Free twisted storage software for linux

Twisted Storage is an application that will take your data and manage it for you, just like a file system. But Twisted Storage goes way beyond what a normal file system does.
What types of "objects" are stored in Twisted Storage : just regular files. The data stored in the system is expected to be fixed content, meaning it doesnt change at all. If you read the data back, change it, and store it, it is considered a different file. There are plenty of examples of fixed content data : emails you received, movies or mp3 files you made or own, documents you wrote, etc. In fact it is estimated that 80% of the data you have on your computer is fixed, reference data.
Your Twisted Storage system can start out small - a single computer with a few disk drives. When you need more storage you can add more disk drives and more computers. But it has been designed to store petabytes worth of data without requiring any special hardware. For example storing a petabyte worth of data, using the biggest disk drives available today (500 GB), would require 2000 disk drives. To overcome the need of special hardware, Twisted Storage is a scalable, distributed system using ordinary commodity computers. Even so that petabyte of data would require 500 computers networked together and that requires special handling.
Twisted Storage has a few features you wont find in any file system. For example once a file is added to the Twisted Storage repository it can be written in multiple locations simultaneously. The system has been designed to be compliant with Sarbanes-Oxley Act: when an object is added to the repository you can no longer delete it and the integrity of the contents are guaranteed. In addition any access to the object is recorded.
Main features:
Scalable to thousands of servers and multiple petabytes of data.
- Regardless of how much data you want to store,Twisted Storage is designed to handle it. The system can grow from one computer and a few disks to hundreds of systems and thousands of disk drivers.
Automatic data recovery without human intervention.
- Twisted Storage doesnt require backup/restore software or procedures. All data written to the system is recorded in multiple locations.
No special disaster recover procedures.
- So long as you have your systems in physically different locations and you have instructed the software to write the multiple copies to those systems, you have no-hassle disaster recover. If one of the sites goes down, the system will retrieve any data from the other systems. Additionally, once the disaster site is up and running, the system will automatically restore the data to the it.
Simplified configuration.
- To ease management of the system, you can change any one systems configuration and have it ripple through out the system.

Twisted Words library provides implementations of a handful of IM protocols, including IRC, MSNP8, OSCAR, TOC, and Jabber.

Twisted Words provides two separate high-level end-user features:

a multiprotocol instant messaging server
a multiprotocol instant messaging client

These are both still in the early stages of development and are not expected to work flawlessly in all configurations, however each is quite usable for a limited set of functionality. A Twisted Words server can be created with just a couple commands:

$ mktap words --irc-port 6667 --pb-port 8787 --passwd password_file --group somegroup
$ twistd -f words.tap

The Twisted Words client is named im and is usable as an IRC client, and possibly an AIM client (depending on the phase of the moon).

Low Level Functionality:

Twisted Words also includes:

Low-level protocol implementations of OSCAR (AIM and ICQ), IRC, MSN, TOC (AIM).
Jabber libraries.

Prototypes of chat server and client frameworks built on top of the protocols.

Twisted is a framework, written in Python, for writing networked applications. Twisted includes implementations of a number of commonly used network services such as a web server, an IRC chat server, a mail server, a relational database interface and an object broker.
Developers can build applications using all of these services as well as custom services that they write themselves. Twisted also includes a user authentication system that controls access to services and provides services with user context information to implement their own security models.
Main features:
- Pluggable event loops allowing the developer to take advantage of platform-specific capabilities.
- Abstractions of protocols and transports.
- Through Twisted Spread, mechanisms for network encoding of data (in Python, Java, ELisp, and other languages), to a full-blown distributed object system.
Twisted is an integration point for network services that were previously unable to interoperate. Services within a Twisted server can communicate with each other and share information providing a very integrated programming environment that can re-use large amounts of infrastructure across multiple network mediums (such as chat, web, and mail).
As well as servers, Twisted supports several different kinds of clients and GUIs. This means that the client can re-use large portions of the servers code, improving test coverage and reliability while reducing code size.
Twisted is a collection of servers and clients, which can be used either by developers of new applications or directly.
Enhancements:
- This release includes many fixes for UDP and multicast stdio on Win32.
- Many bug fixes were made for Trial, and its support for a large number of previously deprecated APIs was dropped.
- Deferred Generators no longer leak their final result or exception.
- LoopingCall now supports functions which return Deferreds.
- A cooperative scheduler with pluggable policies has been added.
- Much of the API documentation has been improved and a new guide for developing producers and consumers has been added.
- This also includes new releases of Conch, Mail, Names, Words, and Web.

Twisted Packager II (TP2) is a package manager that aims to make live easy - for end users and also developers. In some respects it is similar to Autopackage - it does not intend to replace the "system packaging tool" but instead will sit alongside it to allow application developers an easy way to package software; and system administrators an easy way to install [or remove!] such software.
TP2 excels at handling generic software - and allows a "source" type package [such as itself!] to be installed across multiple architectures and operating systems using the same package.
TP2 is cross-platform; it is currently in use on Solaris, Linux and HP-UX. Soon the intention is validate it also for BSD and AIX.
TP2 is flexible. It supports dependency management, package verification, preview installation and removal, and audit logs all activity.
TP2 is powerful. It supports "namespaces" which allows the same packages to be installed into different areas on the same machine. Non-root users can be given areas which they can manage independently.
Enhancements:
- Initial public announcement, though the software has been in use in several environments for over 12 months.

Twisted Conch project is an SSHv2 implementation written in Python. SSH is a protocol designed to allow remote access to shells and commands, but it is generic enough to allow everything from TCP forwarding to generic filesystem access.
Since conch is written in Python, it interfaces well with other Python projects, such as Imagination. Conch also includes a implementations of the telnet and vt102 protocols, as well as support for rudamentary line editing behaviors.
A new implementation of Twisteds Manhole application is also included, featuring server-side input history and interactive syntax coloring.
Conch is available under the MIT Free Software licence.
Enhancements:
- The in-memory terminal emulators "expect" functionality now supports timeouts.
- The SSH server and client are now approximately five times faster for bulk-data transfers.

TwistedJava provides an implementation of the Perspective Broker protocol in Java.
TwistedJava is an LGPLed implementation of the Perspective Broker protocol for Java. PB is a remote object protocol, similar to RMI, supporting multiple programming languages.
Included is a policy (Straw) written by Brandon Wiley that lets you use remote Java objects transparently.
You can read the README for the latest version, or read the API javadocs.
Enhancements:
- Adds support for logging in to Twisted 1.1 PB servers.

cfgstoragemaker remotely generates an MRTG config file in order to graph all storage devices (disk, memory, and swap) of one or more specific host(s) via SNMP.

GlusterFS package contains clustered file storage that can scale to peta bytes. GlusterFS is a programmable system. With little thinking, you can even redesign the GlusterFS file system by re-arranging the GlusterFS components using translator interface. It is all achieved through volume specification file. This allows GlusterFS to be flexible for all kinds of storage needs. Even with all these advanced features, GlusterFS is very easy to setup and manage.

Gluster is a GNU cluster distribution aimed at commoditizing Supercomputing and Superstorage. Core of the Gluster provides a platform for developing clustering applications tailored for a specific tasks such as HPC Clustering, Storage Clustering, Enterprise Provisioning, Database Clustering etc.