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<h2>Types Overview</h2>
<a href="https://www.cloudastra.co/blogs/what-is-a-blockchain-rpc-node">Storage systems</a> fall into three broad categories:
<ol>
<li style="list-style-type: decimal;">Block storage</li>
<li style="list-style-type: decimal;">File storage</li>
<li style="list-style-type: decimal;">Object storage</li>
</ol>
<h2>Block Storage</h2>
Block storage, which originated in the 1960s, encompasses common storage devices such as hard disk drives (HDD) and solid-state drives (SSD) that are directly connected to servers. It presents the server with raw blocks, offering great flexibility and versatility. The server can utilize these raw blocks by formatting them as a file system or delegating control of the blocks to an application. Certain applications, like databases or virtual machine engines, interact directly with these blocks to maximize performance.
It&#8217;s worth noting that block storage is not limited to physical attachment. It can also be connected to servers through high-speed networks or industry-standard protocols like Fibre Channel (FC) and iSCSI. In the case of network-attached block storage, the concept remains the same as physically attached block storage; it presents raw blocks to the servers. However, regardless of whether it is network-attached or physically attached, block storage is exclusive to a single server and is not a shared resource.
<h2>File storage</h2>
File storage is an abstraction layer built upon block storage, offering a more convenient way to manage files and directories. It organizes data into files within a hierarchical directory structure. File storage serves as a widely-used, general-purpose storage solution. By employing common file-level network protocols like SMB/CIFS and NFS, file storage can be accessed by multiple servers. This eliminates the need for servers to handle the intricacies of block management and volume formatting. The simplicity of file storage makes it an ideal choice for sharing numerous files and folders within an organization.
<h2>Object storage</h2>
Object storage is a recent storage paradigm that prioritizes durability, scalability, and cost-efficiency over performance. It is specifically designed for &#8220;cold&#8221; data, often utilized for archival and backup purposes. In object storage, data is stored as individual objects within a flat structure, devoid of a hierarchical directory system. Access to data is typically facilitated through a RESTful API. While object storage excels in terms of durability and scale, it is comparatively slower than other storage types due to the deliberate tradeoff made to optimize other aspects of the storage solution.While object storage may not be suitable for every use case that demands high-speed data access, its unique characteristics make it an ideal choice for long-term data retention, backup and recovery, content distribution, and storing data sets for analytics or regulatory compliance. Most public cloud service providers have an object storage offering, such as AWS S3, Google block storage, and Azure blob storage.
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Storage types overview

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Storage types overview