Abstract: A lower level processor holds a link, in response to detecting a link down condition of the link. In response to the holding of the link, the lower level processor transmits a command to an upper level processor indicating the link down condition of the link. The lower level processor initiates a process of link recovery for the link, in response to receiving an authorization from the upper level processor.

Abstract: Information maintained in a port control block of an embedded port of a host bus adapter is stored in a host bus adapter memory, wherein the information corresponds to login attributes and state data of remote ports. In response to storing the information in the host bus adapter memory, code in the embedded port is updated. In response to the updating of the code in the embedded port, the stored information is restored from the host bus adapter memory to the port control block of the embedded port.

Abstract: Various embodiments provide computer program products for migrating data. One embodiment comprises an executable portion that receives, from a first processor, data that is unprotected; an executable portion that utilizes, by a second processor, a peer-to-peer remote copy (PPRC) application to add protection to the data to generate protected data; an executable portion that checks a CRC for the protected data when a request to migrate the protected data is received; and an executable portion that stores the protected data in the protected SCSI LUN.

Abstract: Provided are a computer program product, system, and method for interacting with a remote server over a network to determine whether to allow data exchange with a resource at the remote server. Detection is made of an attempt to exchange data with the remote resource over the network. At least one computer instruction is executed to perform at least one interaction with the server over the network to request requested server information for each of the at least one interaction. At least one instance of received server information is received. A determination is made whether the at least one instance of the received server information satisfies at least one security requirement. A determination is made of whether to prevent the exchanging of data with the remote resource based on whether the at least one instance of the received server information satisfies the at least one security requirement.

Abstract: Various embodiments for troubleshooting a network device in a computing storage environment by a processor. A determination is made if a parity error in a specific port is either an instruction cache parity error or a recoverable data cache type parity error. If the parity error is determined not to be the instruction cache parity error, and determined not to be the recoverable data cache type parity error, a full recovery operation is initiated.

Abstract: Provided are a computer program product, system, and method for interacting with a remote server over a network to determine whether to allow data exchange with a resource at the remote server. Detection is made of an attempt to exchange data with the remote resource over the network. At least one computer instruction is executed to perform at least one interaction with the server over the network to request requested server information for each of the at least one interaction. At least one instance of received server information is received. A determination is made whether the at least one instance of the received server information satisfies at least one security requirement. A determination is made of whether to prevent the exchanging of data with the remote resource based on whether the at least one instance of the received server information satisfies the at least one security requirement.

Abstract: Various embodiments for troubleshooting a network device in a computing storage environment by a processor. In response to an error in a specific port, an alternative error recovery operation is initiated on the port by performing at least one of initiating a silent recovery operation by reloading a failed instruction, taking the port offline, cleaning up any active transactions associated with the port, performing a hardware reset operation port, and bringing the port online.

Abstract: In one aspect of the present description, in an input/output (I/O) device having multiple CPUs and multiple I/O ports, a cycle of I/O port rotations is initiated in which each port rotation of the cycle includes rotating an assignment of at least one I/O port from one CPU to a different CPU of a plurality of the CPUs. In the illustrated embodiment, an I/O port assignment for each CPU of the plurality CPUs is rotated for at least a portion of the cycle. Other features and aspects may be realized, depending upon the particular application.

Abstract: In one aspect of the present description, in an input/output (I/O) device having multiple CPUs and multiple I/O ports, a cycle of I/O port rotations is initiated in which each port rotation of the cycle includes rotating an assignment of at least one I/O port from one CPU to a different CPU of a plurality of the CPUs. In the illustrated embodiment, an I/O port assignment for each CPU of the plurality CPUs is rotated for at least a portion of the cycle. Other features and aspects may be realized, depending upon the particular application.

Abstract: Grommets for supporting harnesses and systems and methods including the same are disclosed herein. The grommets include a grommet body, a resilient cushion, and a retention mechanism. The grommet body is configured to be received within an aperture that is defined by a structural component and defines a tubular receiving region that is sized to receive the harness. The resilient cushion is located within the tubular receiving region and is configured to extend between the harness and the grommet body. The retention mechanism is configured to selectively retain the grommet body within the aperture. The methods include locating the resilient cushion around an external surface of the harness, locating a first body portion and a second body portion around an external surface of the resilient cushion, and operatively interlocking the first body portion with the second body portion to form the grommet body.

Abstract: Various embodiments provide computer program products for migrating data. One embodiment comprises an executable portion that receives, from a first processor, data that is unprotected; an executable portion that utilizes, by a second processor, a peer-to-peer remote copy (PPRC) application to add protection to the data to generate protected data; an executable portion that checks a CRC for the protected data when a request to migrate the protected data is received; and an executable portion that stores the protected data in the protected SCSI LUN.

Abstract: Provided are a computer program product, system, and method for injecting congestion in a link between adaptors in a network. A congestion request is sent to a selected adaptor in a containing network component comprising one of a plurality of network components. The selected adaptor is in communication with a linked adaptor in a linked network component comprising one of the network components. The congestion request causes a delay in servicing the selected adaptor to introduce congestion on a link between the selected adaptor and the linked adaptor.

Abstract: Provided are a computer program product, system, and method for interacting with a remote server over a network to determine whether to allow data exchange with a resource at the remote server. Detection is made of an attempt to exchange data with the remote resource over the network. At least one computer instruction is executed to perform at least one interaction with the server over the network to request requested server information for each of the at least one interaction. At least one instance of received server information is received. A determination is made whether the at least one instance of the received server information satisfies at least one security requirement. A determination is made of whether to prevent the exchanging of data with the remote resource based on whether the at least one instance of the received server information satisfies the at least one security requirement.

Abstract: Various embodiments provide systems and methods for migrating data. One system includes a small computer system interface logical unit number (SCSI LUN) configured to store protected data, a processor, and memory configured to store a peer-to-peer remote copy (PPRC) application. The processor is configured to check a block cyclic redundancy check (CRC) for the protected data when the processor receives a request to read the protected data. One method includes receiving unprotected data, utilizing, by a second processor, a peer-to-peer remote copy (PPRC) application to add protection to the data to generate protected data, checking a CRC for the protected data when a request to migrate the protected data is received, and storing the protected data in a protected SCSI LUN.

Abstract: Provided are a computer program product, system, and method for injecting congestion in a link between adaptors in a network. A congestion request is received for the selected adaptor at a containing network component comprising one of the network components. In response to the received congestion request, servicing the selected adaptor is delayed to introduce congestion on a link between the selected adaptor and the linked adaptor.

Abstract: Various embodiments for troubleshooting a network device in a computing storage environment by a processor. In response to an error in a specific port, an alternative error recovery operation is initiated on the port by performing at least one of initiating a silent recovery operation by reloading a failed instruction, taking the port offline, cleaning up any active transactions associated with the port, performing a hardware reset operation port, and bringing the port online.

Abstract: Provided are a computer program product, system, and method for determining when to throttle interrupts to limit interrupt processing to an interrupt processing time. Upon receiving interrupts from the hardware device, a determination is made as to whether a number of received interrupts exceeds an interrupt threshold during a interrupt tracking time period. If so, an interrupt throttling state is set to a first value indicating to only process interrupts during an interrupt processing time period. Interrupts from the hardware device are processed during the interrupt time period when the interrupt throttling state is set to the first value. Interrupts received from the hardware are masked during a processing of a scan loop of operations while the interrupt throttling has the first value and the interrupt processing time period has expired, wherein the masked interrupts are not processed while processing the scan loop of operations.

Abstract: Provided are a computer program product, system, and method for determining when to throttle interrupts to limit interrupt processing to an interrupt processing time. Upon receiving interrupts from the hardware device, a determination is made as to whether a number of received interrupts exceeds an interrupt threshold during a interrupt tracking time period. If so, an interrupt throttling state is set to a first value indicating to only process interrupts during an interrupt processing time period. Interrupts from the hardware device are processed during the interrupt time period when the interrupt throttling state is set to the first value. Interrupts received from the hardware are masked during a processing of a scan loop of operations while the interrupt throttling has the first value and the interrupt processing time period has expired, wherein the masked interrupts are not processed while processing the scan loop of operations.

Abstract: Various embodiments provide systems and methods for migrating data. One system includes a small computer system interface logical unit number (SCSI LUN) configured to store protected data, a processor, and memory configured to store a peer-to-peer remote copy (PPRC) application. The processor is configured to check a block cyclic redundancy check (CRC) for the protected data when the processor receives a request to read the protected data. One method includes receiving unprotected data, utilizing, by a second processor, a peer-to-peer remote copy (PPRC) application to add protection to the data to generate protected data, checking a CRC for the protected data when a request to migrate the protected data is received, and storing the protected data in a protected SCSI LUN.

Abstract: Provided are a computer program product, system, and method for injecting congestion in a link between adaptors in a network. A congestion request is received for the selected adaptor at a containing network component comprising one of the network components. In response to the received congestion request, servicing the selected adaptor is delayed to introduce congestion on a link between the selected adaptor and the linked adaptor.