I couldn´t find any information on the documentation of VMware about this topic. Any advise on where to find information on this is very appreciated.
VMware workstation, fusion and player are desktop productions that run on top of other operating systems like windows, linux and mac os. VMware ESX, ESXi run on bare metal directly. Since VMware Infrastructure 3 is built upon ESX and ESXi 3.X, it is ok for you to run workstation on top of VI3. But it should be pointed out that workstation running on VI3 won't support hardware virtualization even if your physical cpu ships with hardware virtualization solution. However, latest ESXi and even workstation support so called "nested virtualization" in non-production environment. Actually, I have a virtual ESXi 5 server that runs within my fusion 5.
Assuming that you mean that you want to run a virtualization solution (VMware Workstation) on top of another virtualization solution (VMware Infrastructure), although I'm not sure why you would want to do that instead of simply using a single virtualization solution (either Infrastructure or Workstation, depending on what your needs/goals are), I don't believe that it's blocked. To VMware Infrastructure, the guest OS that you're running Workstation on should just look like any other guest OS, albeit one that's probably using a lot of resources.
You might find someone else who is trying to accomplish the same thing in the Workstation community.
I am planning to use VMWare workstation for installing linux. But my use case is to have multiple kernel versions as part of development requirement.
Does VMWare allow use of this?
I mean will GRUB or loader prompt me for loading of kernel of my choice the way which it will do on actual system ?
Thanks, kedar
Yes, it will allow this. Linux does not care if it is running in a VM or on real hardware. As far as Linux knows (except for the VMWare tools, of course), it is running on real hardware.
The VM "disk" is just a file on the host file system so can be set up independently of that host file system, including boot loaders and such.
Vmware workstation mimics a true hardware installation very well, almost everything you can do in a physical box you can do in a virtual machine. It's not perfect but it is pretty close to it. I use a 2 physical machine setup to mimic a 10 machine domain lab. The ability to save snapshots or to pause a machine makes it better than a physical machine in some respects.
It is a great tool and one that I recommend for anyone learning IT
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Background:
I'm running a full-time job and a part-time job in the weekends, and both my employers have supplied a laptop for me to work on. Of course I also have my powerful workstation at home to work from, and sometimes when I'm at the office at my weekend job (it's in another city) I'm working from yet another workstation.
Problem:
That makes a full 4 PC's I'm maintaining (software versions, licences and settings) just to do my work, and believe me, my list of prefered software is way too big.
I want to setup a Virtual Desktop on my VMware server, so I can work from the same installation and same session no matter which PC I'm working from.
Now I don't have the time and money to go through a full test of each setup, so I'd like to hear your experiences on the subject.
Question:
Should I use a VMware virtual workstation with some remote logon software (like realVNC, teamviewer, logmein, whatever...) or should I invest in a full VDI system like Sun or VMware provide?
Edit:
I'm programming in Adobe Dreamweaver on Windows XP - but I run my servers on Debian and sometimes do quick edits in VIM too. First I intend to virtualize a WinXP with base installation, to see how it runs.
I am a consultant and tend to work in a variety of environments. I carry a Thinkpad running VMWare Server over Ubuntu64 with 4GB of RAM. I've got a 320GB secondary hard drive that I use just for VM's and have 25 or so different virtual machines that I boot up as the circumstances demand.
They're a mix of Linux servers and workstations, Vista workstations and XP Workstations. I rarely use the VMWare server console. I access every one of them via one of the remote access methods.
For Linux, I usually install FreeNX or NXServer for desktop access and just SSH for commandline. On Windows, I always use Remote Desktop (RDP), but, on XP, that only works on the "Pro" versions, not the "Home" versions. If all else fails, I install VNC and use that. VNC is at the bottom of my list because it really is a last resort. The only thing it's better than is not actually being able to use the machine.
However, NX on Linux and RDP on Windows work WAY better than VNC. Other than little things like font smoothing and fancy desktop effects, the only big glitch would be if you are doing much with video or audio or DirectX-based stuff. Things like YouTube or other video do NOT like to work with any remote desktop protocol that I know of.
As far as performance, using Linux as a host for VMWare provides really good management of system resources. The Windows-based VM's aren't able to just gobble up memory, but still get it when they need to.
I do C# development all day in a virtual Vista workstation on Visual Studio 2008 and have absolutely no problems having 3-4 different solutions all open at once along with the normal stuff alongside over RDP on another machine, connected via wireless VPN.
I can flip over to the host OS and it won't even be touching swap space at all. As far as I'm concerned, it's a great way to work.
If you want to work with the same installation, you should seriously consider the Remote Desktop Server/Client solution, bundled into every windows OS from XP. Basically, this app displays the view from your remote desktop to your local one, using highly compressed images; this works even via low-bandwidth internet connections
While the XP version can only handle one user simultaneously, the one in Windows Server 2003 (and in Windows Server 2008, I presume) can handle multiple users (up to a certain limit).
Disadvantages, and side-effects include:
virtual pc via RDC is slow
anything using the 3d acceleration will be slow (at least using XP/2003)
Personally, I would go down the route of using a virtual workstation with some remote logon software. The network performance of VMWare has always been good in my experience, and depending on the OS, there may be a decent remote logon provided.
I guess you can live with Logmein Free. [Or Pro if u want those features]
Well, you don't say what OSs are involved, so.....
For windows, I find that Remote Desktop works as well or better than anything else, although if you pay for the RealVNC version with the mirror driver, that's supposed to be as good.
For off site access for windows, www.logmein.com (the free version) works very well.
If Unixes are involved, then VNC is definitely the way to go, there are various solutions for doing this remotely. Everything from redirection servers, to just forwarding a port in your firewall to an ssh server and setting up the various tunnels.
Performance of VMWare is very good, and I can run a SQL Server slice, a web server slice and develop on my laptop simultaneously. The VM slices reside on a USB 2 portable drive and make it easy to port between my laptop and desktop.
VM Console works well for accessing each environment, and depending on the configuration you set up with NAT vs. Bridging you can UNC to shares on slice.
The nice by-product of this is that should you host machine take a nose dive you can quickly recover your development environment.
I'm using VMware Workstation 6.0 for simulation of tight clusters of "blades" in a "chassis". Both the host and target OSs are Linux. Each "chassis" uses a vmnet switch as a virtual backplane, to which the virtual blades connect. Other vmnet switches are used to mediate point-to-point connections between mutiple virtual ethernet adapters on each blade VM. The chassis, and thus the VMs, are brought up and shutdown rather frequently. My scripts (python) make heavy use of the VIX api, and also manipulate the .vmx config file.
What do I gain and/or lose going from VMware Workstation to ESX? Do my scripts that use the VIX api still work? Do my rather complicated virtual network topologies, with lots of vmnet switches defined as "custom", still work the same way? Is the syntax and semantics of the .vmx config file the same between Workstation and ESX?Thanks in advance for your help.
The first thing you'll gain by switching will be a substantially more powerful platform that's running directly on the bare-metal of your server.
From my experience, moving up the VMware application stack has never been problematic (Server to Workstation to ESX). However, I would verify this by exporting all of your VMs from the workstation install to an ESX install to make sure you're not seeing any 'weird' issues related to running the high-end tool from VMware.
From my [limited] experience, scripts also carry-over cleanly: each offering moving up their product line doesn't break lower-level tools, but do add substantial improvements.
You get scalability and performance.
ESX scales much better and run much faster than any of VMware desktop products like Workstation or Player.
You should not lose anything. ESXi performs all the functions that Workstation does, plus a lot more. I use ESXi at home and Workstation on my laptop.
You will gain more fine-grained control over the virtual networks, over storage, snapshots, cloning, quiescing guest OSes, and many more advanced options in ESXi configuration.
One thing to note is the considerable expense of the ESX line compared to Workstation. If you're working for a successful company, though, the cost can easily be justified as ESX is (imho) da bomb. Also, FYI, the old free VMware Server options definitely had a whole different interface.
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Curious, how many of you develop under a VMware environment?
Is it popular for employers to setup vmware for everyone?
Seems like a great way to rollout new desktop computers and perform backups etc.
Just worried about the performance though (PC vmwares).
Update
I was just looking at vmware's site, 1.3 BILLION in sales..wow!
I almost exclusively use Virtual Machines for development and am very happy doing so. The flexibility of multiple sand-boxed environments is definitely worth a small trade in performance.
Clearly a VM will never give you the same results as running on a native system, but you should be able to get performance that's easily within 10-15% of the real thing. In my experience many of the performance problems people encounter are due to underspecced or poorly configured systems and VM;s.
I primarily develop with a Vista x64 virtual machine on a 2.4Ghz Core 2 Duo with 4GB of Ram. Of this I assign 2GB of RAM and two virtual core's to my main VM. If I'm running more than one VM I usually change this to 1-1.5GB and one core.
Here's some quick GeekBench test results; (Note than GeekBench results under OSX and Vista don't seem comparable, they're listed here to show the impact of configs on both systems).
Fresh boot, no active applications:
Native OSX - 3115
Native OSX running Vista 64 VM - 3042
Native Vista 64 (2.4GHz x 2, 4GB) - 2596
Vista 64 VM (2 VCore, 3GB) - 2362
Vista 64 VM (1 VCore, 2GB) - 1892
These are the most common reasons for poor VM performance in my experience;
Under-specced machines. Ideally you should be able to dedicate one core and 1GB of memory to each VM you plan to work in. Contrary to what you might read I've found that Vista runs within a few percent of XP with 1GB of memory.
Running too many things on your VM. Keep your email, web browsing and IM's to Mummy on your native OS.
On your VM turn off items such as screensavers, background apps and non-essential services. If your VM's are backed-up you may want to turn off system restore.
If possible have your VM's on a separate hard-drive than your native OS so their disc access is independent if one or the other starts paging.
Defrag your VM drive. It does make a difference.
VMware Workstation 6.5 runs like a champ on my older Athlon X2. I use Visual Studio on my host machine and have many VMs installed with various OS, framework and browser combinations. VMware Workstation adds VM debugging into Visual Studio as well, so I can just hit F6 to start my app in any one of my VMs and debug it under any OS I want. The only catch is that you need at least 4gb RAM to make it practical to use more than 1 VM at a time.
My company uses VMware to test our webapp using different browsers/OS versions. Everyone has at least 1 VM on their machine for this purpose. We all develop on the native machine, however -- even on a quad core machine with 4GB RAM, it takes about 20 minutes to do a clean build of our app! For me, I dislike using VM images because of how much paging they do. A few developers here have started using Linux has the host OS and running Windows VMs inside it and they get much better performance due to reduced paging (Linux is way better at memory and disk cache management, plus is has a better scheduler). The extra VMs for testing that would normally be run inside our Windows instance thus get moved to run side by side on the Linux host, which improves performance.
I switched to developing exclusively in VMs around the time I started doing work with technologies like BizTalk Server, Sharepoint, and betas/CTPs of various things...it just got to be impossible to have all the stuff co-exist on the same box.
Since switching I have enjoyed many other benefits to developing in a VM - snapshots, portability, dynamically marshaling resources, etc.
The ultimate benefit is due to VMWare having a presence on many different hosts operating systems, thus I am free to select the host OS of my choice - XP, Vista, Linux, OSX, etc.
Now I run OSX on a MacBook Pro, which allows me to do Mac and iPhone development as well as Windows development, all on the same box.
That is the long winded backstory that brings me to answering the question - as long as your hardware is decently spec'd you should not run into any performance problems - even doing crazy shit with BizTalk and SQL Server.
We use it where I work. We are even making a dvd with the appliance on it to reduce the time it takes new developers to get up to speed.
Regarding performance, I have seen a performance hit. It seems mostly limited by the hard drive if you have snapshots enabled. Of course after I moved my vm's to a VelociRaptor, even that performance hit is no longer noticable.
Oh, I develop ASP websites and C/C++ applications using Visual Studio 2005 and 2008.
Sadly, it's not yet "popular" in the sense of "common," but it's definitely "popular" in the sense of "enjoyed" by those who try it. As a consultant, I love it, since it allows me to swap tool chains in a matter of minutes and, at the end of an engagement, burn a DVD, throw it in the project file, and be done with it.
Several responders seem to be emphasizing the use of VMs for testing, where I think it is beginning to gain some traction, at least within more sophisticated shops. It's clearly a huge win for deployment and compatibility testing.
Depends on the employer, I suppose. On a machine that is adequately-equipped, VMWare (or any virtualization software) performs perfectly fine. On machines that you are more likely to be forced to use at the majority of programming jobs, not so much.
I personally do not use VMWare at work. My work machine barely has enough power to natively handle the tools I need to use.
Its very popular unless employer is cheap, i used it in a few companies. its great for .NET or any language where you have to check if the thing works on different OS versions/platforms. The most common way is not to use VMWare on your own computer but to remotely join it.
I've started using VMware for almost everything on my personal PC.
I keep my native Windows install for games only and have seperate VMs for everything else:
a general office workstatation (MSOffice, accounting software, general crapware). This one stays on almost all the time.
a WAMP stack dev environment
a MS stack dev environment
a throwaway environment for beta testing and toying around with things that might break the OS install.
Everything is pretty fast. I use a streamlined WinXP base install that takes up very little space/memory.
Disk I/O seems to be the bottleneck for me, but I feel we are only one generation (6 months?) away from quite affordable SSDs.
I couldnt go back to physical computing.
Once you start using VM's you'll never go back. I use VMware on a MacBook Pro for Windows and Linux development and I'm very happy with the result.
Observations:
get plenty of RAM. 4GB is quite usable, but 8 is better. You're a developer, you have a lot of apps and web pages open, right?
allocate 1 core to the VM - it's faster than 2.
follow VMware's recommendations for allocating RAM to the guests
use a virtual hard drive for the guest OS. It's much faster than running the guest from a BootCamp partition.
VMware doesn't have the WDDM driver needed to enable Aero.
when I did an eval, the VMware Linux host video drivers didn't seem nearly as fast as for Windows or OSX hosts. Video for Windows guests is noticeably slower on a Linux host vs the other two OS's. This was the main reason I chose Mac over a Linux machine.
In my development environment I use a couple of VM's. Usually one (linux) server per role (such as subversion, MySQL databases, web server, trac server, etc.. ). This way my primary machine remains clean and can't affect my work by running amok, and the data remains secure on the VM-host.
VmWare is quite high-level, for production I'd recommend using a more low-level, bare-metal solution, like Xen.
VMWare as a windows development environment runs terrible on my dual core with 2GB ram (XP guest, XP host). Even with nothing running on the host except for VMware, constant paging that takes about a minute to settle every time I switch applications. Heck, native VS2008 doesn't even run that great during intellisense-heavy use (occasional noticible lag). While using a fixed VM image as my day-to-day working environment has a ton of benefits, the second-to-second performance lag is just too frustrating.
My employer is buying me a nice 64bit system with a ton of ram so I'll revisit the subject in a month. For now I just reimage my machine every couple months.
...console development is obviously performs just fine. for server applications (deployment) where high memory applications aren't launching and closing vmware is lovely and performs fine.
I am doing some SharePoint development and I really love the flexibility that comes from using the VMPlayer on my laptop. I have an image with WSS and the VS2005 tool chain and another image with MOSS and VS2008/SQL server 2008 when I need to it to the max.
When the 2008 image became corrupt (to many beta version I guess) I could just delete it and create a new one from a prior backup.
Being able to develop in a server environment while on the train speakes for it self.
PS: It only takes 4 GB to run the VMWare and it performing really nice, even with a slow 5600 rpm disk drive
Personally I would love to use a virtualization solution for my day to day development because of the ability to test and develop on multiple operating systems simultaneously. However, since my day-to-day development involves quite a bit of opengl this currently isn't a workable solution because most of the time the OS on the VM will default back to software rendering due to the lack of drivers and hardware acceleration.
I develop under a VMWare version of my entire network, including; AD Server, DB Server, etc, needless to say the performance is terrible even on our VMWare server that is running 4gb of ram. But it does allow me to develop without fear of accidentally destroying my companies live databases or shutting down an important server in the real world. And if something crazy happens, no biggy, I can just roll it back to yesterday. If my entire network wasn't housed inside the VMWare environment the performance would be incredible, but running all those other systems really bogs it down a lot.
We tried going all-in with VMs, but found that SQL Server running multiple times on the same physical box basically bogged it down to uselessness. However, I don't think we've seen any serious issues once the DBs were removed from the VM stacks.
Virtualization on desktop / workstation: Sun Virtualbox or VPC. Easy, light. We share our favorite images, keep it causal, and sometime even sysprep them.
Main QA environments get serious with Manager. It's a beast to get working, but can't live without it. There's no way we could afford our test matrix in real machines, or maintain it without the template management. Without such a resource, there are probably things you should do and don't.
Long lived servers or QA DB: VM Ware ESX. (No short explanation).
We don't have perf problems with DBs and virtualization. Well, I did in Lab Manager - which is part of why DB's live on ESX in our shop. For I/O, our IT guys do magic with SAN, iSCSI, and high quality wire. It is certainly simpler to avoid perf problems on db servers if they are bare metal, and probably possible to squeeze out more perf from a dedicated host.
Which brings up what virtualization is and isn't for: Virtualization isn't for a scenario where you are maxing out your hardware already. For example, I don't use it dev on, because I need everything my dev box can give me. It's to replace dozens of underutilized, hard to provision physical servers, with dozens of easy to provision virtual clones on many fewer hosts. It allows hot swapping more capacity, or allows engineering flexibility.
I also have some late 90s computer games that I run in virtualized Windows 98.