DreamHost’s DreamCompute is a cloud computing service that provides scalable compute resources for developers and entrepreneurs. DreamCompute is based on OpenStack and designed for scalability, resiliency, and security.
With DreamCompute you can select the amount of compute resources and storage resources needed and define your own virtual networks.
DreamCompute is powered by OpenStack which is a widely adopted, open source cloud computing platform. It is used by both public cloud hosting companies, like DreamHost, and for private internal clouds as well.
DreamCompute provides virtual servers through the use of the KVM hypervisor. Virtual machines (VMs) can be started by creating an Instance using the DreamCompute dashboard. Each instance is based on a Flavor. Flavors define the amount of resources allocated to the VM in terms of vCPUs, memory, and boot volume size. DreamCompute provides Flavors small enough for companies just starting out to large ones for companies with greater computing needs.
Networking services for DreamCompute are delivered through OpenStack’s Neutron service.
Storage in DreamCompute is implemented with Ceph. Ceph is a massively scalable, distributed, redundant storage technology that can be delivered using standard server hardware. OpenStack’s Cinder project integrates with Ceph for block storage using Ceph’s RADOS Block Device (RBD) software.
Ceph is software created by DreamHost founder Sage Weil and has been under development inside DreamHost for several years. Ceph has been open source since its inception, and in early 2012, a new company called Inktank was spun out of DreamHost to support and continue development of the technology. Inktank was then acquired by Red Hat in April 2014.
Ceph is also the foundation for DreamHost’s cloud storage service DreamObjects.
The DreamCompute dashboard is built with OpenStack’s Horizon project. The dashboard provides a user interface for interacting with DreamCompute’s three main services: Compute, Networking, and Storage. Functions such as launching an instance, creating storage volumes, and configuring a virtual network, as well as creating and managing snapshots of both a running instance and storage volumes, can all be done in the dashboard.
OpenStack, and therefore DreamCompute, has a whole host of APIs that can be used for system automation. More about OpenStack APIs can be found here: http://docs.openstack.org/api
How do I sign up?
What are the pricing plans?
A simple pricing plan: you only pay for what you use, with a maximum monthly expense. No more confusing invoices or bills, and no surprise at the end of the month. For example, if all you need is a lightspeed size machine (1 CPU, 1GB RAM) for 5 hours a month, you’ll pay 5 cents. If you use that for more than 25 days in a month, you’ll only pay a maximum of $6.
With any of our DreamCompute plans, you can easily create virtual machines, block devices and networks using the DreamCompute Dashboard, or via OpenStack APIs and command-line tools.
Where are the data centers located?
DreamHost cloud services are currently located in the United States, but accessible from anywhere globally. DreamCompute is located in our Ashburn, Virginia (US-East) data center, and DreamObjects is located in our Irvine, California (US-West) data center.
Will DreamCompute scale?
Yes. You can scale your apps both vertically and horizontally, by creating VMs with additional resources, or by spinning up additional VMs to handle similar or diverse infrastructure workloads (e.g. creating multiple load balancers, or separating web servers and databases). The unique networking features in DreamCompute enable developers and operations teams to design sophisticated n-tier architectures, with many VMs.
Can I scale my disk volume on a running instance?
You can scale your disk volumes that are in use if you use LVM (Logical Volume Manager). We recommend using LVM when mounting your disk volumes for this reason. LVM allows you to continually add more disk space without any service interruption. If you don’t use LVM you would need to mount another (larger) volume, then copy your data from the old to the new volume.
Can I scale my CPU or memory on a running instance?
If you wish to add more memory or vCPU capacity to an instance, you will need to start a new larger instance. First, take a snapshot of your current instance, then start a new larger instance based on that snapshot.
Is my data backed up?
DreamCompute block storage is based on Ceph which is highly scalable, redundant, and self-healing storage technology. Ceph is designed to deliver extreme durability of data, by creating and managing replicas of your data that are intelligently distributed across zones in our data centers. The system automatically detects potential corruption of data or potential failure or degradation of any storage node, and immediately creates new replicas from redundant data copies, delivering enterprise-grade durability. During the Beta period, we recommend that you take a regular snapshot of your disk volume as a back up, which can be stored locally.