摘要:
In a RAID storage system, a parity value is generated. The storage system includes a RAID adapter, a plurality of disk array processors managing corresponding sets of RAID storage drives, and a connecting fabric. The RAID adapter initiates a parity generation operation, parallel instructions are dispatched for the array processors to each generate a partial parity value from data blocks on drives on respective managed RAID storage drives, the partial parity value is received in the RAID adapter from each array processor, and the partial parity values are combined in the RAID adapter to generate a complete parity value. The parity value may be an actual parity block to be stored on a hard disk drive or may be a reconstructed data block in the event of a failed drive.
摘要:
An apparatus, system, and method are disclosed for integrating an enclosure. An initialization module initializes a second enclosure. A discovery module discovers a connection of the second enclosure to a first enclosure. An address module creates a valid address for the second enclosure. An assignment module assigns the address to the second enclosure. A power control module cycles power to the second enclosure to reinitialize the second enclosure and set the address.
摘要:
A data processing unit including a first active cooling device configured to respond to a first control signal and a second active cooling device configured to respond to a second control signal. The control signals may be any type of control signal suitable to control the operation of the first and second active cooling devices. The data processing unit also includes a first control function selectively capable of providing the first control signal and/or the second control signal, and a second control function selectively capable of providing the first control signal and/or the second control signal. Logic associated with the first and second control functions is included to determine which of the control functions will provide which control signal at a specific time. Logic and/or switching or isolation apparatus is also included to prevent both the first and second control functions from attempting to provide one of the control signals simultaneously.
摘要:
An apparatus to detect a fiber channel miscabling event includes a module configured to identify a connection made between first and second unlike devices in a fiber channel topology. If an unlike connection identified to have been made the module enables an upstream port of the second device, leaving a downstream port of the second device disabled. A method to detect a fiber channel miscabling event includes detecting a fiber channel cable connection configuration, determining whether a connection is made between first and second unlike fiber channel units, and enabling an upstream port of the second fiber channel unit while keeping a downstream port of the second fiber channel unit disabled if an unlike connection is determined to have been made.
摘要:
A method is disclosed to configure one or more storage arrays. The method supplies a data storage and retrieval system comprising (N) data storage device assemblies, wherein each of said (N) data storage device assemblies comprises (M) data storage devices, wherein (N) is greater than or equal to 2, and wherein (M) is greater than or equal to 2. The method configures a first storage array to comprise the (i)th data storage device disposed in two or more of said (N) data storage device assemblies, wherein (i) is greater than or equal to 1 and less than or equal to (M).
摘要:
A multiple-master Inter Integrated Circuit (“I2C) bus system includes a first master device including a first processing device within a first power boundary and a second master device including a second processing device within a second power boundary connected through a single I2C bus to one or more slave devices. The second master device utilizes a software algorithm or hardware component to detect or manage power up of the first power boundary. Additionally, the second master device includes a bus control algorithm that allows it, once initiated, to communicate with the connected slave device, to direct the first power boundary to activate or detect that the first power boundary has powered up, and to release the I2C bus. Once the first processor has initialized, the first master device acquires control of the I2C bus without arbitration or interference with the second master device.
摘要:
Systems, methods and a computer program product are provided to permit the identification of all of the devices of a specified domain in a multi-domain environment. All communication among the domain devices is in-band having the advantage that no additional cabling is required. A control center between host devices and the domains receives an in-band command from an initiating device in a specified domain, the command being transmitted in response to the activation of a triggering device on the initiating device. Upon receipt of the command, the control center broadcasts an in-band command to each of the other devices in the domain directing the other devices to activate an indicator on each of the other devices. With the indicators on the devices in the specified domain activated, an administrator is able to identify those devices and thus focus his search for the faulty device only on those devices within the domain.
摘要:
An apparatus, system, and method are disclosed for limiting failures in redundant signals. A coordination module generates a power status signal for each of a plurality of power modules. An input module receives a source signal. A signal generation module generates a plurality of output signals from the source signal and at least one power status signal. The output signals are not asserted if at least one power supply is operational. If a device of the signal generation module malfunctions, no more than one output signal is erroneously asserted.
摘要:
A method is disclosed to set the speed of a network. The method supplies a network interconnected with a system controller and a plurality of switch domains, where each of those plurality of switch domains comprises one or more information storage devices and a switch domain controller, and sets by each of the plurality of switch domains a signaling rate for that switch domain. The method queries in-band by the system controller each of the plurality of switch domains for that switch domain's signaling rate, and provides in-band by each of the plurality of switch domains the signaling rate for that switch domain. The method provides in-band by the system controller to each of the plurality of switch domains a first speed selection command specifying a first network speed, and resets by each of the plurality of switch domains the signaling rate for that switch domain to the first network speed.
摘要:
The method forms a plurality of DMA data payloads each comprising a plurality of first sectors, and sends to a sector format conversion device one or more of those DMA data payloads. The method then overlays the (i)th DMA data payload onto part or all of a plurality of second sectors to form the (i)th converted DMA data payload, enqueues that (i)th converted DMA data payload in a data queue, transmits that (i)th converted DMA data payload to a data storage device, and writes the (i)th converted DMA data payload to an information storage medium.