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Size limit of cluster objects names

    Question

  • Hi ,
    Is there any string length limit specified by the Microsoft on the names we give for
    1. Cluster name
    2. Cluster Resource Group name
    3. Cluster Resource name

    I went through the Active Directory naming conventions. It says, for  proper name resolution, the recommended limit is 15 characters.
    Is there any cluster documentation which specifies/enforces these limits on cluster administrators ?
    Also can i give infinite characters for descriptions of these objects i.e Resource description

    Thanks very much in advance.
    Tuesday, September 15, 2009 9:51 AM

Answers

All replies

  • Their length should be no more than 15.

    Thursday, September 17, 2009 4:17 AM
  • The cluster name and other network name resources must be a valid netbios name, so this cannot be more than 15 characters

    I'm not sure what the limit is for the resource group or resource names. I just tested using 1300 character resources in a group name of 1300 characters and this worked fine in my lab environment on a Windows 2008 cluster. Not sure if there's a documented limit.

    In 2008, there is no longer a "Description" field for cluster resources/groups. In 2003, again I'm not sure if there's a documented limit though it seems to take at least 1300 characters in the description field.

    Hope this helps.
    Visit my blog about multi-site clustering - http://msmvps.com/blogs/jtoner
    Thursday, September 17, 2009 3:09 PM
    Moderator
  • Yes, for best compatibility it is recommended to keep server names under 15 characters.

    Lets take a step back, what are you trying to accomplish?  Why do you want to store massive strings?  Why would you want extremely long server names?  It starts to become a really poor client experience to tell them to map a share to \\ThisIsOurCompaniesFileServerThatResidesOverThere\Share   typo's, etc... this becomes ugly, error prone, etc...   So I would like to better understand your scenarios and goals.

    Thanks!
    Elden
    Thursday, September 17, 2009 4:48 PM
    Owner
  • Thanks John!!!
    I also tried the same experiment here and got same results.
    for cluster name it allowed 15 characters and for resources 259(windows 2003)  and 63(windows 2008) .
    anything more than that for resource name causes resource to fail.
    Thursday, September 24, 2009 12:35 PM