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Big Data - Coggle Diagram
Big Data
Physical Storage
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External
Flash memory card, USB flash drive, CD's, DVD's, USB external hard drive.
Optical storage
Advantages
They are reliable. Fairly durable (but vulnerable to dust and scratches). Good portability, they are easy to pack and transport.
Disadvantages
Per unit, have a smaller capacity than alternatives. When buying in bulk the price may be quite attractive but data is likely to be split across disks (inconvenient).
Magnetic storage
-
Disadvantages
Generally not portable. Generally not durable, disks can break easily. There are faster alternatives.
Solid state storage
Advantages
Generally reliable. Can be very durable. Can be very portable. Very fast read/write times to compared to alternatives.
Disadvantages
For the same cost, their storage capacity is much lower than magnetic. Finite writes (long term reliability problems). This is less of a problem with more modern solid state storage.
Cloud Storage
Advantages
Large providers are reliable
and stable. Files can be accessed from
anywhere (convenient). Backup copies of data and version control may be available.
Disadvantages
Internet connection is needed. For small users the cost may be high and is not usually a one - off payment. For example most cloud storage providers offer monthly subscriptions. No control over security or the location of the servers.
Big data
Benefits
Analysis can reveal trends and patterns. This is called data mining. Similar data sets can interact to share data. As they are organized, searches can be performed to find specific data.
Drawbacks
As data sets grow, processing
time increases. Interactions between data sets can lead to data duplication. This would then require data cleaning.