Moving block storage between datacenters: the Demo

Moving block storage between datacenters: the Demo

Probably the coolest feature of the new Fargo release is the GeoScale capability, spreading data across multiple datacenters. With this feature Open vStorage can offer distributed block storage across multiple locations. In the below demo, storage is spread across 3 datacenters in la douce France (Roubaix, Strasbourg and Gravelines). The demo also explains how the storage is spread across these datacenters and shows the live migration of a running VM and its storage between 2 datanceters. The whole migration process completes within a few seconds. The GeoScale functionality can be compared with solving…Read more …

Distributed Config Management

When you are managing large clusters, keeping the configuration of every system up to date can be quite a challenge: new nodes are joining the cluster, old nodes need to be replaced, vPools are created and removed, ... . In Eugene and earlier versions we relied on simple config files which were located on each node. It should not come as a surprise that in large clusters it proved to be a challenge to keep the config files in sync. Sometime a clusterwide config parameter was updated while one of the nodes was…Read more …

Fargo: the updated Open vStorage Architecture

With the Fargo release of Open vStorage we are focussing even more on the Open vStorage sweet spot: multi-petabyte, multi-datacenter storage clusters which offer super-fast block storage. In order to achieve this we had to significantly change the architecture for the Fargo release. Eugene, the version before Fargo, already had the Shared Memory Server (SHM) in its code base but its wasn’t activated by default. The Fargo release now primarily uses the SHM approach. To make even more use of it, we created the Open vStorage Edge. The Edge is a lightweight block…Read more …