The Green Data Oasis (GDO) is a large data store (1.4 PB) on the unrestricted LLNL network. It is intended to facilitate the sharing of scientific data with external collaborators. The Livermore Computing program at LLNL manages it for the Multiprogrammatic and Institutional Computing (M&IC) Initiative and the Laboratory Science and Technology Office (LSTO).

GDO Hardware and System

GDO consists of a VM infrastructure and multiple Scalable Storage Units (SSUs). The front-end systems are Intel Xeon based running the TOSS 3 operating system. The ZFS file system is used for partitioning and managing the RAID storage. VMWare-based VM zones are used to create a virtual host for each project. This lets each project have its own IP addresses, run its own services, and do so in such a way as to not interfere with other projects. Fair share resource management is used to prevent one project from monopolizing resources to the exclusion of other projects. In summary:

GDO Front-End VM Servers (3) and ZFS Servers (2)

  • VMWare-based
  • 2 Socket with Intel Xeon E5-2667 v3 CPUs (8 cores/CPU, total 16 cores)
  • 256GB RAM
  • 2 x 10Gb Ethernet connections to ZFS Servers
  • TOSS 3 (RHEL-7 based)
  • ZFS
  • Each project has its own IP address, services, quotas

GDO Scalable Storage Units (4)

  • NetApp E-Series E5560 RAID Controllers
  • Each SSU has 120 4TB Drives
  • 16GB Fibre Channel Connections to Storage Nodes