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Simple blob storage

Simple blob storage (SBS) mode is a config option which can be enabled to use koala as a http rest interface to an archival storage backend. If IBM SP is already used for backup purposes this is especially useful for providing easy access to low cost bitstream preservation.

SBS can be thought of as an alternative to the full LTP implementation with SIP/DIP packages and metadata indexing if these features are not needed. For reference and examples see: API.

Running koala in SBS mode is more lightweight because only a subset of the default apps are required: purger, stats, retriever, web. BaseX is also not needed.

Data flow

Example: Client uploads pdf file via http to koala. koala uses SP libraries to save data into SP staging pool. SP asynchronously copies files to various tape pools according to its internally configured rules.