Comments on: VMware vSphere Cheat Sheet http://www.boche.net/blog/index.php/2009/04/22/vmware-vsphere-cheat-sheet/ Tue, 07 Feb 2012 15:34:57 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: jason http://www.boche.net/blog/index.php/2009/04/22/vmware-vsphere-cheat-sheet/comment-page-1/#comment-814 jason Tue, 26 May 2009 11:09:15 +0000 http://www.boche.net/blog/?p=1378#comment-814 Thank you for the feedback Johannes. You are right, it does sometimes resemble a comparison of religions. Regarding your last paragraph, virtualization of Terminal Services wasn't very appealing in ESX 2.x but it got a lot better in VI3. I virtualized many prod and non-prod TS boxes in my previous environment with great success and a fraction of the hardware compared to physical. Terminal Servers make great VMware workloads because of the benefit of Content Based Page Sharing. 40+ users on the same server running the same application code is almost a based case scenario for page sharing. In some cases, we were getting more users on virtual Citrix servers than we could fit on physical Citrix servers due to the memory sharing benefits. Thank you for the feedback Johannes. You are right, it does sometimes resemble a comparison of religions. Regarding your last paragraph, virtualization of Terminal Services wasn’t very appealing in ESX 2.x but it got a lot better in VI3. I virtualized many prod and non-prod TS boxes in my previous environment with great success and a fraction of the hardware compared to physical. Terminal Servers make great VMware workloads because of the benefit of Content Based Page Sharing. 40+ users on the same server running the same application code is almost a based case scenario for page sharing. In some cases, we were getting more users on virtual Citrix servers than we could fit on physical Citrix servers due to the memory sharing benefits.

]]> By: Johannes http://www.boche.net/blog/index.php/2009/04/22/vmware-vsphere-cheat-sheet/comment-page-1/#comment-812 Johannes Tue, 26 May 2009 09:09:06 +0000 http://www.boche.net/blog/?p=1378#comment-812 Yes. VMWare is very much afraid of comparison. They don't permit comparing Hypervisors, in fact, they don't even allow to install VMWare if it will get tested for performance. Even though there is a comparison at http://virtualizationreview.com/articles/2009/03/02/lab-experiment-hypervisors.aspx. But even though they are not afraid to publish wrong (or not upsolutely right) "facts". An example: Xen supports near to unlimited RAM and CPUs (actually, 10^64 Bit RAM, 1024 sockets). There are no coded Limits in Xen (see Xen's Hypervisor Source code). It would be a red flag for VMWare, but there is s small chance to bring it back to Citrix: Citrix supports just 32 CPU cores and 128 GB RAM! But OEMs may support more. Actually, my 12 Xen Servers run on 16 6 Core CPUs (i.E. 96 cores) and use 750 GB RAM. It was set up by a Citrix SE, using the regular Citrix installation CD, so don't worry about RAM and Cores. And there would be even much more to say :-P But VMWare versus Xen is a kind of religious conflict, rather like Catholics versus Protestants in Belfast. So it's not worth spending time on pointing out facts. I'd say: Xen is faster, VMWare got better tools (but Citrix improves). And VMWare is not able to virtualize terminal servers (same machines supported just 40% of users, that's why we changed terminal servers to Xen). Yes. VMWare is very much afraid of comparison. They don’t permit comparing Hypervisors, in fact, they don’t even allow to install VMWare if it will get tested for performance. Even though there is a comparison at http://virtualizationreview.com/articles/2009/03/02/lab-experiment-hypervisors.aspx.

But even though they are not afraid to publish wrong (or not upsolutely right) “facts”. An example: Xen supports near to unlimited RAM and CPUs (actually, 10^64 Bit RAM, 1024 sockets). There are no coded Limits in Xen (see Xen’s Hypervisor Source code). It would be a red flag for VMWare, but there is s small chance to bring it back to Citrix: Citrix supports just 32 CPU cores and 128 GB RAM! But OEMs may support more. Actually, my 12 Xen Servers run on 16 6 Core CPUs (i.E. 96 cores) and use 750 GB RAM. It was set up by a Citrix SE, using the regular Citrix installation CD, so don’t worry about RAM and Cores.

And there would be even much more to say :-P But VMWare versus Xen is a kind of religious conflict, rather like Catholics versus Protestants in Belfast. So it’s not worth spending time on pointing out facts.

I’d say: Xen is faster, VMWare got better tools (but Citrix improves). And VMWare is not able to virtualize terminal servers (same machines supported just 40% of users, that’s why we changed terminal servers to Xen).

]]> By: Vigo http://www.boche.net/blog/index.php/2009/04/22/vmware-vsphere-cheat-sheet/comment-page-1/#comment-774 Vigo Wed, 06 May 2009 13:39:12 +0000 http://www.boche.net/blog/?p=1378#comment-774 I agree with NiTRo. Not sure why everyone is so excited in the comments below. If VMware wants to talk about ESX4, they needs to be comparing it with Hyper-V R2 and Citrix XEN 5.5. Is VMware really so scared of competition that they are afraid to mention upcoming releases from competition (btw both in beta/RC state now)? I agree with NiTRo. Not sure why everyone is so excited in the comments below. If VMware wants to talk about ESX4, they needs to be comparing it with Hyper-V R2 and Citrix XEN 5.5.

Is VMware really so scared of competition that they are afraid to mention upcoming releases from competition (btw both in beta/RC state now)?

]]> By: VMWare Officially Announces vSphere 4 | Why so virtual? http://www.boche.net/blog/index.php/2009/04/22/vmware-vsphere-cheat-sheet/comment-page-1/#comment-758 VMWare Officially Announces vSphere 4 | Why so virtual? Sat, 25 Apr 2009 13:07:36 +0000 http://www.boche.net/blog/?p=1378#comment-758 [...] boche.net: VMWare vSphere Cheat Sheet [...] [...] boche.net: VMWare vSphere Cheat Sheet [...]

]]> By: NiTRo http://www.boche.net/blog/index.php/2009/04/22/vmware-vsphere-cheat-sheet/comment-page-1/#comment-750 NiTRo Thu, 23 Apr 2009 18:40:58 +0000 http://www.boche.net/blog/?p=1378#comment-750 Why not compare with Hyper-V R2 ? ;) BTW, ESX 4 is not available yet... Why not compare with Hyper-V R2 ? ;)
BTW, ESX 4 is not available yet…

]]> By: Mandar http://www.boche.net/blog/index.php/2009/04/22/vmware-vsphere-cheat-sheet/comment-page-1/#comment-749 Mandar Thu, 23 Apr 2009 14:45:36 +0000 http://www.boche.net/blog/?p=1378#comment-749 Excellent comparisons. Thanks for sharing. Excellent comparisons. Thanks for sharing.

]]> By: Vladan http://www.boche.net/blog/index.php/2009/04/22/vmware-vsphere-cheat-sheet/comment-page-1/#comment-747 Vladan Thu, 23 Apr 2009 10:29:54 +0000 http://www.boche.net/blog/?p=1378#comment-747 Great document you found. Good job Jason....-:) Great document you found. Good job Jason….-:)

]]> By: craig http://www.boche.net/blog/index.php/2009/04/22/vmware-vsphere-cheat-sheet/comment-page-1/#comment-745 craig Thu, 23 Apr 2009 07:49:32 +0000 http://www.boche.net/blog/?p=1378#comment-745 This is true and absolutely agree with the details you share. This is true and absolutely agree with the details you share.

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