[gpfsug-discuss] data integrity documentation

[Steve Xiao]

The nsdChksum settings for none GNR/ESS based system is not officially 
supported.    It will perform checksum on data transfer over the network 
only and can be used to help debug data corruption when network is a 
suspect.

Did any of those "Encountered XYZ checksum errors on network I/O to NSD 
Client disk" warning messages resulted in disk been changed to "down" 
state due to IO error?   If no disk IO error was reported in GPFS log, 
that means data was retransmitted successfully on retry. 

As sven said, only GNR/ESS provids the full end to end data integrity.

Steve Y. Xiao



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