Abstract:
The invention can provide for a power supply, and in particular a fieldbus power supply, comprising a plurality of power supply modules each arranged to output power on a plurality of channels; a current share controller arranged to share an output current requirement across the plurality of power supply modules and wherein; at least a second of the plurality of channels in each module is arranged to track the loading of the first of the plurality of channels in each respective module and so that a multichannel and multimodule power supply with reduced power handling requirements for each module can be provided.
Abstract:
Provided is a two-way RAID controlled storage device of a serial attached small computer system interface/serial advanced technology attachment (PCI-Express) type, which provides data storage/reading services through a PCI-Express interface. The RAID controller typically comprises multiple sets of RAID equipment coupled to one another via a hardware host connect, an adaptive host interface controller, a host connect controller, a two-way RAID controller, a disk connect controller, an adaptive disk mount controller, and a hardware disk connect. Coupled to the hardware disk connect are a set of DDR, SSD memory disk units. Further, each set of RAID equipment typically comprises a programmable host interface unit, a disk controller, a high speed host interface, a disk monitoring unit, a disk plug and play controllers, and a programmable disk mount.
Abstract:
A user device is provided. The device includes a main power supply, and an auxiliary power supply. The main power supply provides a main power. The auxiliary power supply cuts off the main power according to a power level of the main power supply and provides an auxiliary power upon Sudden Power-Off (SPO).
Abstract:
A mass storage system including main and auxiliary storage subsystems and a controller Main storage provides physical storage space and includes non-solid-state storage devices (“NSSDs”) NSSDs provide physical locations, and main storage includes physical storage locations provided by NSSDs Controller is coupled to main storage and may be configured for mapping logical addresses to physical locations, giving rise to a logical storage space The auxiliary subsystem includes a solid-state data retention device (“SSDRD”) capable of permanently storing data and provides a physical location, giving rise to auxiliary space Controller is coupled to the auxiliary subsystem and may override a mapping of logical addresses to physical locations, with a mapping of logical address to physical locations within the auxiliary space, overriding physical storage locations Controller is adapted for loading a snapshot of the data currently stored in the overridden physical storage locations.
Abstract:
An apparatus and method is disclosed for generating path length information for two (usually redundant) receive paths in a receiving device such as a server blade so that the proper amount of equalization and/or pre-emphasis may be applied to receiver and driver circuits in the server blade. In one embodiment, the path length information comprises a longer or shorter path determination, and may also include a estimation of the slot location. In another embodiment, the path length information comprises a representation of the length of two receive paths. The path length information generating circuit is connected to the two receive inputs of the receiving device though high impedance elements, and the path length information may be utilized by hardware or a processor to set the equalization or pre-emphasis in the receiver and/or driver.
Abstract:
A storage apparatus writes data to a storage drive or reads data from a storage drive in response to an I/O request sent from a server. The storage apparatus includes a plurality of AC-DC power supplies supplying the storage drive with drive power is provided with a plurality of power supply paths provided for the respective AC-DC power supplies. A plurality of gate units are provided to the respective power supply paths and configured to stop supplying drive power to the storage drive through the corresponding power supply path when detecting voltage abnormality in the drive power supplied from the AC-DC power supply to the storage drive. The power supply paths allow each of the storage drives belonging to a same RAID group to receive the supply of the drive power from the AC-DC power supplies through different power supply paths, respectively.
Abstract:
Memory units and computer systems are provided. The computer systems include a memory unit. The memory unit includes a stable storage unit, an unstable storage unit, and a controller. The unstable storage unit stores pending write operations for the stable storage unit. The controller is configured to determine the locations in the unstable storage that store the pending write information and to selectively write the pending write operations to the stable storage unit when power to the memory unit is interrupted.
Abstract:
An information processing device includes: a calculator that calculates the number of pages used for storing management information in a first storage medium; a storage processor that sets pages corresponding to the calculated number of pages as free pages and stores the management information in the set free pages to thereby store the management information in the first storage medium; and an update processor that performs a process of updating position management information that indicates a storage position of the management information in the first storage medium. The information processing device can quickly write out logs on a memory.
Abstract:
Certain embodiments described herein include a memory system having a volatile memory subsystem, a non-volatile memory subsystem, a controller coupled to the non-volatile memory subsystem, and a circuit coupled to the volatile memory subsystem, to the controller, and to a host system. In a first mode of operation, the circuit is operable to selectively isolate the controller from the volatile memory subsystem, and to selectively couple the volatile memory subsystem to the host system to allow data to be communicated between the volatile memory subsystem and the host system. In a second mode of operation, the circuit is operable to selectively couple the controller to the volatile memory subsystem to allow data to be communicated between the volatile memory subsystem and the nonvolatile memory subsystem using the controller, and the circuit is operable to selectively isolate the volatile memory subsystem from the host system.
Abstract:
Disclosed are various embodiments of power source redundancy in a power supply for a rack mounted computing device. The power supply includes a plurality of AC power converters configured to receive power from corresponding power sources. A first AC power converter provides DC power to a common DC bus of the power supply. A second AC power converter provides DC power to the common DC bus in response to a change in the voltage level provided by the first AC power converter.