Okeanos – GRNET’s cloud service, for the Greek Research and Academic Community
GRNET has developed its own IaaS cloud solution which is providing virtualized computing resources for free to the Greek Universities and public Research Centres that already utilize GRNET’s network infrastructure and services. The cloud service called ~okeanos is operated using an in-house developed software stack called Synnefo. The software builds on top of existing proven open source software (e.g. Google Ganeti), enhanced and expanded in order to provide a robust and complete IaaS cloud solution. ~okeanos is currently used on daily basis by thousands of users, university students, researches and members of the academia.
GRNET operates ~okeanos via the company-owned data center which currently comprises 22 racks, 400+ servers and 4 Petabytes of storage. The servers were ~okeanos is hosted have the following characteristics:
- CPU: dual AMD Opteron 6172, 2100MHz, 12cores
- Memory: 192GB (24x8GB)
- Disk: 8x600GB SAS
- Network: 4x1G + IPMI (iLO)
- Size: 2RU
This infrastructure is currently being extended with additional hardware and different architectural configurations (SSDs, GPUs etc), in order to satisfy the increasing and diversifying demand for computing resources. Technical details are given in the table below.
Administrative data
| System Name | Okeanos |
| Short Description | GRNET’s cloud service, for the Greek Research and Academic Community |
| Owner | GRNET S.A. |
| Country | Greece |
Dedication to VI-SEEM
| Dedication % of max VMs | 2% |
| Dedication storage % | 2% |
| Dedication in VM hours | 1,752,000 |
| Dedication storage in TB | 100 |
Integration
| Cloud system operational since | 2010 |
| Expected date system to be available to the project | PM01 |
| Expected date to be phased | - |
| Interface to be provided | Okeanos |
Computational Power
| Number of servers | 400 | Server specification | HP DL385G7 | CPU per server | 2 |
| RAM per server | 192 | Total number of CPU cores | 5520 | Max number of VMs | 10,000 |
| Smallest VM CPU cores | 1 | Smallest VM RAM | 1 | Largest VM CPU cores | 8 |
| Largest VM RAM | 8 | Total storage | 300 TB | Cloud environment type | synnefo.org |
| Interfaces | Standart Openstack | User access | Academic Login, Classic Accounts (API Based, Web UI) | ||