Methods and systems for implementing private allocated networks in a virtual infrastructure are presented. One method operation creates virtual switches in one or more hosts in the virtual infrastructure. Each port in the virtual switches is associated with a private allocated network (PAN) from a group of possible PANs. In one embodiment, one or more PANs share the same physical media for data transmission. The intranet traffic within each PAN is not visible to nodes that are not connected to the each PAN. In another operation, the method defines addressing mode tables for the intranet traffic within each PAN. The entries in the addressing mode tables define addressing functions for routing the intranet traffic between the virtual switches, and different types of addressing functions are supported by the virtual switches.

Private Allocated Networks Over Shared Communications Infrastructure

A data transfer control device includes an OUT-transfer transmitter circuit which transmits OUT data by driving a serial signal line, a clock-transfer transmitter circuit which transmits a clock signal CLK by driving a serial signal line, a PLL circuit which generates the clock signal CLK, and a power-down setting circuit which sets a power-down mode. In a first power-down mode, the OUT-transfer transmitter circuit is set to the power-down mode, and the clock-transfer transmitter circuit is set to the power-down mode to stop a system clock signal of a target-side data transfer control device. In a second power-down mode, the OUT-transfer transmitter circuit is set to the power-down mode without setting the clock-transfer transmitter circuit to the power-down mode.

Data transfer control device and electronic instrument

Methods, systems, and computer programs for creating virtual machines (VM) and associated networks in a virtual infrastructure are presented. The method defines virtual network templates in a database, where each virtual network template includes network specifications. A configuration of a virtual system is created, which includes VMs, virtual lab networks associated with virtual network templates, and connections from the VMs to the virtual lab networks. Further, the configuration is deployed in the virtual infrastructure resulting in a deployed configuration. The deployment of the configuration includes instantiating in the virtual infrastructure the VMs of the configuration, instantiating in the virtual infrastructure the virtual lab networks, retrieving information from the database, and creating and executing programming instructions for the VMs. The database information includes the network specifications from the virtual network templates associated with the virtual lab networks, and network resources for the virtual lab networks from a pool of available network resources. The programming instructions are created for the particular Guest Operating System (GOS) running in each VM based on the GOS and on the retrieved database information. When executed in the corresponding VM GOS, the programming instructions configure the VMs network interfaces with the corresponding network specifications.

Automated network configuration of virtual machines in a virtual lab environment

According to one embodiment, a disk array control device manages a plurality of drives as a single logical drive. The disk array control device includes a first register configured to store a to-be-accessed drive number which is designated by a host, and a control module. The control module is configured to receive a command from the host, determine whether the received command is a predetermined command which is used for maintenance of each of the drives, and execute, in a case where the received command is the predetermined command, a pass-through process of sending the received command to the drive which is designated by the to-be-accessed drive number in the first register.

Disk array control device and storage device

Some embodiments provide a network system. The network system includes a first set of host machines for hosting virtual machines that connect to each other through a logical network. The first set of host machines includes managed forwarding elements for forwarding data between the host machines. The network system includes a second set of host machines for hosting virtualized containers that operate as gateways for forwarding data between the virtual machines and an external network. At least one of the virtualized containers peers with at least one physical router in the external network in order to advertise addresses of the virtual machines to the physical router.

Route advertisement by managed gateways

A disk array controller apparatus (10) is disclosed having at least two logical ports (Logical Port #0-Logical Port #3) for interfacing with a host (12) and having one or more physical ports (Physical Port #0 - Physical Port #4), each physical port arranged for attaching at least one disk drive to the controller, and the controller including a switch (26), said switch providing dynamically configurable data paths (30) between the logical data ports and physical data ports, responsive to the contents of a Mapping Register (24). The Mapping Register defines a desired array disk drive array by specifying an association of each logical port to one of the physical ports. The mapping register can be organized as a logical mapping register, comprising a field for each logical port of the controller, and includes provision for designating a redundant array for RAID operations.

Disk array controller with reconfigurable data path

A RAID storage device controller (70) provides a host interface (56) for interfacing the controller to a host system bus. The host interface is isolated from the attached storage devices, for example IDE disk drives, so that the actual attached drives are not limited in number or interface protocol. Various device ports can be implemented, and various RAID strategies, e.g. level 3 and level 5, can be used. In all the cases, the host interface provides a standard, uniform interface to the host, namely an ATA interface (82, 84 and 86), and preferably a dual channel ATA interface. The host interface emulates the ATA single or dual channel interface and emulates one or two attached IDE devices per channel, regardless of the actual number of devices physically connected to the controller. Thus, for example, five or seven IDE drives can be deployed in RAID level 5 protocol without changing the standard BIOS in a PCI host machine. Thus the RAID controller is transparent relative to a standard dual channel ATA controller board.

Raid controller system and method with ATA emulation host interface

A disk array controller apparatus (10) is disclosed having at least two logical ports (Logical Port #0-Logical Port #3) for interfacing with a host (12) and having one or more physical ports (Physical Port #0-Physical Port #4), each physical port arranged for attaching at least one disk drive to the controller, and the controller including a switch (26), said switch providing dynamically configurable data paths (30) between the logical data ports and physical data ports, responsive to the contents of a Mapping Register (24). The Mapping Register defines a desired array disk drive array by specifying an association of each logical port to one of the physical ports. The mapping register can be organized as a logical mapping register, comprising a field for each logical port of the controller, and includes provision for designating a redundant array for RAID operations.

Disk array controller and fast method of executing stripped-data operations in disk array controller

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Disk array controller with reconfigurable data path

Raid controller system and method with ATA emulation host interface

Disk array controller and fast method of executing stripped-data operations in disk array controller