vSphere is an enterprise level virtualization solution. vSphere, or ESX 4.0, is VMware's final incrementation of the ESX hypervisor.

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36
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vSphere education - What are the downsides of configuring VMs with *too* much RAM?

VMware memory management seems to be a tricky balancing act. With cluster RAM, Resource Pools, VMware's management techniques (TPS, ballooning, host swapping), in-guest RAM utilization, swapping, ...
32
votes
7answers
17k views

Replace VMware vSphere infrastructure with open source alternatives?

We are planning a slow migration from VMware (and third party apps) to open source alternatives (free would be great). Basically, we want to start with some little cluster lab, then migrate the ...
30
votes
5answers
5k views

Are VMware ESXi 5 patches cumulative?

This seems basic, but I'm confused about the patching strategy involved with manually updating standalone VMware ESXi hosts. The VMware vSphere blog attempts to explain this, but the actual process is ...
29
votes
9answers
7k views

How to [politely?] tell software vendor they don't know what they're talking about

Not a technical question, but a valid one nonetheless. Scenario: HP ProLiant DL380 Gen 8 with 2 x 8-core Xeon E5-2667 CPUs and 256GB RAM running ESXi 5.5. Eight VMs for a given vendor's system. ...
20
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5answers
5k views

Why are snapshots considered as temporary backups not real backups?

I am using VMware ESXi. In our team we use to provide snapshots for long term backup. Then we faced issues like memory spillover and the server got hang up. I started reading in VMware knowledgebase ...
14
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5answers
949 views

Choosing a SAN technology for 100s of VM Web Servers

The Problem We have an issue with performance on an existing platform, so I'm turning to the hive mind for a second opinion on this. The performance issue so far relates to IOPS rather than ...
14
votes
1answer
699 views

Why is vCenter 5.1u1 exiting hosts from maintenance mode?

This vCenter server was just upgraded to 5.1 update 1. I'm going through hosts and bringing firmware up to date, then upgrading them from various versions of 5.0 to 5.1u1. vCenter 5.1u1 seems to ...
13
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1answer
1k views

vSphere - Why upgrade VM Hardware Version?

At the beginning of the year we performed an upgrade of our vSphere environment from vSphere 5.0 to vSphere 5.1 U1 Build 1063329 compromised of about a dozen ESXi hosts and a vCenter instance hosted ...
13
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1answer
215 views

How to crack the 1 Gbit iSCSI limit between ESXi and VNXe

I'm having big troubles with my iSCSI network and can't seem to get it working as fast as it could. So I've tried pretty much everything to gain full performance from my SAN, having involved ...
12
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2answers
6k views

How to manage a global VM startup order across the whole datacenter?

Suppose you have a fully virtualized VMware infrastructure: ESXi, vCenter, vMotion, HA, DRS, the whole package. Inside, you have lots of VMs, which at any given time may reside on one host or another ...
11
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3answers
34k views

How to fix “BUG: soft lockup - CPU#0 stuck for 17163091968s”?

UPDATE: I updated the title of the message, because I've recently seen more of these problems with this exact time amount of 17163091968s. This should help people investigating the symptoms to find ...
11
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2answers
2k views

VMware Distributed vSwitches (VDS) - Design, theory, *real* use cases and examples?

I'm starting to explore VMware Distributed Switches (dvSwitches or VDS) for use in existing and new installations. Assume VMware version 5.1 and newer with Enterprise Plus licensing. Prior to this, ...
11
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3answers
625 views

Combined vMotion and SvMotion via the vSphere Command-Line interface

Since vSphere 5.x we can now request a combined vMotion and Storage vMotion at the same time via the Web Client - but can it be done via the CLI (not PowerCLI)? I've read the documentation for 5.1 ...
10
votes
4answers
10k views

Best Practice: vCPUs per physical core

I am trying to find some documentation or best practice guides for virtualization with respect to provisioning vCPUs per physical core (of a CPU). If it matters, I am looking at vmWare for the ...
10
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4answers
227 views

Virtualisation management: should Vcenter, Veeam etc be on a physical machine or VM?

I've noticed that a lot of people run vCenter Server on a VM hosted on Vsphere / ESXi. This seems odd to me, because if there is an issue with the host then you will lose both the host and the ...
10
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1answer
1k views

Configuration for a two machine ESXi cluster using VSA to present local storage to VMs

I'm designing a little vSphere 5 cluster for one of our remote sites. We have some IBM x3650s that have 6x 300GB 10K RPM drives in them, along with dual quad core CPUs and 24GB RAM. Because we use HP ...
9
votes
2answers
2k views

Do I need VMWare vSphere?

I'm planning use vmware to upgrade some of very aged server instead replace with all new bunch of server. VMWare vSphere sounds great but because of low budget I can't afford for both licenses and ...
9
votes
2answers
671 views

Find all virtual machines with ballooned or swapped RAM in VMware cluster?

If I were to look at a vSphere cluster or resource pool and see a certain level of memory ballooning or swapping, how do I identify which VMs are affected? I know what to do with them once I find them ...
9
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1answer
1k views

How can I setup vSphere so that VLAN tags are not stripped at the vSwitch?

I am trying to test a VLAN-related networking issue, so I thought that firing up a couple virtual machines would be the easiest and cleanest method to test the problem. On the vSphere server I ...
8
votes
3answers
6k views

Setup of HP ProCurve 2810-24G for iSCSI?

I have a pair of ProCurve 2810-24G that I will use with a Dell Equallogic SAN and Vmware ESXi. Since ESXi does MPIO, I am a little uncertain on the configuration for links between the switches. Is a ...
8
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1answer
281 views

VMware vSphere cluster design for site redundancy

I have a question about the best design for site redudancy when using vSphere clusters. A bit of background info about our situation first though. We are a medium-sized company with two main ...
8
votes
1answer
3k views

Remotely renaming a domained Win 7 computer

I'm having a hard time figuring out how to rename a Windows 7 computer remotely. This is for automating Win 7 builds in a vSphere 5 environment, and I'm trying to get it as hands-off as I can. So far ...
7
votes
5answers
8k views

Why is the vSphere console view so slow?

Why is the Console view on the vSphere client so slow? It's a real shame because it's a shame to have to establish an RDP session every time you work on one of the VMs because of the speed of the ...
7
votes
2answers
7k views

Disk shrink does not work on ESXi guests

EHLO everyone! My first post on the StackOverflow network :) We're running some ESXi 5.0/vCenter infrastructure to host mainly Debian 6/amd64 guest systems with ext3 partitions and open-vm-tools ...
7
votes
1answer
408 views

Enabling VMware EVC on Westmere E5645 CPU only accepts “Nehalem” mode

Take the following system, a Supermicro VMware ESXi host with Intel Westmere E5645 CPUs. Part of our deployment process is to set the appropriate Enhanced vMotion Capability (EVC) level for the ...
7
votes
1answer
416 views

VMWare ESX and guest settings for Netapp cluster failover

If I'm running VMWare 5.x on FC [edit] LUNs presented from a Netapp running ontap 8.x in 7 mode, what steps should I take to ensure that the VMs can withstand a worst possible case cluster node ...
7
votes
2answers
470 views

VMWare vSphere and the move from ESX to ESXi

I was working on a standalone ESX 3.5 system last night in order to upgrade to vSphere 4.1u1. I realized that the full ESX download had been deemphasized on the VMWare website. While I've known that ...
7
votes
2answers
582 views

How to present shared storage for MS Cluster Services running on vSphere 5

I've seen two approaches to handling the presentation of shared storage to Windows Server 2008 R2 cluster VMs on VMWare vSphere. One is the traditional method of carving out a LUN on your SAN and ...
7
votes
1answer
699 views

vSphere 5.1 U1 Client - “The command has timed out as the remote server is taking too long to respond”

The Problem: What we are trying to do When trying to log into vCenter using the VMware vSphere Client we are greeted with the following error when using both Windows Sessions credentials or manually ...
6
votes
3answers
867 views

Migrate a vSphere server without vMotion

Is there a generally accepted way to migrate a virtual machine that runs vSphere from one host to another without vMotion? I have a small two-machine vSphere installation. There is no shared storage, ...
6
votes
4answers
1k views

Can you change the virtual NIC type after building a VM?

When building a VM, you can select which virtual device type you would like a vNIC to be (E1000, VMXNET3, etc). After the VM is created, can you change the type of vNIC in use on a given connection ...
6
votes
10answers
2k views

Server health monitoring software [closed]

Hey all! I am looking for some software to monitor the health status of our servers. Our environment is a pretty typical mix of HP/Dell running Microsoft Server and VMware vSphere. We are currently ...
6
votes
4answers
12k views

How do I copy an image in VMWare?

(I know this is a really noob-ish question, but I'm a noob-ish VMWare user.) I see where there's a function to clone a VM, but that appears to clone its settings (CPUs, memory, disk space). I'm ...
6
votes
1answer
2k views

Should an HA failover occur in this scenario?

I'm running vSphere 5 in an HA cluster across two hosts (vsphereA and vsphereB). I have the HA cluster configured for host monitoring and datastore heartbeat monitoring with admission control disabled ...
6
votes
1answer
5k views

Why does “eager” vs “lazy” zeroing take much longer when provisioning a VM from a template?

Slightly related to a previous question about thick vs thin provisioning, why does eager zeroing the to-be-cloned VM take longer than lazy zeroing? For example, in a recent test we ran, an ...
6
votes
1answer
513 views

Why doesn't VMWare DRS automatically migrate VMs when a host is put in maintenance mode?

We have 4 ESXi 5.0 hosts in a VMWare cluster on shared storage (NFS) with DRS and HA on. We want to perform a memory upgrade on one of the hosts. We put that host in maintenance mode but DRS did not ...
6
votes
3answers
161 views

How bad is it to use a virtual file system with VMWare?

IT is running a series of VMs that we'd like to see optimized further: if the VMs' are Windows XP, storing their NTFS images out to the virtual disk (ext3) provided by Linux/VMWare, how much of a hit ...
6
votes
1answer
232 views

Modify VM attributes from VMware CLI

There has to be a way to do this that I'm missing. I'm trying to modify attributes on a whole bunch of VMs at the same time from the CLI: Look! 24 VMs: $ vmware-cmd --server 10.91.1.1 --username ...
6
votes
2answers
9k views

vSphere 4 - how can I cancel a file copy in progress?

VMware vSphere 4 SAN storage with multiple data-stores No vCenter I shut-down a virtual machine and using the data-store browser did a copy/paste to copy the VM to a new datastore with additional ...
6
votes
1answer
379 views

Stretched datacenter between cities

We're planning to implement a stretched datacenter between our two sites. The connectivity between them is a single 100mbit QinQ connection. We have about 500 users at site A and 200 users at site B. ...
6
votes
1answer
76 views

What is the recommended way to version VMware Templates?

Assume that you're in an organisation with numerous data centres, each with their own private clouds running on VMware vCenter 5.5. There are VMware templates for different Operating Systems, ...
6
votes
2answers
371 views

Random Delays backing up VMWare Servers with Backup Exec 2012

Since upgrading to Backup Exec 2012 we have been experiencing a significant increase in backup times. The data throughput is about where it was before, the problem seems to be random delays between ...
5
votes
6answers
2k views

How should I copy my VM templates between vSphere datacenters?

Background/Environment Architecture: My current environment for $corp_overlords$ is set up in a hub-and-spoke model with a technologically well-endowed home office hub (SAN, bladecenter/bladesystem ...
5
votes
3answers
2k views

vSphere - copy virtual machine to external usb hard drive

We have an ESXi server standing somewhere else. I can connect to the server with the vSphere client. There is an external USB hard drive plugged into the server. How can I copy a stopped VM to the ...
5
votes
2answers
240 views

Networking with VMware, physical adapters and iSCSI

New VMware user here, setting up my first environment. I have an ESXi host that has four physical NiCs (NiC0, NiC1, NiC2, NiC3). I have installed ESXi, the VCVA appliance, and several VMs ...
5
votes
2answers
322 views

Which BSD best suited to run as VMware guest?

I want to deploy a VM to serve DNS and files (via NFS) to other *nix systems in my infrastructure. Due to reasons beyond my control, I need a very light OS, so I naturally choose the *BSD family. ...
5
votes
1answer
784 views

No space left on device — but there is space

I'm running an Ubuntu 12.04.1 server in a VMware virtualized environment that has a strange issue. Twice now, at seemingly random times, the machine has suddenly been unable to write to the root ...
5
votes
3answers
203 views

Where to install ESXi so that all local drives are available to VSAN

I am currently setting up a new 3-host VSAN cluster that will be placed into production soon. (Note this is the newer "Virtual SAN" (VSAN) technology, not the older vSphere Storage Appliance (VSA) ...
5
votes
3answers
2k views

Reboot Virtual Machine every 20 minutes

We need to be able to create a way to reboot virtual machines in the lab every 20 minutes automatically. Is there any way this can be done in vSphere 5?
5
votes
1answer
396 views

VMware vSphere DRS affinity rules for more than 2 guests

I've received a request to add disaffinity/anti-affinity rules on a set of virtual machines in a VMware HA/DRS cluster running VMware vSphere 4.1. The client has four hosts and wants to keep certain ...