Performance problems can arise in any computing environment. In a virtualized computing environment performance problems can arise due to new and often subtle interactions occurring in the shared infrastructure. Uncovering the causes of those problems requires an understanding of the available performance metrics and their relationship to underlying configuration issues.
A new guide covering performance troubleshooting for VMware vSphere 4, including ESX 4.0 hosts, is now available. This document uses a guided approach to lead the reader through the observable manifestations of complex hardware/software interactions in order to identify specific performance problems. For each problem covered, it includes a discussion of the possible root-causes and solutions. Topics covered include performance problems arising from issues in the CPU, memory, storage, and network subsystems, as well as in the VM and ESX host configuration.
The document is available on the VMware Performance Community.
vSphere has a new feature called Fault Tolerance that allows for a VM to be running in vLockstep on two physical servers at the same time. In the event of a failure of the primary VM, the secondary VM will immediately take over with no downtime for the VM. There is a great whitepaper that covers FT architecture and performance. There have also been a couple of blog posts on VROOM! recently that cover FT performance as well. One uses VMmark to show how FT has excellent performance in a heavily loaded multi workload environment. The other blog post shows how an Exchange VM maintains excellent performance while supporting 2000 users with FT enabled.
FT currently requires that 1vCPU VMs be used. This presents a challenge for some applications that have traditionally been run in 2vCPU VM configurations. At the same time, new processors have features that provide much higher performance than in the past. When combined with the performance enhancements of ESX 4, it is now possible to get much better performance per core.
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This article provides steps which may be useful when upgrading to ESX 4.0 and vCenter 4.0.
Note: This article assumes that you have read the vSphere Upgrade Guide. This upgrade guide contains definitive information. If there is a discrepancy between the guide and this article, assume that the guide is correct.
Note: Read the VMware vSphere 4.0 Release Notes for known installation issues.
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Bij het configureren van VMware Data Recovery krijg kreeg ik bij het connecten naar de VDR Virtual Machine de volgende foutmelding: “Error: Connect:BeginSession: failed to authenticate Please make sure that the Data Recovery Appliance is turned on”
De VM draaide in hetzelfde subnet, geen nat of firewall aanstaan maar kon maar niet connecten.
vCenter + SQL database staat geinstalleerd op een Windows 2003 SP2 R2 64-Bit.
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Jaja, eindelijk is het dan zover, vanmiddag kwam UPS mijn nieuwe (tweedehandse) server afleveren. Dit pakket kost me denk ik 3 weken ziektewet (40 kilo) maar het resultaat mag er zijn:
HP ProLiant DL585 G1
CPU TYPE : Quad (4) AMD Opteron 64-880 Dual Core
CPU Speed: 8 x 2,4 Ghz
Geheugen : 8 GB DDR PC2100 (8 x 1GB)
Schijven: 2 x 72 GB 2 x 36 GB (15K)
2 x HP NC7170 Dual Port PCI-X Gigabit Adapter
Kon natuurlijk niet wachten met installeren..
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Helaas is het een tijdje stil geweest op VMpros.nl, heb mijn testomgeving (HP ML350 G3) verkocht in de hoop 1:1 een nieuwe testomgeving te kunnen kopen is helaas wat moeilijker geworden als dat ik dacht.
Gelukkig heb ik sinds vandaag een nieuwe server gekocht (HP Proliant DL585-G1 Quad AMD Opteron 64 (Dual Core) – 2,4Ghz/8192MB/210GB/DVD/Rails/4U Server) en hoop deze vanaf dinsdag volledig klaar te hebben.
* Update volgt!
p.s Enneh.. collega bloggers?? Blogconccurentie ga ik dus weer met alle liefde aan!
This article provides additional steps which may be useful when installing ESX 4.0 and vCenter 4.0.
Notes: This article assumes that you have read the ESX and vCenter Server Installation Guide. This guide contains definitive information. If there is a discrepancy between the guide and this article, assume that the guide is correct.
The following are best practice procedures when installing vCenter 4.0 and ESX Server 4.0:
Note: See the VMware vSphere 4.0 Release Notes for known installation issues.
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