Abstract: A system for optimizing a process of archiving at least one block of a virtual disk image includes a file system analysis component and an archiving component. The file system analysis component executes on a first physical computing device and identifies a plurality of blocks storing data comprising a file in a virtual disk image file. The archiving component executes on the first physical computing device, identifies a difference disk file storing an identification of a modification to the identified plurality of blocks storing data comprising the file, determines whether to archive the file, and transmits, to a second physical computing device, the plurality of blocks storing data comprising the file.

Abstract: A pipeline vent valve is disclosed having a housing that includes an upper portion defining an outlet and a lower end defining an inlet. A body disposed in the housing is movable between a first position and a second position. In the second position, the body affects the close of the outlet and the outlet is offset from a longitudinal axis of the body. A valve assembly is supported by an upper end of the housing and is movable between a closed position where the valve assembly is disposed in sealing engagement with the outlet and an open position where the valve assembly is out of sealing engagement with the outlet. The valve assembly is responsive to a level of fluid in the housing and includes an arm that is pivotally secured adjacent the outlet for movement in only one plane relative to the outlet.

Abstract: A heat exchanger includes an air channel configured to receive air from an equipment rack. A fluid circuit is provided having a bi-phase coolant flowing therethrough. The fluid circuit includes a coolant channel coupled to the equipment rack and positioned adjacent to the air channel. The bi-phase coolant is part liquid and part gas as the bi-phase coolant flows through the coolant channel. The bi-phase coolant is configured to condition the air flowing through the air channel.

Abstract: A heat exchanger includes an air channel configured to receive air from an equipment rack. A fluid circuit is provided having a bi-phase coolant flowing therethrough. The fluid circuit includes a coolant channel coupled to the equipment rack and positioned adjacent to the air channel. The bi-phase coolant is part liquid and part gas as the bi-phase coolant flows through the coolant channel. The bi-phase coolant is configured to condition the air flowing through the air channel.

Abstract: A heat exchanger includes an air channel configured to receive air from an equipment rack. A fluid circuit is provided having a bi-phase coolant flowing therethrough. The fluid circuit includes a coolant channel coupled to the equipment rack and positioned adjacent to the air channel. The bi-phase coolant is part liquid and part gas as the bi-phase coolant flows through the coolant channel. The bi-phase coolant is configured to condition the air flowing through the air channel.

Abstract: A method for moving an executing process from a source isolation scope to a target isolation scope includes the step of determining that the process is in a state suitable for moving. The association of the process changes from a source isolation scope to a target isolation scope. A rule loads in association with the target isolation scope.

Abstract: A heat exchanger includes an air channel configured to receive air from an equipment rack. A fluid circuit is provided having a bi-phase coolant flowing therethrough. The fluid circuit includes a coolant channel coupled to the equipment rack and positioned adjacent to the air channel. The bi-phase coolant is part liquid and part gas as the bi-phase coolant flows through the coolant channel. The bi-phase coolant is configured to condition the air flowing through the air channel.

Abstract: In a method for associating an application with an isolation environment, a location of a requested application is acquired. An association between the requested application and an application isolation environment is created. The association is stored.

Abstract: A method for moving an executing process from a source isolation scope to a target isolation scope includes the step of determining that the process is in a state suitable for moving. The association of the process changes from a source isolation scope to a target isolation scope. A rule loads in association with the target isolation scope.

Abstract: A method for virtualizing access to named system objects includes the step of receiving a request to access a system object from a process executing in the context of a user isolation scope, the request including a virtual name for the system object. A rule associated with the request is determined and a literal name for the system object is formed in response to the determined rule. A request to access the system object is issued to the operating system.

Abstract: A method for isolating access by application programs to native resources provided by an operating system redirects a request for a native resource made by an application program executing on behalf of a user to an isolation environment. The isolation environment includes a user isolation scope and an application isolation scope. An instance of the requested native resource is located in the user isolation scope corresponding to the user. The request for the native resource is fulfilled using the version of the resource located in the user isolation scope. If an instance of the requested native resource is not located in the user isolation scope, the request is redirected to an application isolation scope. The request for the native resource is fulfilled using the version of the resource located in the application isolation scope. If an instance of the requested native resource is not located in the application isolation scope, the request is redirected to a system scope.

Abstract: A method for presenting an aggregate view of native resources includes the step of enumerating a plurality of system-scoped native resources provided by a system scope. A plurality of application-scoped native resources provided by an application isolation scope are enumerated, some of which correspond to some of the plurality of system-scoped resources. For one of the plurality of system-scoped resources, the existence of a corresponding one of the plurality of application-scoped resources is determined and the corresponding one of the plurality of application-scoped resources is included in an aggregate view of native resources.

Abstract: A method and apparatus for virtualizing access to native resources includes a hooking mechanism, a name virtualization engine, and an operating system interface. A request to access a native resource from a process executing in the context of an isolation environment is received, the request including a virtual name for the native resource. A rule action of remap is associated with the virtual name included in the received request. A literal name for the native resource is formed, the literal name identifying a literal native resource of the same type as the requested resource. A request to access the native resource is issued, the request including the determined literal name for the native resource.