Auto Image Replication not working properly

Question

Hi,

I doing a project to setup 2 MSDP on 2 location, when starting, i put the server side by side and all run perfect even i enable accelerator

So i move 1 MSDP to DR side, replication starting not to work. then i disable acceletor, replication start to work back. I believe the setup is correct just not sure which port need to open for the accelerator to communicate

Do i need to open other port for acceletor to communicate ?&nbsp;

Ports open between 2 site

HQ --&gt; DRC

1556, 10102, 10082

&nbsp;

DRC --&gt; HQ

1556

NetBackup version 7.6.1.1&nbsp;

MSDP windows 2012 R2 server

anyone please help ?

watsons · Accepted Answer

When you move the target MSDP to DR site, did its IP address change?&nbsp;

I am not sure how the impact would be if the IP address did&nbsp;change, possibly causing replication error?&nbsp;

Personally I don't think it has to something to&nbsp;do with Accelerator. I will try to test something similar to see if I can get what you experienced (Accelerator + AIR)

kimchooi · Answer

More testing

I create a new policy perform backup the replication to DR work fine, i re-run backup without accelerator, then replication job failed

+++++++++++++++++++++++++++++++
	May 19 13:49:02 INFO [0000000001BB0090]: Starting replication with a bandwidth limit of 0 KB/s
	May 19 13:49:02 INFO [0000000001BB0090]: sessionStartAgent: Server is Version 8.0101.0015.013, Protocol Version 6.6.1.1
	May 19 13:49:03 ERR [0000000001BB0090]: 36: _crBinaryMessageSend2: Error sending data: connection reset by peer
	May 19 13:49:03 ERR [0000000001BB0090]: 36: __process_refop_batch: could not send reference message(s): connection reset by peer
	May 19 13:49:03 ERR [0000000001BB0090]: -1: &nbsp;__process_refop_batch: Could not send reference message: connection reset by peer
	May 19 13:49:03 ERR [0000000001BB0090]: 36: CRReplicate: reference operation batch failed at DO 5a19697264c5d9d96e484c8cb4c037f6:6147
	May 19 13:49:03 INFO [0000000001BB0090]: -----------Replication Last Image Cache Report-----------------
	May 19 13:49:03 INFO [0000000001BB0090]: Total cache entry: 224997
	May 19 13:49:03 INFO [0000000001BB0090]: Cache Hits &nbsp; &nbsp; &nbsp; : 173850
	May 19 13:49:03 INFO [0000000001BB0090]: Cache Miss &nbsp; &nbsp; &nbsp; : 1725
	May 19 13:49:03 INFO [0000000001BB0090]: Cache Rebase &nbsp; &nbsp; : 0
	May 19 13:49:03 INFO [0000000001BB0090]: -----------------------End-------------------------------------
	May 19 13:49:03 ERR [0000000001BB0090]: 36: Puredisk::Replication::Engine::ReplicationThread::_forwardFingerprintBatch: CRReplicate of batch failed (connection reset by peer).
	May 19 13:49:03 ERR [0000000001BB0090]: 36: Puredisk::Replication::Engine::ReplicationThread::_forwardDataList: forward fingerprints failed (connection reset by peer).
	May 19 13:49:03 ERR [0000000001BB0090]: 36: _crBinaryMessageSend2: Error sending data: connection reset by peer
	May 19 13:49:03 ERR [0000000001BB0090]: 36: Synchronization to pkpsbackup_drc failed (connection reset by peer).
	May 19 13:49:03 ERR [0000000001BB0090]: 36: _crBinaryMessageSend2: Error sending data: connection reset by peer
	May 19 13:49:03 WARNING [0000000001BB0090]: 36: Pd_ReplicationClass::ClientTask: failed at the 1 time for job[1d] (connection reset by peer)
	May 19 13:49:08 INFO [0000000001BB0090]: Puredisk::Replication::Engine::ReplicationEngine::forward: beginning replication for Data Protection Application job id 288
	+++++++++++++++++++++++++++

above logs from replication.log, why initial first backup and replication work, but not subsequent backup ?

All this never happen when server without firewall rules, what others port require 2 MSDP to communicate ?

&nbsp;

sdo · Answer

You need tcp/1556 and&nbsp;tcp/10082 and tcp/10102 all bi-directional for NetBackup AIR to work between MSDP storage servers.

kimchooi · Answer

Just open bidirectional, still not fully working

I create a backup job with few path total 128GB, dedupe almost 98%&nbsp;

First try it can replicate over to DR MSDP server

I re-run backup again, replication&nbsp;failed with above message

sdo · Answer

Have you confirmed open ports, using six different telnet commands:

source-machine# telnet target-ip port

...i.e. test three ports - each way?

kimchooi · Answer

tested all port working ( port forward )

As i said, it can replicate to DR MSDP but only first time

&nbsp;

I also create another backup policy with 1 path 2 files , Dedupe 80% around 6 GB

For this backup, replication will always work, i run at least 3 times, and everytime it got replicate to DR

&nbsp;

But for my previous backup policy with 4 path a lot of files with backup size 120+ GB, it only replicate successful for the first time, but failed after that

Anyone has this kind of weird behaviour ?

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Auto Image Replication not working properly

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