Intelligent Redundancy for Your Disk Array SnapRAID combines the safety of RAID with the convenience of backups. Now with real-time health monitoring and automation via the new SnapRAID Daemon. What is SnapRAID? SnapRAID is a powerful backup and redundancy program designed for disk arrays. It stores parity information (a special type of mathematical backup) that allows you to fully recover your da
This directory contains several hash-map implementations, similar in API to SGI's hash_map class, but with different performance characteristics. sparse_hash_map uses very little space overhead, 1-2 bits per entry. dense_hash_map is very fast, particulary on lookup. (sparse_hash_set and dense_hash_set are the set versions of these routines.) On the other hand, these classes have requirements that
Ddrescue - Data recovery tool [ English | Español | Français | Italiano | Russkii ] [ Lzip | Lziprecover ] Introduction GNU ddrescue is a data recovery tool. It copies data from one file or block device (hard disc, cdrom, etc) to another, trying to rescue the good parts first in case of read errors. The ddrescue package also includes ddrescuelog, an auxiliary tool that manipulates ddrescue mapfile
git-annex allows managing large files with git, without storing the file contents in git. It can sync, backup, and archive your data, offline and online. Checksums and encryption keep your data safe and secure. Bring the power and distributed nature of git to bear on your large files with git-annex. git-annex is designed for git users who love the command line. For everyone else, the git-annex ass
TestDisk is OpenSource software and is licensed under the terms of the GNU General Public License (GPL v2+). TestDisk is powerful free data recovery software! It was primarily designed to help recover lost partitions and/or make non-booting disks bootable again when these symptoms are caused by faulty software: certain types of viruses or human error (such as accidentally deleting a Partition Tabl
BFQ is a proportional-share storage-I/O scheduler that also supports cgroups. Available in Linux since 4.12, BFQ features the following performance (benchmark results here), on any type of storage medium (embedded flash storage, HDDs, SATA or NVMe SSDs, ...) and on systems ranging from minimal embedded systems to high-end servers: Low latency for interactive tasks Under load, BFQ loads application
HyperDex HyperDex is a next generation key-value and document store with a wide array of features. HyperDex’s key features — namely its rich API, strong consistency, fault tolerance, support for MongoDB API, and ease of use — provide strong guarantees to applications that are not matched by other NoSQL systems. Rich API HyperDex provides one of the richest APIs in the NoSQL space. Its support for
BitMagic - C and C++ library implementing dynamic bitvectors and bit-set algorithms with several types of on-the-fly, adaptive compression. Designed for use in databases, search systems, data-mining algorithms, scientific projects. The core of the library is C++, but it provides C-compatibility wrappers and can be compiled without C++ runtime. Optimizations for Intel SSE2, SSE4.2 and AVX2.
Queue networks are systems in which single queues are connected by a routing network. In this image, servers are represented by circles, queues by a series of rectangles and the routing network by arrows. In the study of queue networks one typically tries to obtain the equilibrium distribution of the network, although in many applications the study of the transient state is fundamental. Queueing t
Overview Kyoto Cabinet is a library of routines for managing a database. The database is a simple data file containing records, each is a pair of a key and a value. Every key and value is serial bytes with variable length. Both binary data and character string can be used as a key and a value. Each key must be unique within a database. There is neither concept of data tables nor data types. Record
High Performance Distributed File System and Parallel Data Processing Engine Sector/Sphere supports distributed data storage, distribution, and processing over large clusters of commodity computers, either within a data center or across multiple data centers. Sector is a high performance, scalable, and secure distributed file system. Sphere is a high performance parallel data processing engine tha
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