Unified storage is the consolidation of various storage types into a single system. This typically means handling both file-level storage solutions like network attached storage (NAS) and block-level solutions like storage area networks (SANs) within the same, centralized system.

• File-level storage—data is saved in a single file, with the appropriate file extension.
• Block-level storage—data is broken into smaller “blocks” for more granular access and reassembled as a single unit when needed.

This unification brings together the best of both worlds, offering the flexibility of file-level storage and the performance of block-level storage under one roof and providing the flexibility to choose the best method based on the application.

Unified Storage Protocols

A key feature of unified storage is that it is protocol agnostic. This means that the system isn’t tied to a particular data transfer protocol exclusively optimized for a single type of data. Instead, it’s made to support multiple protocols—for example:

• Network File System (NFS)
• Common Internet File System/Server Message Block (CIFS/SMB) 
• Internet Small Computer System Interface (iSCSI)
• Fibre Channel (FC)

This level of versatility lets unified storage systems be easily integrated with applications and platforms that use different types of data.

Components of Unified Storage

A unified system consists of multiple components, including hardware, software, and networking infrastructure.

Physical Hardware

At the heart of any unified storage system is the physical hardware used to host the data. This includes storage devices like hard disk drives (HDDs) or solid state drives (SSDs) organized into storage arrays, as well as controllers that manage and oversee the data flow between the storage devices and other components in the system.

Together, the hardware components of a unified storage system work to provide raw storage space that can then be optimized for the appropriate software layer.

Software Interface

The software interface is what enables unified storage systems to effectively combine multiple types of data compared to other storage solutions. It allows the storage unit to support different communication protocols as well as the management of data access required for large-scale operations.

Most interfaces are designed to be user-friendly, with a minimal learning curve even when aimed at professionals and corporate users.

Network Infrastructure

Network infrastructure plays a critical role in the setup of a unified storage solution. A robust infrastructure is needed to ensure that data can be transferred quickly and reliably between the storage system and applications that need the data.

This often involves dedicated networking hardware and high-speed connections to support the high data volumes typically seen in unified storage environments.

Features of Unified Storage

Unified storage solutions are gaining in popularity among businesses and organizations because of their features. Here’s a look at some of the most popular.

Scalability

As an organization’s data needs grow, unified storage can be easily expanded to meet them by adding more storage devices to the existing system’s infrastructure or, in some cases, by simply upgrading the system’s software to handle a higher data flow.

Protocol Support

Because it is protocol-agnostic, unified storage caters to diverse data access requirements, allowing for more flexibility in how the system is used. It can also be more easily connected to applications and platforms without having to dedicate a separate storage system for each.

Data Protection and Redundancy

Data protection and redundancy are essential for any storage system in order to ensure safety and integrity. Unified storage systems often include such features as the redundant arrays of independent disks (RAID) and replication to protect data from hardware failures. They also typically support snapshot and backup capabilities, ensuring data can be recovered in the event of accidental deletion or corruption.