This is due to the fact that Backup Exec cannot read the content of the data stream sent by these systems and therefore cannot split it into chunks. Please note that files deriving from NDMP filers like NetApp, EMC etc. Thereby it is completely irrelevant, whether that data packet is part of an office document, a file from an operating system or a video clip.ĭeduplication data by splitting files into chunks yields to better results than doing it at the file level. If the backup server receives a data packet who’s hash value already exists in the database, the packet is discarded and only a pointer o the existing chunk is created in the database. The backup server receives the data stream, splits it into 512kB chunks and calculates a unique hash value for each chunk that is stored in a dedicated database. This implies that the source server sends all files to the backup server, as if it was a regular backup job. Server-side deduplication means, that all deduplication work is done at the backup server. The Deduplication Option within Backup Exec supports three different methods of deduplication: Server-Side Deduplication 64 terabyte per deduplication storage and one deduplication storage per backup server.
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