  The Murchison Widefield Array (MWA) is a next-generation radio telescope,
generating visibility data products continuously at about 400 MB/s. Efficiently
managing and archiving this data is a challenge. The MWA Archive consists of
dataflows and storage sub-systems distributed across three tiers. At its core
is the open source software - the Next-Generation Archive System (NGAS) - that
was initially developed in ESO. However, to meet the MWA data challenge, we
have tailored and optimised NGAS to achieve high-throughput data ingestion,
efficient dataflow management, multi-tiered data storage and processing-aware
data staging.
