The document compares Apache CloudStack and OpenStack, highlighting their key features and usage. OpenStack, initiated by Rackspace and NASA, is widely adopted by large organizations and offers extensive support for various hypervisors along with enhanced networking capabilities. In contrast, CloudStack is noted for its simplicity, effective resource management, and is utilized by major telcos and service providers globally.

1. Apache CloudStack Vs OpenStack
Sumathi Kuppusamy,
Co-founder and Engineering Director,
ActOnMagic Technologies

2. CloudStack Vs OpenStack
Comparing two most popular and
successful cloud platforms

3. OpenStack
 Joint project of Rackspace and NASA in 2010.
 Managed by OpenStack Foundation, established in
September 2012.
 OpenStack summits happen every six months.
 Written in Python
 Django (web framework based UI)

4. Who's using it
 OpenStack is utilized by such organizations as AT&T,
CERN, Yahoo!, HP Public Cloud, Red Hat OpenShift
and several others.
 DataPipe deployed its global cloud infrastructure on CloudStack.
 CloudStack is also used by service providers in Europe and
Asia and some large telcos like Apple, British telecom, China
telecom etc

5. CloudStack
 Supports hypervisors like KVM, vSphere, XenServer, and now Hyper-V,
 Supports the Amazon AWS API model
 Paused VMs maintain machine state without compute charges
 Scale storage independent of compute
 Single security zone across all regions

6. OpenStack
 Hypervisor support: Open Stack provides support for Xen and KVM, with limited
support for VMware ESX, Citrix Xen server and Microsoft Hyper-V.
 Wide integration with storage and Compute technologies: Image types such as
OVF, VMDK,VDI,VHD, and Raw are managed via the OpenStack image service.
 Enhanced Networking Capabilities ( Neutron)
 Large Community Support - Backed by Dell, HP, IBM, RedHat etc

7. CloudStackSubsystem Handled By
Compute Cloud Management Service
Storage
Cloud Management Service
(Secondary Storage VM)
Network
Cloud Management Service
(Virtual Router/VPC)
Template
Cloud Management Service
(Secondary Storage VM)
Performance Metrics
Cloud Management Service
(Native support for PV Drivers installed XenServer VMs)
Usage Data Cloud Usage Service
Multi-App Deployment Not available.
Autoscaling Cloud Management Service
Billing Not available.
Compliance/Auditing Cloud Management Service - Limited
Capacity Planning Not available.
Post OS Configuration via Cloud-init Scripts

8. OpenStack
Subsystem Handled By
Compute Nova Compute Service
Storage
Swift Service : Object Storage
Cinder Service: Block Storage
Network Neutron Service
Template
Glance Service
Performance Metrics Ceilometer Service
Usage Data Ceilometer Service
Multi-App Deployment Heat Service
Autoscaling Heat Service
Billing Not available.
Compliance/Auditing Horizon Dashboard
Capacity Planning Not available.
Post OS Configuration via Cloud-init Scripts
Orchestration Heat Service
Governance Congress
Containers Magnum
Bare Metal Provisioning Ironic

9. Conclusion

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