Private clouds provide infrastructure as a service (IaaS) within an organization's own data center. They automate the provisioning of virtual machines (VMs) through self-service portals, reducing costs and deployment times compared to traditional VM provisioning. Private clouds integrate hypervisors, storage, networking and management tools to deliver cloud services internally while addressing security and compliance needs. They are often combined with public cloud services to provide a hybrid cloud environment for additional flexibility and capacity.

1. Private Clouds

2. Private Clouds
On-Premises
Service Provider
Users
A
A
A
Cloud Applications (SaaS)
Compute/Storage/Network
A
VM
VM
A
Private Cloud
A
VM
Compute/Storage/Network
A
A
A
VM
A
VM
VM
Cloud Platform
Compute/Storage/Network

3. Using Traditional Virtualization
 Key benefit: Lower costs through server consolidation
IT User
A
VM
A
VM
VM
VM
Hypervisors
Compute/Storage/Networking
3) Manually
create
resource
1) Request
resource (e.g., VM)
from
administrator
VM
Management Tool
VM
Admin
2) Verify that
request is
allowed

4. Using a Private Cloud
 Key benefit: Faster, simpler, cheaper deployment of VMs and
applications
2) Request resource
(e.g., VM) directly
from cloud
Self-Service
Portal
IT User
A
A
VM
VM
VM
VM
Cloud
Cloud
1) Create clouds with predefined services, users,
access rights, and quotas
Hypervisors
Compute/Storage/Networking
VM and Cloud
Management Tools
VM
Admin

5. Evaluating Private Clouds
Benefits
Risks
Faster deployment of VMs and applications,
because the process is automated
VM administrators find it hard to trust users
to deploy their own VMs and applications
Reduced administrative costs, because
more of the process is automated
VM administrators might resist having part
of their job automated
Fewer deployment errors, due to automated
deployment of standard services
Defining standard services can be
challenging, since users want different things
Easier cost management, with per-VM
chargeback or showback
Changing operational processes is hard
for risk-averse IT departments

6. Using a Private Cloud: Example Scenarios
 A dev/test group getting VMs on demand
 A central IT organization in a multi-division company providing VMs
and applications to business unit IT staff in their organization
 A CIO demonstrating innovation

7. Private Cloud or Public Cloud?
 Private clouds can make internal data centers more efficient
‒ They provide IaaS in your data center
‒ They’re the evolution of virtualization
 But public cloud platforms are the best choice for many new
applications
‒ Such as apps that require elastic capacity
 Organizations will likely use both
‒ It’s not an either/or decision

8. Combining Private and Public Clouds
 A service provider (e.g., a hoster) can provide a public IaaS cloud using
the same technology that an enterprise uses to create a private cloud
‒ The public and private cloud can be linked together in a hybrid cloud
‒ VMs can potentially be moved between the two
 Example scenarios:
‒ Quickly getting VMs with minimal commitment
‒ Offloading work to the public cloud when more resources are needed

9. Illustrating Private Cloud Technologies
Service Providers
(Public IaaS Cloud)
A
A
VM
VM
Self-Service
Portal
A
VM
VM
VM
Cloud
Management
Private Cloud
Private Cloud
Hypervisor
Compute/Storage/
Networking
Converged Infrastructure
Cloud
User
Cloud/VM
Admin
VM
Management

10. Private Cloud Examples
Supported
Hypervisors
Converged
Infrastructure
VM
Management
vCenter
Server
VMware
ESX/
ESXi
vBlock
Microsoft
Hyper-V,
ESX/ ESXi,
XenServer
MS Private
Cloud
Fast Track
HP
ESX/ESXi,
Hyper-V, …
CloudSystem
Matrix
OpenStack
KVM,
XEN, …
Abiquo
ESX/ESXi,
Hyper-V,
Xen, …
Cloud
Management
Self-Service
Portal
vCloud
Director
Virtual Machine
Manager
Cloud Service
Automation
OpenStack
Compute
Abiquo Enterprise
Edition
AppController,
Service
Manager
Service
Providers
vCloud Express,
vCloud
Datacenter
MS Private Cloud
Service Provider
Program
CloudSystem
Service Provider
OpenStack
Compute
Abiquo Partner
Program

11. The Impact of Private Clouds
 Private clouds aren’t a substitute for public clouds
‒ The two address different problems
 For many organizations, adopting private clouds is easier than
adopting public clouds
‒ The risks are easier to bear
 Enterprises are likely to adopt private clouds rapidly

12. Conclusions
 Cloud computing is here
 All three aspects are important:
‒ Cloud applications
‒ Cloud platforms
‒ Private clouds
 A new world is unfolding
‒ Prepare to be part of it