User's Manual

Using Dell PRO Pack 23
Select the Load Balance algorithm if you want SCVMM to evenly distribute
virtual machines (VMs) across a pool of hosts.
Select the Resource Maximization algorithm if you prefer to saturate the
host completely before moving to a new one.
The placement requirements for identifying a healthy system and moving the
virtual machines are as follows:
• Hardware requirements are requirements that a machine hosting
the virtual machines must meet in order to run such as sufficient memory
and storage.
•
Software requirements are requirements that if met by the host, allows a
virtual machine to perform more optimally such as CPU allocation,
network bandwidth, network availability, disk IO bandwidth, and free
memory.
SCVMM assigns a star rating to hosts in a range of zero to five. If a hardware
requirement is not met, for example, not enough hard disk and memory
capacity, the host automatically gets zero stars and SCVMM does not allow
you to place a VM on that host.
The system health conditions that trigger migration of VMs are hardware
failure alerts on a virtualization host, such as virtual disk failure and predictive
drive error. Dell PRO Pack migrates VMs with the Running status. It does not
migrate VMs with status such as Stop, Pause, and Saved.
After you successfully implement the recovery task the following changes
take place:
•The status of PRO Tip changes to Resolved and the PRO Tip entry moves
out of the PRO Tip window.
• Corresponding alert disappears in the Operations Manager Alert View.
• An entry is displayed in the
Jobs section on the SCVMM console.
This entry shows the status of the job as
Completed , as shown in the
Figure 3-3.
book.book Page 23 Thursday, December 10, 2009 12:36 PM