EXCH GRT backup error 'ERR - Unable to initialize nbfsd, Error encountered while attempting to get additional files for Microsoft Information Store:\Mailbox Database 1414338782\logs_1348879765\ 9/28/2012 5:50:50 PM - Info nbjm(pid=3384) started backup job for client LAB.MYLAB.LOCAL, policy lab-win-exch, schedule daily-full on storage unit fhdcbkpsrv02-disk 9/28/2012 5:50:50 PM - started process bpbrm ( 1460 ) 9/28/2012 5:50:51 PM - Info bpbrm(pid=1460) LAB.MYLAB.LOCAL is the host to backup data from
Not true, but similar sizes can be useful. The data to be transferred is broken into smaller, typically 1460 byte ethernet frames, for transmission and acknowledgement. The buffer of application data is not transferred enmass as a unit.
shows that although the O/S is requested to fill a 256KB buffer, the data is coming off the network 1448 bytes at a time ( 1460 bytes - 12 bytes for timestamp) and with a 10-30 millisecond delay between each. This further confirms that the delays are below the application layer. 09:45:01.872 693 recvfrom(0, \346 ..., 47912, 0, NULL, NULL) = 1448