Forum Discussion

PetrHanz's avatar
PetrHanz
Level 4
10 years ago

Windows 2012R2 Master on 7.6.1.1

Hi all,

Windows 2012R2 is fully supported for Master/Media server. We have use this at more sites but in one case the Master server has suspected behaviour. I am sure that problem is out of NBU therefore I ask you for experience with this. I checked another application on the server and verify all NBU logs but no specific error I found.

Description of the problem:  Slowly response of GUI and CLI command, Timeout during query to EMM DB, sometimes gui display that configuration process cannot write to tmp directory.

UAC is disabled by regedit, Firewall is opened, IP4 is used, server is strong (cpu, memory,disk) .... So, backup/restore finish succesfully (for now), troubles are mainly during change configuration, query to catalog, query to reports.

Many thanks for your experiences ...

 

Petr

Backup and Recovery
NetBackup
Not Applicable
  • Nicolai's avatar
    Nicolai
    10 years ago

    Check name resolution - a DNS server responding slow can cause those type of issues.

    Use the nslookup command - not ping as it may use WINS for name resolution.

  • Marianne's avatar
    Marianne
    10 years ago

    A fellow Trusted Advisor recently shared the following Performance Tuning advice:

    1. The paging file was set to automatic. It has been set to a fixed value 64GB (twice the physical memory) and set to use the F drive which has the most free space.
    2. Increased the number of worker threads available to Windows using the following registry keys (note that the RpcXdr\Parameters\DefaultNumberofWorkerThreads needed to be created):

     


    Parameter

    Value

    HKLM\SYSTEM\CurrentControlSet\Services\RpcXdr\Parameters\
    DefaultNumberofWorkerThreads

    64

    HKLM\SYSTEM\CurrentControlSet\Control\SessionManager\
    Executive\AdditionalDelayedWorkerThreads

    16

    HKLM\SYSTEM\CurrentControlSet\Control\SessionManager\Executive\
    AdditionalCriticalWorkerThreads

    16

    These recommendations (and more) can be found in:

    The NetBackup Backup Planning and Performance Tuning Guide, Release 7.5 and Release 7.6  
     http://www.symantec.com/docs/DOC7449

    There is also this forum post that deals with EMM tuning:
    https://www-secure.symantec.com/connect/forums/simplest-questions-reasa-db-threads

    Hope this helps.

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  • Nicolai's avatar
    Nicolai
    Moderator
    10 years ago

    Check name resolution - a DNS server responding slow can cause those type of issues.

    Use the nslookup command - not ping as it may use WINS for name resolution.

  • Marianne's avatar
    Marianne
    Level 6
    10 years ago

    A fellow Trusted Advisor recently shared the following Performance Tuning advice:

    1. The paging file was set to automatic. It has been set to a fixed value 64GB (twice the physical memory) and set to use the F drive which has the most free space.
    2. Increased the number of worker threads available to Windows using the following registry keys (note that the RpcXdr\Parameters\DefaultNumberofWorkerThreads needed to be created):

     


    Parameter

    Value

    HKLM\SYSTEM\CurrentControlSet\Services\RpcXdr\Parameters\
    DefaultNumberofWorkerThreads

    64

    HKLM\SYSTEM\CurrentControlSet\Control\SessionManager\
    Executive\AdditionalDelayedWorkerThreads

    16

    HKLM\SYSTEM\CurrentControlSet\Control\SessionManager\Executive\
    AdditionalCriticalWorkerThreads

    16

    These recommendations (and more) can be found in:

    The NetBackup Backup Planning and Performance Tuning Guide, Release 7.5 and Release 7.6  
     http://www.symantec.com/docs/DOC7449

    There is also this forum post that deals with EMM tuning:
    https://www-secure.symantec.com/connect/forums/simplest-questions-reasa-db-threads

    Hope this helps.

  • PetrHanz's avatar
    PetrHanz
    Level 4
    10 years ago

    Hi Marianne and Nicolai,

    many thanks for your advices .... DNS I checked because this is frequently problem. I used wireshark and tcpview for monitoring network. Also I tested 7.6.1.1 in my lab where I simulated some DNS trouble but NBU is running very well. My colleague notice me about some trouble with new Dell server and their RAID system (firmware update was needed)  with another backup SW (TSM)  and its behaviour was simple as me.

    The performance setting is good idea,  Marianne.  Because the installation process took longer as expected the trouble wil at the server.  

    I will check this on next Monday/Tuesday and latter I will add any result of this ....

    Have a nice week

  • watsons's avatar
    watsons
    Level 6
    10 years ago

    1) There used to be a performance guide for NBU7 running on Windows 2008 R2 platform

    http://www.symantec.com/docs/TECH145791

    Not sure if it can be applied on Windows 2012 R2, but some of those points are still valid I suppose.

    2) Is your master server also configured as media server, or even worse, a MSDP server? It is not recommended. Make it solely a master server if possible.

    3) Ah.. Windows makes me think of AntiVirus, so check this out: 

    http://www.symantec.com/docs/TECH152328

  • PetrHanz's avatar
    PetrHanz
    Level 4
    10 years ago

    Hi all,

     

    the trouble was in DNS reverse record for iSCSI interface ( Master/Media  server has two network cards with different ip ranges ). Normally, the DNS record for iSCSI are not used therefore I checked reverse record for first LAN network card , only.

     

    many thanks, Petr