1. Resource Shares Dynamic resource management
Only used if there is resource contention
Prevents a single VM from utilizing all the resources
Prioritizes specific VM resource usage during contention
1000 Shares – 25%
Number of Shares Equal (each has 25%)
2000 Shares – 22%
1000 Shares – 11%
4000 Shares – 45%
Changing Share Values (% varies on # of shares)
11-8
Starting a VM changes resource allocation
2000 Shares – 20%
1000 Shares – 10%
4000 Shares – 40%
Turning off VM changes resource allocation
2000 Shares – 22%
1000 Shares – 11%
4000 Shares – 45%
1000 Shares Turned off 1
Topic 1: Configuring Resource Pools

2. Expandable Reservations
Allow use of available parent resources when a Resource Pool’s Reservation for a resource has been reached
Maximum of up to 12 levels of resource pools allowed
Events that trigger Expandable Reservation use:
Power on VM
Create child resource pool
Change resource pool reservation
What is necessary to start VM2-1 below?
11-10 2
Topic 1: Configuring Resource Pools

3. Virtual Disk and Config files
How VMotion Works 1
Step One: 1
VM1-1
Users currently accessing VM1-1 on ESX1
Initiate migration of VM1-1 from ESX1 to ESX2 while VM1-1 is up and running 4
ESX Server 1
ESX Server 1 5
Step Two:
Pre-copy memory from ESX1 to ESX2
Log ongoing memory changes into a memory bitmap on ESX1 2 3
11-18
Shared Storage
Virtual Disk and Config files 2
Memory
Quiesce virtual machine on ESX1
Copy memory bitmap to ESX2
Step Three:
VM Motion Network
CorpNet Network
Memory Bitmap
Memory Bitmap
Fetch Pages/Copy Pages 5
Step Four:
Start VM1-1 on ESX2
Users now access VM1-1 on ESX2 6
Step Five:
Copy VM’s remaining memory (as listed in memory bitmap) from ESX1
Fetch pages from source VM when applications attempt to read/write modified memory in VM1-1 on ESX2
ESX Server 2 4
Step Six:
Delete VM1-1 from ESX1 after migration is successful
VM1-1 5
Topic 2: Configuring VMotion

4. Update Manager Downloads
Schedule the download of patches
Repository Location
Set during Install
C:\Documents and Settings\All Users\Application Data\VMware\VMware Update Manager\Data (Default)
Configured After Install
Modify <patchStore> tag in C:\Program Files\VMware\Infrastructure\Update Manager\vci-integrity.xml file
11-73 2
Topic 6: Update Manager

5. Remediation ESX Hosts use the Hosts and Clusters View
VMs use the Virtual Machines and Templates View
11-74 4
Topic 6: Update Manager

6. Chapter 11 Review Questions
1. Which technology moves running virtual machines from one VMware ESX 3.5 host to another?
A. HA C. Cold Migration
B. VMotion D. Update Manager
2. In VMware ESX 3.5, what defines the guaranteed minimum RAM for a virtual machine?
A. Expandable Reservation C. Limit
B. Reservation D. Shares
3. In VMware vCenter 2.5, which of the following Fully Automated settings for DRS will provide the least amount of effort on the part of the vCenter Administrator?
A. Moderately Conservative D. Moderately Aggressive
B. Aggressive E. Midpoint
C. Most Conservative

7. Chapter 11 Review Questions
4. The only VMware supported method of using Storage VMotion is from the Remote Command Line Interface (RCLI).
True False
5. Storage VMotion in VMware ESX 3.5 requires that the virtual machine is powered off.