures like this?

After rebuilding RAID-5 diskset 1 datastore is missing.

~ # esxcfg-scsidevs -c

Device UID           Device Type      Console Device                           Size      Multipath PluginDisplay Name

mpx.vmhba0:C0:T0:L0  CD-ROM           /vmfs/devices/cdrom/mpx.vmhba0:C0:T0:L0  0MB       NMP     Local TSSTcorp CD-ROM (mpx.vmhba0:C0:T0:L0)

mpx.vmhba1:C0:T0:L0  Direct-Access    /vmfs/devices/disks/mpx.vmhba1:C0:T0:L0  139947MB  NMP     Local VMware Disk (mpx.vmhba1:C0:T0:L0)

mpx.vmhba1:C0:T1:L0  Direct-Access    /vmfs/devices/disks/mpx.vmhba1:C0:T1:L0  279964MB  NMP     Local VMware Disk (mpx.vmhba1:C0:T1:L0)

~ # partedUtil getptbl /dev/disks/mpx.vmhba1:C0:T1:L0

gpt

35690 255 63 573367600

1 2048 573367566 AA31E02A400F11DB9590000C2911D1B8 vmfs 0

~ # partedUtil getUsableSectors /dev/disks/mpx.vmhba1:C0:T1:L0

34 573367566

2016-02-29T09:24:43.861Z cpu0:2915)LVM: 2895: [mpx.vmhba1:C0:T1:L0:1] Device expanded (actual size 573365519 blocks, stored size 573357802 blocks)

2016-02-29T09:24:43.862Z cpu0:2915)LVM: 2895: [mpx.vmhba1:C0:T1:L0:1] Device expanded (actual size 573365519 blocks, stored size 573357802 blocks)

2016-02-29T09:24:43.864Z cpu0:2915)LVM: 4245: PE grafting failed for device mpx.vmhba1:C0:T1:L0:1, vol 4a596aa4-1b747129-e7e9-00215aaaed80/7099483688891184009: Limit exceeded

2016-02-29T09:24:43.865Z cpu0:2915)Vol3: 2020: Could not open device '4a596aa4-1b747129-e7e9-00215aaaed80' for probing: Not found

2016-02-29T09:24:43.865Z cpu0:2915)LVM: 2895: [mpx.vmhba1:C0:T1:L0:1] Device expanded (actual size 573365519 blocks, stored size 573357802 blocks)

2016-02-29T09:24:43.866Z cpu1:2915)LVM: 2895: [mpx.vmhba1:C0:T1:L0:1] Device expanded (actual size 573365519 blocks, stored size 573357802 blocks)

2016-02-29T09:24:43.869Z cpu1:2915)LVM: 4245: PE grafting failed for device mpx.vmhba1:C0:T1:L0:1, vol 4a596aa4-1b747129-e7e9-00215aaaed80/7099483688891184009: Limit exceeded

2016-02-29T09:24:43.869Z cpu1:2915)Vol3: 2020: Could not open device '4a596aa4-1b747129-e7e9-00215aaaed80' for probing: Not found

2016-02-29T09:24:43.870Z cpu1:2915)LVM: 2895: [mpx.vmhba1:C0:T1:L0:1] Device expanded (actual size 573365519 blocks, stored size 573357802 blocks)

2016-02-29T09:24:43.871Z cpu1:2915)LVM: 2895: [mpx.vmhba1:C0:T1:L0:1] Device expanded (actual size 573365519 blocks, stored size 573357802 blocks)

2016-02-29T09:24:43.873Z cpu1:2915)LVM: 4245: PE grafting failed for device mpx.vmhba1:C0:T1:L0:1, vol 4a596aa4-1b747129-e7e9-00215aaaed80/7099483688891184009: Limit exceeded

2016-02-29T09:24:43.873Z cpu1:2915)Vol3: 759: Could not open device '4a596aa4-1b747129-e7e9-00215aaaed80' for volume open: Not found

2016-02-29T09:24:43.874Z cpu1:2915)LVM: 2895: [mpx.vmhba1:C0:T1:L0:1] Device expanded (actual size 573365519 blocks, stored size 573357802 blocks)

2016-02-29T09:24:43.875Z cpu1:2915)LVM: 2895: [mpx.vmhba1:C0:T1:L0:1] Device expanded (actual size 573365519 blocks, stored size 573357802 blocks)

2016-02-29T09:24:43.878Z cpu1:2915)LVM: 4245: PE grafting failed for device mpx.vmhba1:C0:T1:L0:1, vol 4a596aa4-1b747129-e7e9-00215aaaed80/7099483688891184009: Limit exceeded

2016-02-29T09:24:43.878Z cpu1:2915)Vol3: 759: Could not open device '4a596aa4-1b747129-e7e9-00215aaaed80' for volume open: Not found

2016-02-29T09:24:43.879Z cpu1:2915)LVM: 2895: [mpx.vmhba1:C0:T1:L0:1] Device expanded (actual size 573365519 blocks, stored size 573357802 blocks)

2016-02-29T09:24:43.879Z cpu1:2915)LVM: 2895: [mpx.vmhba1:C0:T1:L0:1] Device expanded (actual size 573365519 blocks, stored size 573357802 blocks)

2016-02-29T09:24:43.882Z cpu1:2915)LVM: 4245: PE grafting failed for device mpx.vmhba1:C0:T1:L0:1, vol 4a596aa4-1b747129-e7e9-00215aaaed80/7099483688891184009: Limit exceeded

Hello all!

I have a HP DL360 g6 server where you installed the SAS Smart Array P411 is connected to it regiment P2000 SAS. Ned took off from a RAID 5 disk, and lost down datastore, which led to the shutdown of all the virtual machines.

I tried to solve the problem using the instructions located in this guide-

https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2046610

But it did not help!!!!

I use VMware ESXi 5.0, 623860.

# partedUtil getptbl /vmfs/devices/disks/naa.600508b1001ccc8704a7c4a430554193

gpt

273586 255 63 4395161712

1 2048 4395161678 AA31E02A400F11DB9590000C2911D1B8 vmfs 0

~ #

~ # offset="128 2048"; for dev in `esxcfg-scsidevs -l | grep "Console Device:" | awk {'print $3'}`; do disk=$dev; echo $disk; partedUtil getptbl $disk; { for i in `echo $offset`; do echo "Checking offset found at $i:"; hexdump -n4 -s $((0x100000+(512*$i))) $disk; hexdump -n4 -s $((0x1300000+(512*$i))) $disk; hexdump -C -n 128 -s $((0x130001d + (512*$i))) $disk; done; } | grep -B 1 -A 5 d00d; echo "---------------------"; done

/vmfs/devices/disks/naa.600508b1001030364642354542300400

gpt

145914 255 63 2344115120

1 2048 2344114175 AA31E02A400F11DB9590000C2911D1B8 vmfs 0

Checking offset found at 2048:

0200000 d00d c001

0200004

1400000 f15e 2fab

1400004

0140001d  44 49 53 4b 2d 31 00 00  00 00 00 00 00 00 00 00  |DISK-1..........|

0140002d  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|

---------------------

/vmfs/devices/disks/naa.600508b1001030364642354542300600

gpt

17845 255 63 286679925

1 64 8191 C12A7328F81F11D2BA4B00A0C93EC93B systemPartition 128

5 8224 520191 EBD0A0A2B9E5443387C068B6B72699C7 linuxNative 0

6 520224 1032191 EBD0A0A2B9E5443387C068B6B72699C7 linuxNative 0

7 1032224 1257471 9D27538040AD11DBBF97000C2911D1B8 vmkDiagnostic 0

8 1257504 1843199 EBD0A0A2B9E5443387C068B6B72699C7 linuxNative 0

2 1843200 10229759 EBD0A0A2B9E5443387C068B6B72699C7 linuxNative 0

3 10229760 286679891 AA31E02A400F11DB9590000C2911D1B8 vmfs 0

---------------------

/vmfs/devices/disks/naa.600508b1001cbe2b722063ab4c0a8da5

gpt

164151 255 63 2637097072

1 2048 2637096959 AA31E02A400F11DB9590000C2911D1B8 vmfs 0

Checking offset found at 2048:

0200000 d00d c001

0200004

1400000 f15e 2fab

1400004

0140001d  4d 53 41 31 32 00 00 00  00 00 00 00 00 00 00 00  |MSA12...........|

0140002d  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|

---------------------

/vmfs/devices/disks/naa.600508b1001ccc8704a7c4a430554193

gpt

273586 255 63 4395161712

1 2048 4395161678 AA31E02A400F11DB9590000C2911D1B8 vmfs 0

(It seems to me that the problem is there, but how to eliminate the lack of possessions - I Do not Know)

---------------------

~ #

~ # partedUtil getUsableSectors /vmfs/devices/disks/naa.600508b1001ccc8704a7c4a430554193

34 4395161678

~ # partedUtil setptbl /vmfs/devices/disks/naa.600508b1001ccc8704a7c4a430554193 gpt "1 2048 4395161678 AA31E02A400F11DB9590000C2911D1B8 0"

gpt

0 0 0 0

1 2048 4395161678 AA31E02A400F11DB9590000C2911D1B8 0

~ #cat /var/log/vmkernel.log

2016-02-29T07:40:39.495Z cpu15:2874)FSS: 4333: No FS driver claimed device 'naa. 600508b1001ccc8704a7c4a430554193:1': Not supported

2016-02-29T07:40:39.495Z cpu15:2874)Vol3: 647: Couldn't read volume header from control: Invalid handle

2016-02-29T07:40:39.495Z cpu15:2874)FSS: 4333: No FS driver claimed device 'cont rol': Not supported

2016-02-29T07:40:39.540Z cpu2:2874)VC: 1449: Device rescan time 70 msec (total number of devices 9)

2016-02-29T07:40:39.540Z cpu2:2874)VC: 1452: Filesystem probe time 48 msec (devi ces probed 6 of 9)

2016-02-29T08:11:20.573Z cpu0:44218)WARNING: UserObj: 675: Failed to crossdup fd 8, /dev/ptyp0 type CHAR: Busy

2016-02-29T08:11:20.573Z cpu0:44218)WARNING: UserObj: 675: Failed to crossdup fd 10, /dev/ptyp0 type CHAR: Busy

2016-02-29T08:11:20.573Z cpu9:44220)WARNING: UserLinux: 1340: unsupported: (void  )

2016-02-29T08:17:58.611Z cpu10:44600)Vol3: 647: Couldn't read volume header from control: Invalid handle

2016-02-29T08:17:58.611Z cpu10:44600)FSS: 4333: No FS driver claimed device 'con trol': Not supported

2016-02-29T08:17:58.613Z cpu10:44600)FSS: 4333: No FS driver claimed device 'naa .600508b1001ccc8704a7c4a430554193:1': Not supported

2016-02-29T08:17:58.626Z cpu15:44600)VC: 1449: Device rescan time 18 msec (total number of devices 9)

2016-02-29T08:17:58.626Z cpu15:44600)VC: 1452: Filesystem probe time 37 msec (de vices probed 6 of 9)

Please help to solve this problem!!!!

When allocating CPUs to a VM is there a difference between these two?

For example I want to allocate 4 CPUs

1 Socket with 4 cores

or

4 Sockets with 1 core

I tend to allocate 1 socket with 4 cores is this OK?

I have a client that has been having a very strange issue. Every now and then, maybe once a day or every other day, the internet connection will drop on their term server. The LAN connection will not drop however, I can ping it, RDP to it, no one connected to the term server gets disconnected, but it will lose connection to the internet. None of the other servers on this host have this issue. It will eventually come back after 30 minutes to an hour. Even stranger, if I change the IP address of the server it will regain connection, then on this new IP address it will eventually lose connection and I will change it back to the original IP and it will regain connection only to lose again the next day or so. There are no events generated when this issue occurs, there are no scheduled tasks running when this happens, there are no backups running when this happens. No errors on the host either. SFC comes back clean, chkdsk comes back clean. No duplicate NICs or IP addresses. Repaired VMware tools, removed orphaned .dlls, ran malwarebytes, adwcleaner, webroot. Everything comes back clean.

Does anyone have any thoughts?