The company is a reference in the data archiving space with more than 19,000 installations but suffers from the lack of scalability of the solution for large environments and data sets. At least, the team and its users recognized the need to offer an advanced iteration of Archive Manager able to scale and support large configurations.
QStar Global ArchiveSpace (GAS) is a new design providing a scalable model with a dynamic cluster able to support hundreds of tape drives, thousands of tapes, large data sets with tons of files and big ones and of course a large disk cache to sustain gigantic loads. The multi-node approach is based on a single namespace across nodes, from 3 to 64, with embedded failover in case of nodes failures. GAS brings also tape drive reservation to nodes to avoid conflict but doesn't need any tape partitioning. This solution relies on a mono-site and multi-node model and is ready to scale at a very interesting level. The team has already some ideas to support multi-site configurations. I also learnt during this session that QStar is clearly against RAIT, in other words files belong to only 1 tape and are not striped across drives at the same time. Organization across directories can be done with some of them targeting some drives while other use other drives as well, so some sort of parallelism can be achieved but again a file belongs to only 1 tape written by a single drive.
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