- Storage efficiency (SE) is the ability to store data and manage data that consumes the least amount of space with little t(less)or no impact on performance; thereby reducing overall operating costs. Efficiency addresses the real-world need to manage costs, reduce complexity and limit risk.
The Storage Networking Industry Association (SNIA) defines the storage efficiency in the SNIA dictionary as follows:
The efficiency of empty enterprise-class systems is typically in the range of 40-70%, depending on the combination of attacks, mirroring, and other data protection technologies deployed, and maybe lower for highly redundant remote mirroring systems.
When data is stored on the system, technologies such as deduplication and compression may store data at a ratio of data size to space consumption greater than 1 to 1, and with increased efficiency,
typically to over 100% for primary data, to thousands Percentage of 10,000 backup data.
2) technical field ..
Different technologies exist at different levels, sometimes multiple levels:
Snapshot technology, officially known as “incremental snapshot technology”, allows the same dataset to be used multiple times for a number of reasons, while only storing the changes between each dataset. Some storage vendors integrate snapshot functionality at the operating system and/or application level, allowing access to data that snapshots hold at the system and/or application management level. Currently, the terminology around snapshots and “clones” is confusing, and care must be taken when evaluating vendor claims. In particular, some vendors refer to full point-in-time copies as “snapshots” or “clones,” while others use the same term to refer to shared-block “incremental” snapshots or clones. Some implementations can only perform read-only snapshots, while others can also provide writable snapshots.
Deduplication technology can be used to track and deduplicate blocks of data within a storage unit very efficiently. There are many implementations, each with its own advantages and disadvantages.
Deduplication is most effective at the shared storage tier, however, software and even database implementations exist. The best candidates for deduplication are fallbacks and platform virtualization, as these two applications typically produce or use many nearly identical copies. However, some vendors now offer in-place deduplication, which deduplicates primary storage.
3) Main advantage
Using these techniques to aggressively improve storage efficiency (store data )has the following advantages:
Backup restore. Using snapshots, the time available for backup and restore ROs can be minimized. This greatly reduces costs and reduces downtime from hours to seconds. Snapshots can also lead to better RPO values.
Reduce floor space. When less storage space is required to store a given amount of data, fewer data center space is required.
Reduce energy consumption. When fewer spindles are required to store a given amount of data, less power is required.
Allocation efficiency. The writable incremental snapshot technology allows very fast provisioning of writable copies of data. This reduces latency in processes that require this data.
Examples are data mining, test data, etc.
The operating system and/or application-level also results in faster provisioning, as the system and/or application manager can manage its snapshots without having to wait for the storage manager and/or configurator.
4)major business players
All major vendors are implementing one or more of these technologies as storage efficiencies are becoming more popular.
Customers face exponentially increasing storage demands and a strong need to cut costs.
The main suppliers are
IBM, and HP .