A Blog of the ZHAW Zurich University of Applied Sciences
In a previous blog post, we showed how “bringing the code to the data” can highly improve computation performance through the active storage (also known as computational storage) concept. In our journey in investigating how to best make computation and storage ecosystems interact, in this blog post we analyze a somehow opposite approach of “bringing […]
What is active storage about? In most of the distributed storage systems, the data nodes are decoupled from compute nodes. Disaggregation of storage from the compute servers is motivated by an improved efficiency of storage utilization and a better and mutually independent scalability of computation and storage. While the above consideration is indisputable, several situations […]
In June we could participe to the 28th edition of EuCNC, an international conference sponsored by the IEEE Communications Society, the European Association for Signal Processing, and supported by the European Commission. EuCNC is one of the most prominent communications and networking conferences in Europe, which efficiently brings together cutting-edge research and world-renown industries and […]
This year we had the pleasure to organize and host one of Switzerland’s most prestigious cloud events, the OpenCloudDay. On the 30th of May, we welcomed the around 80 participants at the ZHAW School of Engineering in Winterthur for a day rich with technical talks, demos and networking possibilities for Cloud Computing practitioners and experts […]
On the 24th of May we attended the “Storage & Data Analytics – Swiss 2018” day which was organized at the Seedamm Plaza in Pfäffikon SZ. Our interest and expertise at the ICCLab for innovative solutions in the area of Cloud Storage motivated us to join the event with the aim to exchange expertise with […]
(Part 1/3 – Installation – Part 2/3 – troubleshooting) This part of the tutorial describes how to setup a simple Ceph client using librados (for C++). The only information that the client requires for the cephx authentication is Endpoint of the monitor node Keyring containing the pre-shared secret (we will use the admin keyring) Install librados APIs On Ubuntu, […]
(Part 1/3 – Installation – Part 3/3 – librados client) It is quite common that after the initial installation, the Ceph cluster reports health warnings. Before using the cluster for storage (e.g., allow clients to access it), a HEALTH_OK state should be reached: cluster-admin@ceph-mon0:~/ceph-cluster$ ceph health HEALTH_OK This part of the tutorial provides some troubleshooting hints that I […]
Ceph is one of the most interesting distributed storage systems available, with a very active development and a complete set of features that make it a valuable candidate for cloud storage services. This tutorial goes through the required steps (and some related troubleshooting), required to setup a Ceph cluster and access it with a simple client […]