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Boom boom data storage

With the enormous increase in data over the last few years, it is an intuitive corollary that the demand for storage solutions must have increased as well. We look at the dynamics of storage space in conjunction with Big Data and Hadoop wave.

The Storage context

To set a context for the storage solutions in Hadoop ecosystem, some of the unique characteristics are listed below.
If you set a replication factor of 3:
-          For each TB (TeraByte) of data, 3 TB of disk storage is required
-          For each block write, there will be 3 trips that the data needs to make across the network
Also,
-          Each data block passes through memory bus and RAM before being passed on to storage device and same process is repeated on each DataNode  in the ingest and  replication pipeline
-          The intermediate and final results of the MapReduce process also need to be stored along with the ingested data
Combined with the fact that:
-          Many organizations will use a combination of dedicated Data Centers and outsourced Cloud data storage models
-          There is increasing focus on regulatory compliance for data privacy and retention
Along with variants in technical architecture like:
-          Storing meta data of NameNode on redundant servers to provide custom High Availability (HA) solutions
-          Coupling up warehouse and NoSQL layer like Hive, HBase etc on top of HDFS
And, increasing innovative usage of Hadoop for use cases like:
-          Data archiving
-          Blob storage



Storage market forecast

It is not surprising that the demand for storage has been increasing and IDC predicts that storage market will grow by astounding 184% from 2012 to 2015. The research firm also predicts that file and object based storage will become mainstay in Big Data market. Combined with the emergence of in memory database like SAP HANA, we will also see common deployments of network based flash storage. In the same research report, it notes that 32.7 % of organizations are running open source Hadoop on their data analytics platform while 20.3 % organizations are running commercial Hadoop distributions.

Research the options

As the options grow, so do the queries and pitches. However, beneath the fine print, the following must be taken into account while determining Big Data storage architecture:

- scalable at cost effective prices

- maintains throughput and access speed with volume growth

- eliminate data migration need essentially infeasible with Petabyte data stores

- support automation for script driven data management rather than human driven tasks

- maintain data integrity and availability knowing that hardware failure can occur

- supports replication across WAN and clouds

While the days of proprietary lock-in are moving behind us, it is still advisable to review the options and architecture before committing to a storage buy-in. Storage sprawl and underutilized capacity may have been a common productivity issue but with hybrid and tiered storage architecture, organizations are countering the trend. As attractive the downward trend in per unit storage cost may seem, the volume spike may still cost the buck. For now, make the most of the booming storage options. 

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top image source: freedigitalphotos.net

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