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Dell PowerStore: MongoDB Solution Guide
Executive summary Introduction Considerations Preparing PowerStore appliance for MongoDB deployment MongoDB installation and configuration
Operating system tuning
Multipath I/O
File system
Space reclamation
MongoDB installation
MongoDB Replica Set configuration
WiredTiger storage engine
Data reduction study of PowerStore and MongoDB Test methodology and results Data protection References

WiredTiger storage engine

Home > Storage > PowerStore > Databases and Data Analytics > Dell PowerStore: MongoDB Solution Guide > WiredTiger storage engine

WiredTiger storage engine

  • The WiredTiger storage engine has been the default storage engine since MongoDB version 3.2. The MMAPv1 storage engine is obsolete and is no longer available in MongoDB. Among other features such as journaling, document-level concurrent model, checkpointing, WiredTiger also provides several compression algorithms to use with document collections, journals, and prefix compression for indexes. The benefit of using MongoDB compression is to save both memory and disk consumption on the database hosts.

    MongoDB provides four different compressor settings:

    • none – turn off compression
    • snappy – this is the default compression
    • zlib
    • zstd – new in version 4.2

    To change the compression algorithm, edit and set the storage.wiredTiger options in /etc/mongod.conf. If the options are not explicitly set, the snappy compression is used implicitly.

    storage:

      wiredTiger:

        engineConfig:

            journalCompressor: <snappy(default)|zlib|zstd|none>

        collectionConfig:

             blockCompressor: <snappy(default)|zlib|zstd|none>

        indexConfig:

             prefixCompression: <true(default)|false>