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McDATA UltraNet Edge 3000 User Guide
Minimum Requirements for CRC
An Edge configured for FC/SCSI Tape Pipelining has added
functionality when an End-to-End CRC error is detected. If an
End-to-End CRC error occurs while Write Pipelining is active, the
tape device will be repositioned to the last successful write and the
Write I/Os active in the pipe at the time of the CRC error will be
retried one time only. If the CRC retry is not successful bad ending
status is returned.
Minimum Requirements for CRC
The minimum hardware levels for both Frame Level and End to End CRC
are provided in the UltraNet Edge Storage Router - 3000 Series Release
Notes (part number 30200581).
Fibre Channel MTU Batching
MTU Batching is available on the UltraNet Edge 3000 FCBB Fibre
Channel card.
The MTU Batching size defines the MTU for the batch of backbone
frames that are collected and transmitted as one packet across the
network. The batching size is set to 16000, this means a maximum of
16 frames will be batched.
MTU Batching is available for E_port and F_port configurations on
the FCBB Fibre Channel card.
The default is On and set for 16000. To disable this option, see the
Configuring the Internal McDATA Fibre Channel Switch Interface section
in Appendix D, Advanced UCM Configurations.