March 23rd, 2010· Scalability:
· supporting hundreds of thousands of nodes and millions of users dynamically joining and leaving the Grid,
· Transparency:
· hiding the complexity of the Grid by distributed operating system services allowing to run new and legacy applications seamlessly,
· Interoperability:
· complying with all major standards such as POSIX and SAGA,
· Dependability:
· providing reliability and high availability through checkpointing and replication,
· Security:
· ensuring trust and integrity according to customizable policies.
November 3rd, 2008· minor bug fixes for 0.10.0
October 29th, 2008· Significantly increased client performance. The XtreemFS access layer now exhibits an acceptable performance when reading and writing file content and metadata.
· Added OSD checksums. Data can now be internally checksummed by an OSD. If a checksum does not match its expected value when scrubbing a file, an error is reported.
· Added scrubber and cleanup tools for system maintenance. The scrubber veri- fies checksums and tests whether file sizes in the MRC and OSD are consis- tent. The cleanup tool searches OSDs for orphaned objects, which can either be deleted or assigned to new files.
· Added support for service identification with UUIDs. Services are now iden- tified by means of UUIDs rather than URLs, which allows a migration of ser- vices between machines.
· First experimental distribution of a WIN32 client.
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