| Apache HTTP Server |
A Web server software. See https://en.wikipedia.org/wiki/Apache_HTTP_Server. |
| CALM (cloud account lifecycle management) |
Our process for managing the allocation of cloud resources. |
| Ceph |
The distributed data storage platform for our clouds; includes volume storage. |
| CephFS (Ceph File System) |
A filesystem with Ceph storage, which allows data to be mounted simultaneously on multiple OpenStack instances. Currently only available with Arbutus. See https://docs.ceph.com/en/latest/cephfs/. |
| cloud |
When referring to our cloud services, short form of IaaS cloud. |
| compute cloud |
Type of resource allocated to support OpenStack instances intended to run for a limited time, usually with a very high sustained usage of CPU and memory. Flavours for these resources have labels beginning with c*. Currently only available on Arbutus, Béluga and Cedar. Compare with persistent cloud. |
| CVMFS (CernVM File System) |
A read-only content distribution system often used to manage software. |
| ephemeral local disk |
Virtual disk which is created and destroyed along with an OpenStack instance. An ephemeral disk is created when an instance is launched without the specification of a volume. |
| flavor |
OpenStack term for a predefined specification of a new instance. A flavor can define sizes for RAM, disk, number of cores, and so on. |
| floating IP |
Internet Protocol address that can be associated with an OpenStack instance to allow external access. |
| Horizon |
OpenStack cloud dashboard that is used for viewing and managing cloud resources through a Web browser. See https://docs.openstack.org/horizon/latest/. |
| host |
Physical server supporting virtual machines. |
| image |
Image of a virtual disk used to create a new boot volume or ephemeral disk when creating an OpenStack instance. |
| instance |
OpenStack virtual machines are called instances, mostly because they are instances of an image that is created upon request and that is configured when the instance is launched. |
| IPV6 (Internet Protocol version 6) |
A communications protocol successor to IPv4. See https://en.wikipedia.org/wiki/IPv6. |
| object storage |
Object storage (or object-based storage) is a storage type that manages data as objects, as opposed to other storage architectures like filesystems which manage data as a file hierarchy, and storage types where data is managed as blocks. Each object typically includes the data itself, a variable amount of metadata, and a globally unique identifier. Offered as S3 and Swift protocols. Allocated in TB. See https://en.wikipedia.org/wiki/Object_storage. Currently only available with Arbutus. |
| OpenStack |
The software suite used on our clouds to control hardware resources such as computers, storage and networking. |
| persistent cloud |
Allocation type for persistent virtual machines that are expected to run indefinitely and have low or bursty CPU requirements. Flavours for these resources have labels beginning with p*. Currently only available on Arbutus, Béluga and Cedar. Compare with compute cloud. |
| project |
In our infrastructure, a project represents an allocation of cloud resources to a group or user. Sometimes referred to as tenant. |
| RAC (Resource Allocation Competition) |
Our program via which PIs can submit a request for storage and computer resources beyond what can be obtained via the Rapid Access Service (RAS). The requests are evaluated by a committee of peers. |
| RAS (Rapid Access Service) |
Service by which Principal Investigators can request a modest amount of storage and cloud resources without having to apply to the RAC. |
| S3 (Simple Storage Service) |
A type of object storage. See https://en.wikipedia.org/wiki/Amazon_S3. |
| security group |
A set of security rules that control network traffic and can be applied as a whole to one or more instances. |
| service portal |
Our infrastructure hosts many Web research portals which serve datasets or tools to a broad research community. These portals generally do not require large computing or storage resources, but may require support efforts from our technical team. Groups applying for a service portal often use our clouds, generally require a public IP address, and may have more stringent up-time requirements than most research projects. |
| shared filesystem |
Persistent storage space offered as a Unix-compliant filesystem that can be mounted across multiple hosts in a project. This is useful for sharing data across multiple hosts. Our service runs on CephFS and requires either a Fuse driver (Windows/Linux) or the CephFS kernel driver (Linux) for access. Allocated in TB. |
| snapshot |
Copy of an OpenStack volume that can be used as a backup or to launch another instance. |
| SSL (Secure Sockets Layer) |
A protocol to allow encrypted communications over networks. SSL is obsolete and should be replaced by TLS (Transport Layer Security) wherever possible. |
| SWIFT |
A type of object storage. See https://wiki.openstack.org/wiki/Swift. |
| tenant |
See project. |
| TSL (Transport Layer Security) |
See SSL. |
| vCPU (virtual central processing unit) |
A vCPU represents a portion or share of the underlying, physical CPU that is assigned to a particular virtual machine. |
| vGPU (virtual graphics processing unit) |
A virtual machine can have one or more vGPUs assigned to it. Each of them is seen as a GPU by the operating system. Additional configuration may be required for use. |
| virtual machine |
Virtual server in the cloud infrastructure. In OpenStack, active virtual machines are called instances. |
| volume |
Storage resource that can be attached to or detached from an OpenStack instance, like a virtual disk. |
| volume storage |
Type of persistent cloud storage providing virtual disk functionality to OpenStack instances running in the cloud. Implemented with Ceph software. Allocated in GB. |