VMWare ESXi is an installable/embeddable virtualization platform based around the ESXi Hypervisor.

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Windows Servers on ESXi 100% CPU at year rollover

We have a number of Windows Server 2008 R2 SP1 servers running on ESXi servers. At year end rollover 2014 to 2015 the CPUs go to 100% and the machines hang. The solution appears to be a hotfix ...
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282 views

ESXi 4.1 VM gone after hard reboot

I have a serious problem here. After I forced a reboot of a freezed ESXi 4.1 server, a VM is literally gone. When I ssh to the host and run ls -lah inside the datastore, it returnes: ...
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299 views

Automating Configuration of VMware's vSwitch (OpenStack/libvirt/Nova)

There's a lot of talk now about VMware integrating with OpenStack now. I've noticed that Nova network service is working with VMware's standard and vDS. Deploying a full OpenStack instance is not ...
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303 views

Minimum Privileges for vmware user for Foreman 1.4 Compute Resource

I am currently trying to add a ESXi cluster I have into Foreman 1.4.1, and am running into a problem with permissions. Currently, I've given a service account the following rights: Datacenter-Level: ...
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63 views

SNMP OID for VMware Tools on a virtual machine

I have an ESXi host running several VMs. I use snmp to query that host for information. I need to find if VMware Tools is installed on some virtual machine. Is that possible? and If so, which OID is ...
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102 views

Cannot establish TCP connection from ESXi to port 9084 on vCenter

One of my ESXi 5.1 hosts fails to download patches from vSphere Update Manager (installed together with vCenter 5.1 on a single machine). The relevant part of esxupdate.log reads: ...
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542 views

VCenter Adding Host - Error “conflicts with an existing datastore in the datacenter that has the same URL”

We have a new Dell VRTX box (2 Blades & Shared Storage). We are getting the above error when trying to add the second host. We've created shared storage(VDISK1) which both ESX hosts have access. ...
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225 views

Сan I use IOMMU for VT-d to give each virtual machine one at a time GPU?

If I use VMWare with 4 virtual-machines and 4 GPUs (nVidia Quadro/Tesla), then can I give (move) some devices to different virtual-machines for each by a single card? If I have one of these CPU, then ...
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480 views

Add Zabbix S.M.A.R.T. monitor to ESXi 5

I have a ESXi 5.1 host with 3 Hard Disk (1 SSD, 2 Magnetic) and I want to monitor them, especially for the S.M.A.R.T Data, that is critical and preannunce an HDD break. Since I'm really unfamiliar ...
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357 views

Why is %si (soft interrupt) in top so high on my VM when I run iperf?

When I run iperf as a client on a CentOS 5 VM running under vmware, why do I see such high %si values in top? We have more experience running Xen and XenServer, and a almost identical centos install ...
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746 views

Grow the VMFS Datastore in to the new space using the vmkfstools fails

I followed Growing a local datastore from the command line to grow my local datastore from the command line. Everything went fine, except Step 11. In my case: vmkfstools --growfs ...
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159 views

Since I migrated vCenter to 5.1, some vms are migrating again and again

Yesterday I upgraded my vCenter to the last version 5.1 and I had to reconnect the hosts (running esx 5.0, last patches) Since I migrated, 5 vms (always the same) are vMotionned from host to host and ...
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367 views

Downloaded -flat.vmdk from snapshoted machine is different everytime

I have a virtual machine running on VMware ESXi 4.1.0, machine has one Thick provisioned disk stored in VM forder (residing on local datastore). I am planning to move the virtual machine to another ...
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1k views

ESXi - serial console as default console

I have headless Supermicro server with IPMI as my ESXi 5 but I would like to use serial console as default console for ESXi instead of accessing it via IPMI VGA console redirection. I have some ...
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177 views

Performance Implications of running multiple Virtual Servers using one base virtual disk?

I tried looking through old questions, but couldn't find one that hit this exact question. In VmWare's documentation on Snapshots, they mention utilizing them for a "process tree" setup. This would ...
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14 views

restore default firewall config for esxi 5.5

While trying to add a new firewall rule file I accidentally copied my new XML over the top of the primary /etc/vmware/firewall/service.xml config file. I'm booting our free ESXI 5.5 server from a USB ...
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39 views

Checking if two virtual machines are running on the same host

Is there a way to see if several Virtual Machines are running on the same host? Specifically, I have three VMWare VMs (each running a Ubuntu Server 14.04) and I have tried to compare different pieces ...
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43 views

How to make sure file in VM's folder is copied with VM when cloning VMWare Virtual Machine

I am running a vmware environment (Version 4 unfortunately) which requires me to use a bios rom file in order to run server 2012. I upload it to the root folder of the VM after creation, before boot ...
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25 views

VMware ESXi - what happens when unable to create a secondary instance of a VM for fault tolerance

Is anyone aware what would happen if VMware ESXi is unable to start back up a secondary instance of a VM configured for fault tolerance? Is there a fallback plan to try and get the VM up? Or is the VM ...
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41 views

VMware vCenter cannot connect to ESXi Hosts

I have a mixed version ESXi environment with versions 4.1, 5.0 and 5.5 hosts. I also have a standalone server, running Windows Server 2012 R2 that has vCenter 5.5 installed on it. All these servers ...
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42 views

Ubuntu dd test becoming slow over time under ESXi 5.5

I have a HP DL320e running the custom HP build of ESXi 5.5.Guest is a Ubuntu server 14.04 with vmware tools installed. Write speeds to the two SSDs in RAID1 (disk added with thin provision) are great ...
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120 views

ESX NFS error "Cannot open volume: /vmfs/volumes/

I'm trying to add an NFS share to my ESX 5.5 server. When I try to add the share, I get the following error: Call "HostDatastoreSystem.CreateNasDatastore" for object "ha-datastoresystem" on ESXi ...
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50 views

How to copy locked swap files in ESXi?

Based on this question : How to disable swap files in ESXi?. The main answer states that it is possible to extract data from the swap files (for exemple using strings) so I tried to make a simple ...
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54 views

VMWare vSphere Distributed Switch configuration of two ESXi Host

I have two ESXi hosts (5.1 and 5.5) that I added them to a vSphere Distributed Switch. The VMs in each host can ping other VMs in the same host but cannot ping other host's VMs. All the VMs are part ...
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87 views

Slow ESXi guest performance affecting entire host

I'm running ESXi 5.5 (Build 2068190) on a Dell PowerEdge R220 server with the Intel E3-1220v3 CPU. It also has 16 GB of RAM installed and 2 x 1TB SATA disks running as RAID1 using a Dell PERC H310 ...
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121 views

ESXi Windows Server 2003 Guest 32-bit Installation gets stuck on blue Starting Windows screen?

I'm trying to install Windows Server 2003 Standard Edition 32-bit as a guest on ESXi 5.1 for testing purposes; but when I try to install it, it gets stuck on the blue Starting Windows screen and the ...
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17 views

Can an ESXi 5.1 VM have Applicaiton Aware Image Processing enabled at the sametime it has Freeze/Thaw Scripts?

So you can't enable Application Aware Image Processing at the same time you have Freeze/Thaw scripts enabled. But in the event that you have a VSS Aware (such as SQL Server 2008 R2) database on ...
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54 views

Send keystrokes Vmware ESXi Linux installation

I'm trying to automate my Linux installation using VMware ESXi. The OS is a custom ISO from vendor which only asks for 2 things: 1) Check Media integrity 2) Confirm formatting existing Hard Disk. I ...
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93 views

virtualize or bypass EPT support in Vmware Esxi

I am trying to run a VM that requires EPT support, which my cpu(X7350) appears to not support.(Enabling hardware MMU creates an error saying that host does not support EPT). When I run that VM i get ...
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96 views

Processes surviving Windows VM reboots?

Summary: A long-running virtual Windows Server 2012 system this weekend became very slow; from remote we did Restart-Computer -ComputerName xyzzy -Force, which succeeded by all accounts; except that ...
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32 views

vsphere HA host monitoring

Something I stil can't figure out is the optional HA setting : "Host Monitoring". What if you ENABLE HA, but you DISABLE 'host monitoring" ? How will HA be able to detect which host doesn't have a ...
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96 views

Pfsense Openpvn and Vmware issue

Here is my network: Client --- WAN --- PfSense(VMWare) --- LAN --- vSwitch (Promiscuous) \--- ESXi Management (192.168.2.1) ...
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344 views

VMware ESXi extremely slow Virtual disk performance compared to RDM

I have a ESXi 5.5 server running with a FC SAN. The FC san is created using an openfiler OS with software RAID and exported with the qlatgt driver. Direct writes to this SAN when no VMFS is used work ...
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81 views

NFS Datastore Disconnects When sVmotion Migration is Attempted

I have a EMC VNXe 3100 and I had tested both iSCSI and NFS connections from it to my hosts, with NFS appearing to be the better of the two. So I set it up and in my testing with 1 VM everything ...
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65 views

Windows Server 2012 Cluser on VMware esxi 5.5: Rebooting passive node causes san reset on active node

I'm running a SQL Cluster on windows server 2012 on VMWare 5.5 and find that when I restart the passive node to install a patch, the active node is affected. This appears to be covered by the kb ...
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165 views

What does the ESX helper0-0 process do?

I have a laptop used for development purposes (EliteBook 8540p) upon which I have installed ESXi 5.5 to run multiple servers and make use of snapshots for rollback. After installing ESX and prior to ...
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218 views

VMware ESXi multiple I/O latency warnings

VMware ESXi 5.1.0 server showing multiple warning events: Device mpx.vmhba1:C0:T0:L0 performance has deteriorated. I/O latency increased from average value of 3913 microseconds to 530954 ...
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104 views

How do I rebuild a VMhost datastore following a corrupted installation

My server was shutdown at the weekend for a planned power outage to our building. When I tried to the bring the server back up, along with some errors about logical drives that did not exist (now ...
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185 views

Massively large number of packets dropped by interface

I have a virtual machine on ESXi 5 acting as a firewall for a PBX, it is running vyatta. When I run tcpdump on any interface, I get some ridiculous numbers! e.g. 4 packets captured 402 packets ...
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283 views

Upload from VMware Workstation 10 to ESXi 5.1 fails consistently with `Upload failed: Execution aborted.`

Situation: VMware Workstation 10 on Windows 8.1 ESXi 5.1 on HP XW6600 Connecting by IPv4 IP address (i.e. no DNS resolution is used) Both connected to the same physical Gigabit router Just ...
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143 views

HP LeftHand StoreVirtual VSA host affinity

I am testing the HP LeftHand StoreVirtual VSA for ESXi 5.x (a 3 nodes setup, hosting the VMs in the same hosts that have the VSA appliances). Is there a way to define some sort of 'ESXi host to VSA ...
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183 views

Adding external datastore to esxi, expanding datastore

I have an esxi 5.1 on a 1U server, accessed using vSphere. There are two 160G HDD's inside on RAID1. I'm looking to expand the number of VM's and the required storage is going to exceed this paltry ...
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171 views

Wrong time on RODC after dcpromo

My team has been experiencing this strange problem: After doing dcpromo (followed by reboot), the time on the newly promoted RODC rolls back to the year 2011. Before dcpromo, the time is correct. ...
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43 views

Fresh ESXi Install, Strange Routes

Hoping someone can explain and/or confirm this in their ESXi setup. On a fresh install of ESXi, when I ssh in and run esxcfg-route -l, I see the following: Network Netmask Gateway ...
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185 views

Vmware Nas slow transfer rates/IOPS

I have built a test environment with a Synology RS812+ and an old HP140 server which has a gigabit nic installed. I have dedicated one nic to the network to DHCP and the direct to NAS from the server ...
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363 views

SQL Server 2012 Cluster BSOD

I'm trying to set up a SQL Server 2012 SP1 "AlwaysOn Failover Cluster Instance" on top of a Windows Server 2012 R2 cluster (cl01) consisting of 2x 2012 R2 nodes (sql1 and sql2). Hosted on VMWare ESXi ...
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69 views

Why is there no output being returned from my check_esx_cim plugin?

I've got several ESXi hosts running v5.0.0-469512 . I'm monitoring these hosts using Icinga. Recently I had to re-install one of these ESXi hosts and after re-installing I can't get all of my ...
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1k views

VmWare Host connection keeps on breaking

I have installed VMware ESXi 5.1 and configured the static IP. When I try to connect to the host using the vSphere Client it logs in sucessfully. But after that when I try to access any thing I get ...
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442 views

Tuning performance in Windows Services for NFS — slow write performance from client to server

Background: I'm using a NFS datastore in esxi5.1 to do some ghettoVCB backups. The NFS share resides on a Windows Server 2008R2 box, using Windows Services for NFS to distribute the share. Writes to ...
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817 views

VMWare ESXi 5.0 Networking Issue

I have an issue with 2 new ESXi hosts. OS - ESXi5.0 Custom Dell ISO patched up to Build 1024429 DELL R820 with 1G network 2 ports from integrated MB NIC(Intel) connected to 2 juniper switches, one is ...