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  1. #1

    Looking for good paper comparing Xen vs. OVZ

    Being new to VPS, still trying to compare offering based on Xen and OVZ. I've signed up for one of each, but found a lot of limitation on OVZ.

    - Network
    OVZ has funky vnet0, doesn't have MAC address, openvpn-as won't install valid license

    - IPv6
    sit0/1 not available, can't create tunnel

    - Memory
    XEN kernel already eats a lot of memory

    Any good reference of comparison of these virtual technologies?

    Thanks,
    xkey

  2. #2
    Join Date
    Apr 2009
    Posts
    604
    Check out slashdot's whitepaper on this:
    http://www.hpl.hp.com/techreports/2007/HPL-2007-59.pdf

  3. #3
    Page not found?

    with correct link below. Thanks for tips

    http://www.hpl.hp.com/techreports/20...-2007-59R1.pdf

  4. #4
    Join Date
    May 2009
    Posts
    30
    OpenVZ basically implements containers at the OS level that run what amounts to a heavily locked down chroot jail with some level of resource access control and accounting (i.e. beancounters). It has very low overhead, but can only run Linux virtual machines with a compatible kernel version. Parallels sells Virtuozzo, which is the same deal, basically, for Windows and Linux.

    Xen historically was a paravirtualizing hypervisor, and indeed still is, with the ability to run various guest OSes modified to use it. However, now, Xen supports running unmodified guests using Intel VT and AMD, which is nice in that it allows the use of such widely used OSes as Microsoft Windows.

    Moving on, we then have VMware, which is absolutely superior to the above products in terms of functionality, enterprise support and performance, and has a price tag to match. I maintain its worth it, and I view the myriad hosting providers that use Xen and other products in a somewhat dim light, but its to be expected, since most providers in this industry only care about doing stuff as cheaply as possible.
    -William Golden Wilkins
    Chairman & CTO
    Stratocenter

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