| Petabyte Storage Infrastructure Archival Storage |
Archival StorageThe Petabyte Storage Infrastructure Project includes multiple components, for data collection (motes), disk space for data processing (fast disk cache), and long term data storage (archival storage). This section is devoted to the latter aspect of the project.Year 1As we are approaching the end of year one, we are in the process of making our initial bulk purchase of Storage Bricks. The final model consists of 1TB of PATA disks in a low power, 1U form factor. The initial Archival Storage Network infrastructure is now in place. We have targeted three separate machine rooms allowing for a three-way mirroring of the data. All of the current equipment is 1000bT capable so that we can evaluate the differences between 100bT and 1000bT to the individual storage nodes. The Archival Software is less well developed at this point, although much brainstorming and some experimentation has been done to probe the design space. We have examined various redundancy and hardware replacement strategies. We plan on using erasure codes for redundancy and hot-spares plus swapping boxes after a second disk failure for hardware replacement.
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PSI Project
University of California, Berkeley questions & comments: jonah@cs.berkeley.edu |