Re: better platform for virtualization

2010-01-21 Thread Gleb Natapov
On Wed, Jan 20, 2010 at 08:39:48AM +0200, Etzion Bar-Noy wrote: > Notice, again, that KVM is VDI-focused, and as the battle in the server This statement is as far from the truth as it could get. There is nothing VDIish in KVM. > virtualization rages between the leading commercial vendors, the VDI

Re: better platform for virtualization

2010-01-20 Thread Amos Shapira
2010/1/20 Muli Ben-Yehuda : > On Wed, Jan 20, 2010 at 12:04:31AM +0200, Etzion Bar-Noy wrote: >> KVM was designed, and is focused on VDI - desktop virtualization, >> being the focus of Kumranet in the past. RedHat cannot maintain two >> virtualization platforms. > > Again, that's wrong. KVM was not

Re: better platform for virtualization

2010-01-20 Thread Muli Ben-Yehuda
On Wed, Jan 20, 2010 at 12:04:31AM +0200, Etzion Bar-Noy wrote: > PV drivers were released by Oracle, who run their own virtualization > platform based on XenCommunity. > > KVM is wasteful and requires VT support even for Linux machines. Not > only that, but its virtualized hardware is legacy old

Re: better platform for virtualization

2010-01-20 Thread Amos Shapira
2010/1/20 Gilad Ben-Yossef : > Oleg Goldshmidt wrote: > > Jonathan Ben Avraham writes: > > > > Hi Gilad, > Why do you recommend KVM over XEN? Have you fiddled with both? Are > there particular problems with XEN? > > > Apart from the fact that XEN is paravirtualization technology and > running a mi

Re: better platform for virtualization

2010-01-20 Thread Gilad Ben-Yossef
Oleg Goldshmidt wrote: Jonathan Ben Avraham writes: Hi Gilad, Why do you recommend KVM over XEN? Have you fiddled with both? Are there particular problems with XEN? Apart from the fact that XEN is paravirtualization technology and running a mission-critical Windows DomU is possible

Re: better platform for virtualization

2010-01-19 Thread Amos Shapira
Interesting. I am planning to test KVM as soon as we get some time to look at it (it's a "technology preview" in 5.4, newspeak for "beta"). My take on the short history of KVM/Kumranet/RedHat is that since Citrix owns Xen, RedHat had to jump ship to another technology to avoid dependency on a com

Re: better platform for virtualization

2010-01-19 Thread Muli Ben-Yehuda
On Wed, Jan 20, 2010 at 12:46:00PM +1100, Amos Shapira wrote: > I expect this targeting will change quickly since RH plan to replace > replace Xen by KVM (in 5.5 or 6.0?) RH already included KVM in RHEL 5.4, and will of course continue to include, sell, and support it with RHEL 5.5 and 5.6. Ubunt

Re: better platform for virtualization

2010-01-19 Thread Etzion Bar-Noy
True indeed. XenCommunity is a fine option, which I have found to be good. I have been running a bunch of servers on it, from a single VM on a physical server (to achieve the management benefits with the very minimalistic loss of Xen) to several tenths of VMs on a server in several farms abroad. I

Re: better platform for virtualization

2010-01-19 Thread Amos Shapira
2010/1/20 Etzion Bar-Noy : > PV drivers were released by Oracle, who run their own virtualization > platform based on XenCommunity. Just wondering - are these required to be installed separately when trying to run Windows on CentOS? We generally managed to do that when we tried (got stuck on none

Re: better platform for virtualization

2010-01-19 Thread Etzion Bar-Noy
PV drivers were released by Oracle, who run their own virtualization platform based on XenCommunity. KVM is wasteful and requires VT support even for Linux machines. Not only that, but its virtualized hardware is legacy old hardware supplied by QEMU. The leading virtualization solutions currently

Re: better platform for virtualization

2010-01-19 Thread Oleg Goldshmidt
Jonathan Ben Avraham writes: > Hi Gilad, > Why do you recommend KVM over XEN? Have you fiddled with both? Are > there particular problems with XEN? Apart from the fact that XEN is paravirtualization technology and running a mission-critical Windows DomU is possible mostly in theory? Disclaimer:

Re: better platform for virtualization

2010-01-18 Thread Tzafrir Cohen
On Mon, Jan 18, 2010 at 02:26:15PM +0200, Gilad Ben-Yossef wrote: > Jonathan Ben Avraham wrote: > >> Hi Gilad, >> Why do you recommend KVM over XEN? Have you fiddled with both? Are >> there particular problems with XEN? > No practical experience. > > From a design standpoint, it's architecture is

Re: better platform for virtualization

2010-01-18 Thread Gilad Ben-Yossef
Jonathan Ben Avraham wrote: Hi Gilad, Why do you recommend KVM over XEN? Have you fiddled with both? Are there particular problems with XEN? No practical experience. From a design standpoint, it's architecture is overly complex and this is very evident when you use it. It is STILL not in th

Re: better platform for virtualization

2010-01-18 Thread Jonathan Ben Avraham
mailing list , Oleg Kovalev Subject: Re: better platform for virtualization Hi, Michael Lewinger wrote: I'd like to ask your oppinion on the virtualization of several WINDOWS servers installed on a client's medium business server room. There are about 6 crucial servers

Re: better platform for virtualization

2010-01-18 Thread Gilad Ben-Yossef
Hi, Michael Lewinger wrote: I'd like to ask your oppinion on the virtualization of several WINDOWS servers installed on a client's medium business server room. There are about 6 crucial servers (priority, exchange, file server, and some others) that need to be accessible when they fail. C

Fw: better platform for virtualization

2010-01-17 Thread Shahar Dag
oops, I post it to Michael & not to the list Shahar - Original Message - From: Shahar Dag To: Michael Lewinger Sent: Monday, January 18, 2010 8:51 AM Subject: Re: better platform for virtualization Hello Michael I once took a course about Windows 2008 servers (but I am no

Re: better platform for virtualization

2010-01-17 Thread Gilboa Davara
On Sun, 2010-01-17 at 17:49 +0200, Michael Lewinger wrote: > Hi there, > > I'd like to ask your oppinion on the virtualization of several WINDOWS > servers installed on a client's medium business server room. There are > about 6 crucial servers (priority, exchange, file server, and some > others)

better platform for virtualization

2010-01-17 Thread Michael Lewinger
Hi there, I'd like to ask your oppinion on the virtualization of several WINDOWS servers installed on a client's medium business server room. There are about 6 crucial servers (priority, exchange, file server, and some others) that need to be accessible when they fail. Currently, each server has i