Nowadays, service providers offer a lot of IT services in the public or private cloud. Clients can buy various kinds of services, such as SaaS, PaaS, etc. Recently, Backup as a Service (BaaS), a variety of SaaS, was introduced there. At the moment, there are several different BaaS’s available to archive data in the cloud, but they provide only a basic level of service quality. In this paper, we...

In this paper, we present the design and implementation details of WOWSnap, which is the data backup scheme based on the snapshot approach. As data to be stored in storage subsystems are tremendously increased, data protection techniques have become more important, to provide data availability and reliability. Snapshot is one of such data protection techniques and has been adapted to many file ...

SCSI RDMA Protocol (SRP) is used to build high performance Storage Area Networks (SANs) over InfiniBand, or SRP-based IB-SANs for short. The I/O read performance is critical for many read dominant applications, such as multimedia, remote sensing, data backup, etc. However, if I/O accesses focus on a specific storage device of an IB-SAN, the local I/O performance of single device could become th...

We propose a new approach exploiting the failure risk (node, link or Shared Risk Link Group) structures to enhance the backup path computation. Upon failure, our approach classifies the backup paths into two categories: operative backup paths and inoperative backup paths. An operative backup path is an active backup path which really receives traffic of some affected communications while an ino...

Data deduplication is an important technique for eliminating redundant data. Instead of taking no. of same files, it store only single copy of file. In most organizations, storage system contains many pieces of duplicate data. For example, the same file may be saved in several different places by different users. Deduplication eliminates these extra copies by saving just one copy of the data an...

High availability data storage systems are critical for many applications as research and business become more data driven. Since metadata management is essential to system availability, multiple metadata services are used to improve the availability of distributed storage systems. Past research has focused on the active/standby model, where each active service has at least one redundant idle b...

The trend towards self-organization of systems like peer-to-peer or mobile ad hoc networks generates increasing needs for distributed data management, in particular data backup and distributed storage functions that will themselves be self-organized and cooperative. Unfortunately, in such systems, the data stored are exposed to the selfishness (e.g. data discarded because of lack of resources) ...

In this paper, the main contributions of this work include three aspects. First, the deployment on different datacenters of Impala which is a database based on Ring Distributed Hash. This thesis deploys Impala system on different datacenters across WAN or across regions. Second, the research of data storage and search method based on circular distributed hash. This thesis adopts distributed has...

The depletion of fossil fuel sources has encouraged the authorities to use renewable resources such as wind energy generate electricity. A backup/storage system can improve performance turbines, due fluctuations in power demand. novelty this study is utilize a hybrid for farm, using excess electricity generated by turbines produce hydrogen an alkaline electrolyzer (AEL). storage tank stores pro...

Abstract A rapid transition in the energy infrastructure is crucial when irreversible damages are happening quickly next decade due to global climate change. It believed that a practical strategy for decarbonization would be 8 h of lithium‐ion battery (LIB) electrical storage paired with wind/solar generation, and using existing fossil fuels facilities as backup. To reach hundred terawatt‐hour ...