Got an odd problem replicating data with Data Domain's across a gigabit WAN connection between two locations. Each location has a couple of DD's each with 10G network connections using Jumbo Frames (MTU=9000).
But our WAN doesn't support MTU's greater than 1500, so we are trying to utilize the gigabit ports built into the appliances for replicating data across the WAN by defining static routes on each Data Domain to specify use of the gigabit ports when communicating between each other.
This works perfectly from location A to location B, we can run iostat on the Data Domain and the data is, indeed, going out of the DD at location A through the 1G port using an MTU of 1500 and is read into the DD at location B through the 10G port. But trying to do the same thing from location B to location A results in a status 84 in the duplication job, which then runs a non-optimized duplication across the WAN and uses an MTU of 9000, which won't work:
Jul 8, 2011 1:31:42 PM - Critical bpdm (pid=13022) sts_copy_extent failed: error 2060046 plugin error
Jul 8, 2011 1:31:42 PM - Critical bpdm (pid=13022) image copy failed: error 2060046: plugin error
Jul 8, 2011 1:31:42 PM - Error bpdm (pid=13022) cannot copy image from disk, bytesCopied = 18446744073709551615
Jul 8, 2011 1:31:52 PM - Error bpduplicate (pid=7374) host XXXXXX.XXXXXX.XXXXXX backup id YYYYY.YYYYY.YYYYY_1309976921 optimized duplication failed, media write error (84).
Jul 8, 2011 1:31:52 PM - Error bpduplicate (pid=7374) Duplicate of backupid YYYYY.YYYYY.YYYYY_1309976921 failed, media write error (84).
Jul 8, 2011 1:31:52 PM - Error bpduplicate (pid=7374) Status = no images were successfully processed.
Jul 8, 2011 1:31:52 PM - Error bpduplicate (pid=7374) Continuing with normal duplication.
I've looked in the bpdm and bptm logs and can't find anything more than the above plugin error. Any ideas where else I can look to get more info?
