HP Matrix 7.2 KVM Private Cloud Getting Started Guide

3 Plan an expansion of the cloud
The Matrix KVM Private Cloud is a flexible solution that can expand to meet growing business
demands. There are two ways to expand Matrix KVM Private Cloud capacity:
1. Expand an existing cloud: this type of expansion involves adding VM hosts to an existing
cloud.
2. Create a new cloud: this type of expansion requires installing a new appliance in addition to
new VM hosts. Contact HP Support for assistance in creating a new cloud.
Each KVM Private Cloud appliance can support up to 32 VM hosts or a total of 1000 virtual
machines, whichever is less.
Expansion considerations
Your capacity planner can use the information in this section to determine the best managed-host
configuration for your KVM Private Cloud.
Resource considerations when expanding a KVM Private Cloud lists options and recommended
configurations for Matrix KVM Private Cloud to assist in planning an expansion of an existing
cloud. See also Calculating the number of VMs that can be provisioned to a host (page 20)
Whether adding one additional VM host or many, see Expand an existing cloud (page 23) for
instructions on configuring and activating a managed host and Deploy a virtual machine to the
cloud (page 26) for information on provisioning these new VM hosts into the KVM Private Cloud.
Table 9 Resource considerations when expanding a KVM Private Cloud
Configuration options and requirementsCloud component
Recommended server attributes vary depending on the projected cloud configuration.
For management server hosting the appliance
Server blades
• Small/single node: 8 CPU cores, 24–48 GB RAM, 200 GB Boot disk, 250 GB Appliance
Boot disk, 5 TB Glance disk
• Medium/two nodes: 8 CPU cores, 96 GB RAM, 200 GB Boot disk, 1 GB Quorum
(shared), 250 GB Appliance Boot disk (shared), 5 TB Glance disk (shared)
• Large/two nodes: 8 CPU cores running at 3 GHz, 96 GB RAM, 200 GB Boot disk, 1
GB Quorum (shared), 250 GB Appliance Boot disk (shared), 5 TB Glance disk (shared)
For KVM managed hosts
• Small: 2 server minimum and 32 server maximum, 16 CPU cores, 96 GB RAM, 200
GB Boot disk, 1 TB Datastore disk
• Medium: 4 server minimum and 32 server maximum, 16 CPU cores, 96 GB RAM, 200
GB Boot disk, 1 TB Datastore disk
• Large: 8 server minimum and 32 server maximum, 16 CPU cores, 96 GB RAM, 200
GB Boot disk, 1 TB Datastore disk
Recommended storage sizes:
For management server hosting the appliance
Storage
• Boot disk: 200 GB
• Appliance Boot disk: 250 GB
• OS image store (Glance) disk: 5 TB
• Quorum disk (for medium and large configurations): <10 GB
For each KVM managed host
• Boot disk: 200 GB
• VM instance store: 1 TB
Expansion considerations 19