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  • What are optimal strategies for using mapreduce and other applications on the same server?

    - by user45532
    I have two applications that I need to run continuously to process data. 1.) An app that processes and aggregates information from sources 2.) A mapreduce workflow* that processes the above info I've thought about either getting vps hosting or getting my own inexpensive server and using xen to split the resources of the server. Getting a quad core box with 2 GB of Ram seems a lot cheaper than the grid options I've seen at slicehost, rackspace and others...

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  • Deploying virtual machines - Windows Guest/Linux Host or vice versa?

    - by samoz
    I'm looking to deploy several virtual machines for users. They need access to both Windows and Linux. They also need to use the computers graphics card (for Photoshop, modeling, etc) under Windows. My question is, will an Ubuntu host/Windows guest or a Windows host/Ubuntu guest be faster? I'm somewhat worried about Windows getting a cluttered registry and slow, but on the otherhand, a Windows host would have direct access to hardware (Unless I'm just unaware of how to grant hardware access to a guest). Does the choice of software (VMware or VirtualBox) effect the choice?

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  • Starting VM as an executable with as low overhead as possible

    - by Robert Koritnik
    Is there a solution to create a virtual machine and start it by having an executable file, that will start the machine? If possible to start as quickly as possible. Strange situation? Not at all. Read on... Real life scenario Since we can't have domain controller on a non-server OS it would be nice to have domain controller in an as thin as possible machine (possibly Samba or similar because we'd like to make it startup as quickly as possible - in a matter of a few seconds) packed in a single executable. We could then configure our non-server OS to run the executable when it starts and before user logs in. This would make it possible to login into a domain.

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  • Storage replication/mirror over WAN

    - by galitz
    Hello, We are looking at storage replication between two data centers (600km apart) to support an active-passive cluster design for disaster recovery. The OS layer will be mostly Windows Server 2003/2008 with some OpenSuSE Linux used for performance monitoring on VMWare or possibly XenServer. The primary application service to replicate is Nvision. Datacenter 1 will have two storage systems for local active-passive or perhaps active-active replication with Datacenter 2 used as a last resport disaster recovery site. We have a handle on most aspects, but I am looking for specific recommendations on storage platforms that can handle remote replication cleanly. Thanks.

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  • Clone current host OS to a guest virtual machine.

    - by ProfKaos
    I would like to run a few repeated checks on a setup procedure I am documenting, to verify my document. I would like to somehow create a VM that replicates the environment on my machine, i.e. the host machine, onto a guest VM. Then I can use Windows' System Restore on the guest to start at the point before I commenced the setup procedure and repeat it as many times as required until no more trial-and-error etc. is required to supplement my document. I have Virtual PC and VirtualBox available to install as host environments, running on Windows 7 Professional.

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  • Is it possible to cause artificial network packet loss or latency?

    - by nbolton
    I'm trying to reproduce some issues on a deployed application where the MSSQL server and client are running in two separate machines. I think there may be network issues between the two machines, so I'd like to try and reproduce these conditions on two Hyper-V virtual machines (on the same virtual server). Of course, the network for these virtual machines is "local" so it's actually far from the conditions in a live environment. Is there a program I can run on either virtual machine which will degrade the network performance? Or maybe any other work arounds? For example, one way to reproduce the conditions may be to run the VMs on separate Hyper-V servers in geographically dispersed locations (so the SQL traffic goes over VPN or something) -- but this is a little long winded I think. There must be a simpler way.

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  • Booting a native Windows install in Virtualbox: is it possible?

    - by Aron Rotteveel
    I am looking for something similiar to Bootcamp. Currently, I run Ubuntu Maveric as my primary operating system and run Windows 7 in Virtualbox. For some tasks, however, running Windows virtualized just seems to result in too much overhead and speed loss, and I'd like to be able to boot natively. The ideal situation would be to setup Windows and Ubuntu in dual boot on seperate partitions, with the ability to boot the Windows partition in Virtualbox on Ubuntu as well. Is this possible? Also, how it is that Bootcamp seems to be the only system capable of this?

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  • In a Virtual Machine, is the Virtual Processor using RAM or part of the Processor?

    - by Jason H
    I am running a 15" MacBook Pro (2.66GHz) and 4GB of RAM. I am considering downgrading to a 13 MacBook Pro (2.4GHz) with 8GB of RAM. Most of what I do at work is through Windows and I need to run it virtually. So my real question is when running a virtual machine will the virtual processor be utilizing RAM or part of the hosts processor? My assumption is that it will utilize the allocated RAM but I have seen zero documentation to support that.

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  • VirtualBox without X server

    - by nccc
    I want to run a guest operating system under a Linux host with VirtualBox, but I don't want to run from within X. I don't want a headless configuration, I don't want to run VirtualBox in the background, I don't want any remote protocols. I just want the guest OS to take control of my console (keyboard, mouse and monitor) and render to the framebuffer directly, not from within an X window. Is this possible?

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  • Can an ESX server under heavy load cause cpu spikes on guest VM's?

    - by ReferentiallySeethru
    So we have a number of vm's running on an ESX 4.1 server for product testing. The ESX Server is at times under heavy load. We've been experiencing high CPU levels during some use cases, but we can't always duplicate this. If the ESX server as a whole is under heavy load could this cause guest machines to show high CPU usage? To ask it a different way, if the guest machines require more cpu resources than the server has, how does this affect CPU usage as indicated by the OS and process?

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  • VPN server on Windows Server 2008 for a small office

    - by cmbrnt
    I'm going to refurbish the IT-infrastructure for a small organization with one single office, and I'm not sure what VPN server to use. In your opinion, would the built-in Windows Server 2008 VPN server suffice or are there any specific problems with it as opposed to, for example, OpenVPN? I'd rather run a Windows native VPN server, but if there are few (preferably free) good alternatives, I could install VMware ESXi and virtualize both Windows and an OpenVPN-server. By the way, because of a low budget this office runs a solution with only one physical server. Any advice would be great to help me grasp this field of which I'm quite a novice. Thank you!

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  • Hyper-V VM's cannot access Host resources, and vice-versa

    - by Agent
    I have several Hyper-V vm's running on this Win2008 R2 Server box, and up until a reboot of the host server, all the VM's were able to access shared folders on the host. Now, they can't even ping the host server. From what I've seen, I need to setup an Internal only network through Virtual Network Manager in Hyper-V. I set this up, then tried to enable the Microsoft Virtual Network Switch Protocol option in this Internal Only NIC, but I get popups saying: Your current selection will also disable the following features: Microsoft virtual network switch protocol Which is absolutely stupid, considering the protocol is what I'm ticking the checkbox to Enable! As of now, on the host, I have 2 NICs: Physical - This NIC on the host machine does have the MVNS protocol enabled Virtual Network Adapter - Created through Hyper-V Virtual Network Manager as an External type of network. Trying to enable MVNS on this NIC also produces the error above. I've tried enabling Client for Microsoft Networks on the physical NIC for IPv6, but everytime I do that, all the VMs lose Internet connectivity and I cannot RDP into them. Anything else I can try?

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  • SQL server in VMware

    - by UndertheFold
    Please provide your tips and best practices for virtualizing SQL Server in VMWare ESX I am interested in advanced configurations and settings. Please provide reasoning behind your recommendations Edit: Just to clarify, I already have over 70 Virtual SQL servers in separate clusters using an ISCSI equallogic San - What I am really looking for are those advanced configurations like: How you configured your disks / RDM's Do you make use of settings like Mem.ShareScanGHz - http://communities.vmware.com/thread/143828 - that are not well documented

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  • How to add a VM Server to a VM Domain when the host is not on that domain.

    - by Charlie
    I have created A VM running Windows Server 2008 R2, using VMWare. I have configured this as a domain controller running a Windows Server 2008 domain. I have also created another VM running Windows Server 2008 R2. The HOST machine is using Windows 7 Professional 64 bit. When I try to add the second VM into the domain that the first is the DC for it fails as the VM cannot contact the DC. Simple question really. What have I missed? Is it something to do with the configuration on the Host machine? What do I need to do to enable this scenario? Thanks

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  • Create a home virtual network

    - by Tom Lisc
    I can't seem to get answers to this question. I want to setup up 2-3 computers in my house to run Linux based virtual machines fed from my dedicated Arch Linux server. I need them to have full sound and video support. At my workplace we use VMware (View), but that is too cost prohibited for me to deploy for my wife and the two 10 year olds. I have tried Virtualbox machines and they are fine, but I cannot get sound working. Any help/hints would be greatly appreciated.

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  • Sizing Switches for Storage and Production

    - by Untalented
    Couple questions. Should you always completely separate the storage network switches from production switches or are VLANs fine to segment this traffic? Is there a golden rule here? How do you properly size a switch for your environment based on the specifications the manufacturer provide (Throughput, Forwarding Throughput, Stacking Throughput, Max Mac)? If you have two switch options and one has a maximum Mac address of 8,000 vs. another with 16,0000. What does this really mean to me? How do make sure one vs. another is sized properly for me? Besides VLAN and Jumbo Frame support, is there any other "Must" haves for a virtual environments production or storage networks? There is a wealth of knowledge on sizing SANs and such, but this seems equally important and it's quite challenging to find as much information. -- Just to add some tidbits of information for the environment. This setup above is referring to the data centers which supports two different locations which have about 100 users between the two in total. The storage traffic will be iSCSI and will be 3 ESXi Hosts and one SAN housing about 2.7TB of data. Since there is currently no storage network in place (no SAN), I'm having a hard time regarding #2 to really determine what backplane throughput and switch specifications will be sufficient.

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  • Connect to vmware virtual machine via network

    - by Arnis L.
    I want to connect to my vmware vm from home. To work network i'm connecting through VPN. VM sits on one of the workstations (can connect to it through RDC). Any tips how to do that? What software do i need (got VMWare workstation atm)? p.s. i'm quite a newbie at this.

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  • Maintaining a set of (virtual) windows XP machines

    - by Frank Meulenaar
    I have a small set (currently 3, going to 6, not going to be more than 10) of (virtual, vmware workstation) windows XP machine's. They are similar but not exactly the same. I'm currently rolling out windows updates etc by hand: start machine 1, update, close, etc; I'd like to review the updates first before the clients can install them. Incidentally there are also other updates to be performed: changes some files on all machines, install new Java versions, etc. What's a good way of doing this automatic? I tried to search for this but things like Active Directory seem overkill to me.

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  • Hardware changes to require XP Activation ? (for a Virtual Machine)

    - by NVRAM
    I have WXP-64 running on a VM and, for testing and performance reasons, I would like to occasionally change the allocations for it. Changes might include: Number of CPU cores, Amount of RAM Add/remove network adapters. But I'm concerned that XP will demand re-activation and that I might eventually have licensing issues if I do this. So, can anyone tell me: What kind of changes trigger re-activation in XP? Is there limits or caveat with regard to re-activation? I've perused this question and the article it references, but wanted more recent and verified info. (FWIW, I'm not trying to cheat: the OS copy was purchased explicitly for the VM.)

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  • Migrating a running production server to Xen, unmodified as a second HDD?

    - by DaveCol
    I have a production server which I am looking to virtualize via XEN. For this purpose I have purchased a new Sata HDD, in which I have promptly installed CentOS 5.5 x64 with XEN server installed. Now I have two HDD: /dev/sda1 running as host with Xen Server Installed; and /dev/sda2 which is the HDD where the original server has installed. Is it posible to use /dev/sda2 to work as GuestOS in a xen server? Would I have to modify its kernel? Thank you for any input

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