FCP Error Recovery drop-down list
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Choose whether the system uses FCP Sequence Level Error Recovery (FC-TAPE) protocol for sequence level error recovery with tape devices. This enables or disables the Read Exchange Concise (REC) and Sequence Retransmission Request (SRR) functions on the VIC firmware. This can be one of the following:
Note
| This parameter applies only to a server with a Virtual Interface Card (VIC) adapter, such as the Cisco UCS M81KR Virtual Interface Card.
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Flogi Retries field
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The number of times that the system tries to log in to the fabric after the first failure.
Enter any integer. To specify that the system is to continue to try indefinitely, enter infinite in this field. We recommend that you consult your storage array documentation for the optimal value for this parameter.
Note
| This parameter applies only to a server with a VIC adapter or a converged network adapter such as the Cisco UCS M71KR-E Emulex Converged Network Adapter.
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Flogi Timeout field
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The number of milliseconds that the system waits before it tries to log in again.
Enter an integer between 1000 and 255000. The default is 4,000. We recommend that you consult your storage array documentation for the optimal value for this parameter.
Note
| This parameter applies only to a server with a VIC adapter or a converged network adapter.
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Plogi Retries field
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The number of times that the system tries to log into a port after the first failure.
Enter an integer between 0 and 255. The default is 8. We recommend that you consult your storage array documentation for the optimal value for this parameter.
Note
| This parameter applies only to a server with a VIC adapter.
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Plogi Timeout field
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The number of milliseconds that the system waits before it tries to log in again.
Enter an integer between 1000 and 255000. The default is 20,000. We recommend that you consult your storage array documentation for the optimal value for this parameter.
Note
| This parameter applies only to a server with a VIC adapter.
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Port Down Timeout field
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The number of milliseconds that a remote Fibre Channel port should be offline before informing the SCSI upper layer that the port is unavailable. This parameter is important for host multipathing drivers and it is one of the key indicators used for error processing.
Enter an integer between 0 and 240000. The default is 30,000. For a server with a VIC adapter running ESX, the recommended value is 10,000.
We recommend that you consult your storage array documentation for the optimal value for this parameter.
Note
| This parameter applies only to a server with a VIC adapter.
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Port Down IO Retry field
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The number of times that an IO request to a port is returned because the port is busy before the system decides the port is unavailable.
Enter an integer between 0 and 255. The default is 8. We recommend that you consult your storage array documentation for the optimal value for this parameter.
Note
| This parameter applies only to a server with a VIC adapter running Windows.
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Link Down Timeout field
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The number of milliseconds that the uplink port should be offline before it informs the system that the uplink port is down and fabric connectivity has been lost.
Enter an integer between 0 and 240000. The default is 30,000. We recommend that you consult your storage array documentation for the optimal value for this parameter.
Note
| This parameter applies only to a server with a VIC adapter running Windows.
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IO Throttle Count field
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The maximum number of data or control I/O operations that can be pending in the vHBA at one time. If this value is exceeded, the additional I/O operations wait in the queue until the number of pending I/O operations decreases and the additional operations can be processed.
Note
| This parameter is not the same as the LUN queue depth, which is controlled by Cisco UCS Manager based on the operating system installed on the server.
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Enter an integer between 1 and 1024. The default is 16. We recommend that you consult your storage array documentation for the optimal value for this parameter.
Note
| This parameter applies only to a server with a network adapter such as the Cisco UCS M71KR-E Emulex Converged Network Adapter or the Cisco UCS M71KR-Q QLogic Converged Network Adapter. Servers with a VIC adapter ignore this parameter.
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Max LUNs Per Target field
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The maximum number of LUNs that the Fibre Channel driver will export or show. The maximum number of LUNs is usually controlled by the operating system running on the server.
Enter an integer between 1 and 1024. The default value is 256. For servers running ESX or Linux, the recommended value is 1024.
We recommend that you consult your operating system documentation for the optimal value for this parameter.
Note
| This parameter applies only to a server with a VIC adapter or a network adapter.
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Interrupt Mode drop-down list
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Choose the method used to send interrupts to the operating system from the driver. This can be one of the following:
Note
| This parameter applies only to a server with a VIC adapter or a network adapter running an operating system other than Windows. The Windows operating system ignores this parameter.
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