Solved

Swapping VMs --> more memory assigned then recommended

Posted on 2008-10-16
2
732 Views
Last Modified: 2008-10-30
In ESX cluster with 3 host I have some WIndows 2003 Server Standard x64 machines with 16GB RAM.
 In VM Settings "Windows 2003 Server x64 Standard" is selected. The recommended max RAM size by VMware is 4GB according to the menu when creating the machine. I assigned 16GB to my machines, because the OS I installed supports up to 32GB. Now the VM are performing very slow, time to boot ist up to 10 minutes. The VMs are creating heavy CPU Load on the Host when booting.

I changed the OS selection to "Windows 2003 Server x64 Enterprise". Now everything is fine.

What causes this behavior? Can it possibly be that ESX is only assigning the recommended RAM as physical RAM to the VM and the rest is swapped to the disk?
0
Comment
Question by:TRITEC-kuen
2 Comments
 
LVL 2

Author Comment

by:TRITEC-kuen
ID: 22765792
Nobody knows something on this?
0
 
LVL 4

Accepted Solution

by:
bmonroe44 earned 500 total points
ID: 22826348
Even though you selected a x64 base operating system that is capable of handling 32gb of memory there are specific limitations on the template guest selected. Anytime you are using more than 4gb of memory on any system (x86 or x64) be sure to always select the enterprise template as it is the most compatible with the larger amounts of memory. This is the same issue with XenServer and why they adjust RAM shadowing which increases performance on guest vm's that operate as terminal servers. Consequently, operating system types are strictly enforced in both environment.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Cisco Prime 2.2 7 68
VMWare fails to boot after update 15 66
cheap host service for my VMWare guest server 3 61
VM backup 1 50
Last article we focus in how to VMware: How to create and use VMs TAGs – Part 1 so before follow this article and perform the next tasks, you should read the first article how to create the TAG before using them in Veeam Backup Jobs.
In this article, I will show you HOW TO: Perform a Physical to Virtual (P2V) Conversion the easy way from a computer backup (image).
Teach the user how to delpoy the vCenter Server Appliance and how to configure its network settings Deploy OVF: Open VM console and configure networking:
This tutorial will walk an individual through the steps necessary to enable the VMware\Hyper-V licensed feature of Backup Exec 2012. In addition, how to add a VMware server and configure a backup job. The first step is to acquire the necessary licen…

726 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question