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EVC incompatible hardware

I have two DL385 G5 HP servers with quad core AMD processors. When I edit the settings for the cluster the servers show as “Incompatible Hardware” for EVC. This hardware should be compatible so I started some research.Then I found this on the internet. I just enabled the No-Execute Page-Protection on the advanced CPU settings and the hosts are no longer...

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Using esxtop to identify storage performance issues

The esxtop utility can be used to measure how much I/O is moving across various devices. The esxtop utility is interactive. As such, pressing certain keys changes the view. Configuring monitoring using esxtop To monitor storage performance per HBA: Start esxtop by typing esxtop at the command line. Press d to switch to disk view (HBA mode). Press f to modify the fields that are displayed. Press b, c, d, e, h, and j to toggle the fields...

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VirtualCenter Passthrough Authentication

Tired of login in into the Virtual Center Client?  Try this… A very useful, yet very undocumented feature of the Virtual Infrastructure Client is that it can be configured to automatically pass your Active Directory credentials without you typing them in. To use: create a shortcut to the Virtual Infrastructure Client, then right-click on it and edit the shortcut properties. You’ll need to pass the program two arguments when...

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Disk.UseLunReset and/or Disk.UseDeviceReset

Another setting often overlooked is Disk.UseLunReset and/or Disk.UseDeviceReset. ESX defaults to Disk.UseLunReset=1 and Disk.UseDeviceReset=1. This means that when a SCSI bus is reset all SCSI reservations are cleared, not for a specific LUN but for the complete device. This is useful when one uses local storage, but within a VMware environment most companies utilize a SAN and you don’t want to disrupt the entire SAN when it’s not...

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Interpreting esxtop Statistics

Table of Contents Section 1. Introduction Section 2. CPU Section 2.1 Worlds and Groups Section 2.2 Global Statistics Section 2.3 World Statistics Section 3. Memory Section 3.1 Machine Memory and Guest Physical Memory Section 3.2 Global Statistics Section 3.3 Group Statistics Section 4 Disk Section 4.1 Adapter, Device, VM screens Section 4.2 Disk Statistics Section 4.2.1 I/O Throughput Statistics Section 4.2.2 Latency Statistics Section...

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