[mythtv-users] OT: Virtualization

[jacek burghardt]

My box has 32 gb and 6 cores and that is my home box. I found out the only
way I could stop my family members from getting  viruses on windows pc is
to have them live on domain and be locked down by policy . I have zimbra in
cloud as backup but  I like exchange. I run number of applications that are
linked to my domain controler. it server really well and i have extended
family use it for stuff with no issues.


On Thu, Jul 4, 2013 at 10:42 AM, Raymond Wagner <raymond at wagnerrp.com>wrote:

> On 7/4/2013 11:00 AM, jacek burghardt wrote:
>
>> I virtualization is all about saving money an power and testing.
>>
>
> No. That's consolidation. You can run multiple servers on one system
> image. You can run multiple servers on isolated filesystems on one system
> image. You can run multiple servers on independent system images running in
> virtual machines.
>
> The feature set of virtualization necessarily encompasses many of the
> behaviors users are looking for, but full machine virtualization is not a
> necessary, nor even a desired, aspect of providing those behaviors.
>
>
>  is incorrect is very easy to pass pci devices.
>>
>
> The LinuxTV driver developers would disagree with you. Many times have
> they tried to diagnose strange behavior on some user's system, only to
> discover they were attempting hardware passthrough in a virtual machine.
> Hardware drivers make certain, entirely reasonable, assumptions about the
> behavior of the hardware they are interfacing with, and attempting to use
> hardware in a virtual machine often invalidates those assumptions.
>
>
>  The box also runs freepbx, pfsense, 3 x server 2012 ( domain controler,
>> exchange server)
>>
>
> PFSense is a special case, as a firewall application, it would need to
> directly manage the host, or at least have its own virtualized network
> stack to control. FreePBX and most other POSIX style applications would
> otherwise be perfectly content to operated in an isolated chroot,
> completely independent of any other task on the system.
>
> Windows is a bit different. Unlike POSIX, it hasn't had 30+ years of
> isolation and sandboxing tools like chroot, and applications fight a lot
> more. Further, you can't run Windows and POSIX applications on the same
> host, however often times, that's more a function of finding more
> appropriate tools for your operating system of choice. There are plenty of
> groupware tools to replace exchange, using industry standards like IMAP,
> WebDAV, and CalDAV to provide the same functionality. Samba really doesn't
> cut it as a replacement domain controller through.
>
> Of course, if you are a large enough organization to need an exchange
> server, and the management capabilities of a domain controller, chances are
> you're going to have enough load on them to merit giving them their own
> physical systems, rather than putting them on an overextended box with a
> bunch of other servers.
>
>
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