NetBackup 7.5 with DataDomain and Status 2106

Question

Hello Every Body,
I would like to know if some body has faced with this problem.
I have a Solaris 10 as a master server using 10 GB connection and a Data Domain with 10 GB connection also. I have setted up the storage unit and have done some backups.
Today I faced with failed backups due to the Disk storage server is down 2106 error. I run the&nbsp;&nbsp;the following commands to show up the Storage Server status:
nbdevquery -liststs -stype DataDomain -U
	Storage Server&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : Ixtns1-dd
	Storage Server Type : DataDomain
	Storage Type&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : Formatted Disk, Network Attached
	State&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : DOWN
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : OpenStorage
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : CopyExtents
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : AdminUp
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : InternalDown
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : LifeCycle
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : CapacityMgmt
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : FragmentImages
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : Cpr
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : FT-Transfer
nbdevquery -listdv -stype DataDomain -U
	Disk Pool Name&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : Ixtns1-dd-pool
	Disk Type&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : DataDomain
	Disk Volume Name&nbsp;&nbsp;&nbsp; : st-nbu-dd
	Disk Media ID&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : @aaaab
	Total Capacity (GB) : 18882.65
	Free Space (GB)&nbsp;&nbsp;&nbsp;&nbsp; : 18470.09
	Use%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : 2
	Status&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : DOWN
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : ReadOnWrite
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : AdminUp
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : InternalDown
	Num Read Mounts&nbsp;&nbsp;&nbsp;&nbsp; : 0
	Num Write Mounts&nbsp;&nbsp;&nbsp; : 1
	Cur Read Streams&nbsp;&nbsp;&nbsp; : 0
	Cur Write Streams&nbsp;&nbsp; : 0
	Num Repl Sources&nbsp;&nbsp;&nbsp; : 0
	Num Repl Targets&nbsp;&nbsp;&nbsp; : 0
&nbsp;nbdevquery -listdp -stype DataDomain -U
	Disk Pool Name&nbsp;&nbsp; : Ixtns1-dd-pool
	Disk Pool Id&nbsp;&nbsp;&nbsp;&nbsp; : Ixtns1-dd-pool
	Disk Type&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : DataDomain
	Status&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : UP
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : Patchwork
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : Visible
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : OpenStorage
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : SingleStorageServer
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : CopyExtents
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : AdminUp
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : InternalUp
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : LifeCycle
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : CapacityMgmt
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : FragmentImages
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : Cpr
	Flag&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : FT-Transfer
	Raw Size (GB)&nbsp;&nbsp;&nbsp; : 18882.65
	Usable Size (GB) : 18882.65
	Num Volumes&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : 1
	High Watermark&nbsp;&nbsp; : 98
	Low Watermark&nbsp;&nbsp;&nbsp; : 80
	Max IO Streams&nbsp;&nbsp; : -1
	Comment&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; :
	Storage Server&nbsp;&nbsp; : Ixtns1-dd (DOWN)
&nbsp;I used this command to take up the Data Domain Storage Unit:
nbdevconfig -changestate -stype DataDomain -dp &lt;disk pool name&gt; -state UP
Ater a few minutes it cames Down again.
&nbsp;

mark_solutions · Accepted Answer

In addition to the above post, If it has been working but has now gone down it may be a timeout / communications error during busy periods
It is always worth adding a touch file on your Master and Media Servers as follows:
/usr/openv/netbackup/db/config/DPS_PROXYDEFAULTRECVTMO
edit (vi) this file and just put a value of 800 into it
Then re-start NetBackup on each Server to register this change
This just helps with communications during busy periods
As you pool is not coming back up this may not solve it completely so it is worth checking through the admin log on the Master as well as a vxlogview against nbrmms (222) plus enabling the ost-plugin logs
Let us know what you find or post the logs on here

ramnagalla · Answer

hi,
please try to us the Storage server, and let us know if it returns any error.
nbdevconfig -changestate -stype DataDomain -sts&nbsp;Ixtns1-dd&nbsp;-state UP
what is the OST plug-in version and DD os version that you are using?
and also see if the below T/N related to your issue.
http://www.symantec.com/business/support/index?page=content&amp;id=TECH166925

blanco_adalbert · Answer

Thank you for replaying,
I have solved this issue.

mark_solutions · Answer

Great - what exactly was it that was the cause?

blanco_adalbert · Answer

The cause was i enabled the jumbo frames at the master server and the data domain and also de switch because I have a 10 GB network connection but very poor network performance.
I need to go back and set the mtu to 1500 as initial was at the master server and the data domain, and 1514 at the switch level.
&nbsp;
I still have low perfornce but i have adjusted at the master server the NET_BUFFER_SZ and NUMBER_DATA_BUFFER so the performance was better but no as it could be.
&nbsp;
I would like to know If anybody knows how to enable the jumbo frames
&nbsp;
Best regards.
&nbsp;

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NetBackup 7.5 with DataDomain and Status 2106

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