Xen users - Dec 2011 - VMWARE vs ORACLE VM

The xen hypervisor does not present the same driver for hardware devices such as
nic, scsi controller which means that we would have to manage device drivers
like we do with the different operating systems (win and lin/unix) whereas,
vmware presents a virtual driver to all the operating systems and it appears as
the same driver.  Basically, vmware virtualizes the hardware presented to
virtual machines where virtual machines running on oracle vm will need native
drivers.

Is the above statement correct ?


Thanks
Sunny





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On Fri, Dec 30, 2011 at 5:55 PM,  <Sunny.Biswas@sungard.com>
wrote:
> The xen hypervisor does not present the same driver for hardware devices
> such as nic, scsi controller which means that we would have to manage
device
> drivers like we do with the different operating systems (win and lin/unix)
No
> oracle vm
> will need native drivers.
No
> Is the above statement correct ?
Absolutely not.

For most practical purposes, managing device drivers for an OS running
on top of xen/xenserver/ovm requires the similar steps/effort as
managing device drivers for an OS running on top of vmware when using
pvscsi and vmxnet3.

-- 
Fajar

<agree>
anyone with remote clue will install the native vmware drivers
or "vmware tools" on windows. he who thinks that is something
different than special drivers probably doesn''t even know what a
driver is.

If THE WRONG DRIVERS are used, VMWare will have less penalty than Xen
since VMWare wrote quite good fake drivers whereas Xen uses the
not-so-good ones from Qemu/KVM.

Once proper PV drivers are installed, Oracle VM should feel snappier
and be able to prove it by numbers.

VMWare ESX 3.5 is a completely different topic, since it didn''t use
HVM yet (which, for Xen, is the slower mode of operation) and kinda
sucked. From ESX4 up it will not be horribly slow any more.

But these are sales questions anyway :p

2012/1/3 Fajar A. Nugraha <list@fajar.net>:
> On Fri, Dec 30, 2011 at 5:55 PM,  <Sunny.Biswas@sungard.com> wrote:
>> The xen hypervisor does not present the same driver for hardware
devices
>> such as nic, scsi controller which means that we would have to manage
device
>> drivers like we do with the different operating systems (win and
lin/unix)
>
> No
>
>> oracle vm
>> will need native drivers.
>
> No
>
>> Is the above statement correct ?
>
> Absolutely not.
>
> For most practical purposes, managing device drivers for an OS running
> on top of xen/xenserver/ovm requires the similar steps/effort as
> managing device drivers for an OS running on top of vmware when using
> pvscsi and vmxnet3.
yup and trying to use PVI(?) full PV mode on VMWare is quite night-marish, too.