Comments on: Not All FT Compatible CPUs Are Created Equal http://www.boche.net/blog/index.php/2009/07/10/not-all-ft-compatible-cpus-are-created-equal/ Thu, 09 Feb 2012 01:05:19 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Will Gillick http://www.boche.net/blog/index.php/2009/07/10/not-all-ft-compatible-cpus-are-created-equal/comment-page-1/#comment-3402 Will Gillick Sun, 24 Jul 2011 22:31:09 +0000 http://www.boche.net/blog/?p=1542#comment-3402 Hi Jason, For FT: Sandy Bridge i7-2600 or E3-1200 series? It's fascinating to follow this community--I say "follow" because I am currently bootstrapping myself into VMware virtualization and only have a few servers working (poorly)--so I appreciate your time spent on this blog. About FT: my practical concern is to buy a newest Intel CPU that works with vSphere 4.1/U1 FT. However, I cannot prove if a i7-2600 will work, or must I use a E3-1235? The VMware compatibility does not show any Sandy Bridge system, and the only hint is for SB Xeons, not i7 desktop processors. Do you know if VMware distinguishes between Xeons and ordinary i7's? (Note, I am a former Intel engineer but I can't find this answer.) --Will Gillick, San Jose, CA Hi Jason,
For FT: Sandy Bridge i7-2600 or E3-1200 series?

It’s fascinating to follow this community–I say “follow” because I am currently bootstrapping myself into VMware virtualization and only have a few servers working (poorly)–so I appreciate your time spent on this blog. About FT: my practical concern is to buy a newest Intel CPU that works with vSphere 4.1/U1 FT. However, I cannot prove if a i7-2600 will work, or must I use a E3-1235? The VMware compatibility does not show any Sandy Bridge system, and the only hint is for SB Xeons, not i7 desktop processors.
Do you know if VMware distinguishes between Xeons and ordinary i7′s?
(Note, I am a former Intel engineer but I can’t find this answer.)
–Will Gillick, San Jose, CA

]]> By: Welcome to vSphere-land! » Fault Tolerance Links http://www.boche.net/blog/index.php/2009/07/10/not-all-ft-compatible-cpus-are-created-equal/comment-page-1/#comment-1110 Welcome to vSphere-land! » Fault Tolerance Links Thu, 20 Aug 2009 22:45:30 +0000 http://www.boche.net/blog/?p=1542#comment-1110 [...] VMware vSphere 4 Fault Tolerance: Architecture and Performance FT Problem Decoder Chart Not All FT Compatible CPUs Are Created Equal Demo of Fault Tolerance (video) VMware Fault Tolerance FAQ (KB Article) Reducing FT logging traffic [...] [...] VMware vSphere 4 Fault Tolerance: Architecture and Performance FT Problem Decoder Chart Not All FT Compatible CPUs Are Created Equal Demo of Fault Tolerance (video) VMware Fault Tolerance FAQ (KB Article) Reducing FT logging traffic [...]

]]> By: MB-NS http://www.boche.net/blog/index.php/2009/07/10/not-all-ft-compatible-cpus-are-created-equal/comment-page-1/#comment-1054 MB-NS Sun, 02 Aug 2009 14:05:31 +0000 http://www.boche.net/blog/?p=1542#comment-1054 Hello, I noticed this some time ago and was really disappointed that the *newest* CPU (Nehalem with Core i7 microarchitecture) don't allow to turn FT on a powered-on VM, whereas older CPU do. And I'm not sure it's about to change anytime soon... It also raises one question, because after a FT failover (one host crashes, the secondary VM become the primary), ESX is supposed to recreate a secondary VM elsewhere. Does this count as re-enabling FT in the VM too ? Because then, to restore the VM protection after a failure, you would need to... shut it down. Nice ! Hello,

I noticed this some time ago and was really disappointed that the *newest* CPU (Nehalem with Core i7 microarchitecture) don’t allow to turn FT on a powered-on VM, whereas older CPU do.
And I’m not sure it’s about to change anytime soon…

It also raises one question, because after a FT failover (one host crashes, the secondary VM become the primary), ESX is supposed to recreate a secondary VM elsewhere. Does this count as re-enabling FT in the VM too ?
Because then, to restore the VM protection after a failure, you would need to… shut it down. Nice !

]]> By: FT Problem Decoder Chart - boche.net - VMware Virtualization Evangelist http://www.boche.net/blog/index.php/2009/07/10/not-all-ft-compatible-cpus-are-created-equal/comment-page-1/#comment-1034 FT Problem Decoder Chart - boche.net - VMware Virtualization Evangelist Sat, 11 Jul 2009 03:14:42 +0000 http://www.boche.net/blog/?p=1542#comment-1034 [...] The root cause for the example shown above is the processors support FT, however, not while the VM is powered on. For the AMD Opteron 2356 Barcelona processors, FT is supported but the VMs must be in a powered off state to enable FT, which leads me to my next blog entry… [...] [...] The root cause for the example shown above is the processors support FT, however, not while the VM is powered on. For the AMD Opteron 2356 Barcelona processors, FT is supported but the VMs must be in a powered off state to enable FT, which leads me to my next blog entry… [...]

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