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Julien_Lux's avatar
Julien_Lux
Level 2
14 years ago
Solved

2 Media servers and CASO - what if one crashes

Hello,

I run BE2010 with 2 servers. Server A is the CASO one and is connected to dedup storage A. Server B is just a MMS and connected to dedup storage B. I run all jobs followed by a duplicate. If backup job runs on Server A / Dedup A, then there is duplicate job to put data as well to Dedup B. And vice versa. This way, the 2 dedup storages are synchronized and contains the same data. The catalog for both servers is shared.

As a test, I did shutdown Server B only ( MMS one ) and from Server A ( CASO )I was able to restore any of the jobs. Not only the ones done on Server A, but also the ones done on Server B and duplicated to Server A. In short, the catalog contained everything.

 

As a second test, I did shutdown Server A only ( CASO one ). And from Server B, the catalog contains only the jobs which have run form this server B, and not the ones run from Server A and duplicated to Server B.

 

So, I am wondering, how to see the complete catalog ? The whole data is for sureon Dedup B

I was about to do an inventory then a catalog of Dedup B, but it is a 9TB disk and it will last for hours...

 

Any help is more than wlecomed.

Thanks.

Julien.

 

 

 

2010
Backup and Recovery
Backup Exec
Best Practice
Central Admin Server Option
Configuring
Recovering
Restore
  • CraigV's avatar
    CraigV
    14 years ago

    ...you can look into replicating the details between the 2 servers as you mentioned.

    By hacking out the CASO server's details on Server B I mean you've got to do a search in the Symantec key under HKEY_LOCAL_Machine\SOFTWARE and replace it with the name of Server B which should allow you to resume local backups on Server B.

    If you had a spare server on the site where Server A is located, you could cluster the server offering an extra level of hardware/OS redundancy.

5 Replies

  • CraigV's avatar
    CraigV
    Moderator
    14 years ago

    Hi,

     

    I take it you have Server B's device and media information centralised on Server A? If not, this would explain why you can't see the information from Server A. Server A controls Server B, and no information is stored on Server B.

    That said, if you did so and Server A died, all jobs would effectively stop on Server B until you got the CASO running again. You'd have to hack the CASO information out of the registry before trying to run jobs on Server B again.

    Thanks!

  • Julien_Lux's avatar
    Julien_Lux
    Level 2
    14 years ago

    Hi,

    That's correct, on ServerB, On Media Server Properties, Tab Advanced, Device and Media database location is : Central Admin Server, that is to say Server A.

    But is there a different setup ? This is greyed out. And I can only change the catalog location which is currently set to replicated. 

    So, how can I have Server B fully operated in case I loose server A. I am not sure understand what you mean by "You'd have to hack the CASO information out of the registry before trying to run jobs on Server B again.".

     

    Or maybe the whole setup is not the best one. Server/Dedup disk A and Server/Dedup disk  B are on different sites actually. They run backup in parallel and then there is a cross duplication so that the 2 storages contains the same data. And the goal is to be able to restore everything from one site A or B easily. If site/server/dedup B  is down, that's fine. But if site/server/dedup A is down, I miss half of the data in the catalog from server B even if I am sure that dedup disk B contains everything.

    Thanks a lot for more details.

    Julien.

  • CraigV's avatar
    CraigV
    Moderator
    14 years ago

    ...you can look into replicating the details between the 2 servers as you mentioned.

    By hacking out the CASO server's details on Server B I mean you've got to do a search in the Symantec key under HKEY_LOCAL_Machine\SOFTWARE and replace it with the name of Server B which should allow you to resume local backups on Server B.

    If you had a spare server on the site where Server A is located, you could cluster the server offering an extra level of hardware/OS redundancy.

  • Julien_Lux's avatar
    Julien_Lux
    Level 2
    14 years ago

    Ok, thanks.

    I do not like to change the keys, but I will give it a try.

  • CraigV's avatar
    CraigV
    Moderator
    14 years ago

    ONLY change the keys if your CASO is down and you need backups to run...