10 septembre 2014

Avec le Xeon E5v3, Intel veut moderniser les datacenters

Intel propose pas moins de 32 variantes de son Xeon E5-2600 v3. HP, Dell, Cisco, Lenovo et IBM sont parmi les premiers à proposer des serveurs reposant sur la puce Intel Xeon E5-2600 v3, qui apporte le support de la mémoire DDR4 et du 40 Gigabit Ethernet. Selon Jean-Laurent Philippe, directeur technique avant-ventes chez Intel, les dernières puces pour serveurs de la firme, les Xeon E5v3 (nom de code Grantley), vont permettre de moderniser « les datacenters traditionnels» en offrant davantage de coeurs - jusqu'à 18 - pour... [Lire la suite]
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05 mai 2014

Comparatif des performances des antivirus 2013

Encore avec un décalage, voici un comparatif intéressant de l'impact des antivirus sur les ordinateurs : http://www.av-comparatives.org/wp-content/uploads/2013/11/avc_per_201311_en.pdf http://www.av-comparatives.org/performance-tests/     
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23 septembre 2013

Troubleshooting virtual machine performance issues

Here is our third Support Insider Live video episode with tips straight from the mouths of our front-line Technical Support Engineers. Our video today features Sajjad Siddicky talking about his go-to tools for troubleshooting performance issues with virtual machines. Performance of our vms is something we are all concerned with, but where does one start? Check out this two minute video: --> please see the rest on the blog : http://blogs.vmware.com/kb/2013/09/troubleshooting-virtual-machine-performance-issues.html
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23 avril 2013

Yet another reason to move your VDI to Windows 8

Yesterday I published a blog post entitled “Why you should move your VDI to Windows 8” comparing different versions of Windows during IDLE and Login process. One of my readers (John Hardman) suggested that I also should measure disk IO commands issued from multiple Windows OS during boot time. What I found in the additional test is another pretty compelling reason to move VDI environments from Windows 7 to Windows 8. In this test Windows 8 excelled when compared to Windows 7. During the boot process there were 54%... [Lire la suite]
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15 janvier 2013

vSphere 5.1 – VMDK versus RDM

It seems the debate between using a VMDK on VMFS or an RDM still rages when it comes to the question which one is better for performance. The VMware team has published a lot of evidence in the past that the difference is very minor, in fact difficult to measure accurately and probably unperceivable to customers.  Definitely not worth giving up the value of encapsulating a VM. Published Dec 7, 2007 (on ESX 3.0.1)http://www.vmware.com/resources/techresources/1019 Published Feb 13, 2008 (on ESX... [Lire la suite]
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03 janvier 2013

vSphere 5.1 Performance History issue!

I was just made aware of this issue with the vSphere 5.1 performance history charts. The symptoms are straight forward: You see only the last 30 days of performance history in the ‘past year’ view Only one month of performance history appears when trying to see the past year VMware is working on a solution for the problem currently. It seems the problem has been identified (stored procedure purging data) and hopefully a fix will be released soon. Please subscribe to the following KB to be kept up to... [Lire la suite]
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28 novembre 2012

Performance Tuning Guidelines for Windows Server 2012

This guide describes important tuning parameters and settings that you can adjust to improve the performance and energy efficiency of the Windows Server 2012 operating system. It describes each setting and its potential effect to help you make an informed decision about its relevance to your system, workload, and performance goals. The guide is for information technology (IT) professionals and system administrators who need to tune the performance of a server that is running Windows Server 2012. --> please see the rest on the... [Lire la suite]
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19 novembre 2012

Windows Server 2012 File Server Tip: Switch to the High Performance power profile

When you install a fresh copy of Windows Server 2012 and configure it with the File Server role, the default Power Setting balances power efficiency and performance. For this reason, even if you have a few high speed network interfaces and the fastest SSD storage out there, you might not be getting the very best IOPS and throughput possible. To get the absolute best performance from your file server, you can set the server to the "High Performance" power profile. To configure this using a GUI, go to the Start Menu, search for... [Lire la suite]
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19 novembre 2012

Top VMware and Hyper-V Metrics

VMware and Hyper-V Metrics that shows the Performance Issues This whitepaper provides descriptions of Top VMware and Hyper-V metrics – those 20 metrics collected from VMware’s vCenter that indicate when resource-related bottlenecks and capacity issues are occurring. The second part of the paper is oriented on Microsoft’s Hyper-V metrics. Some of those are critical and are related to VMs, where others are less known, but necessary to understand how to quickly check performance of Hyper-V. What’s examples of metrics you’ll find in... [Lire la suite]
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04 novembre 2012

Top 20 Hyper-V Performance Metrics

Hyper-V Performance Metrics that you might want to know more about. So you want to take Hyper-V for a spin? Good idea, but wait, there is quite a lot of metrics that lays around. If you have mostly managed vSphere clusters in the past, you might be tempted to test the new Hyper-V v3 and see how is the performance there. The Hyper-V environments, the capacity monitoring and performance analysis remains complex. In fact there is over 100+ performance monitor objects in the Windows Performance monitor application, the principal tool... [Lire la suite]
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