Enable CEPA on the Data Mover

  1. The CEPA configuration is separate and must be done for each physical data mover.
  2. If you have multiple virtual data movers with CIFS servers, the CEPA configuration must be on the physical data mover (usually server_2 data mover when there is a single physical data mover).
  3. If the configuration file (cepp.conf) does not exist, create a new one.
  4. Log in to the system with your administrative username (nasadmin) and password.
  5. Use a text editor to create a new, blank file called cepp.conf file in the home folder with the following content:

    ft level=[0/1] location=<location> size=<size>
    pool name=sepapool \
    servers=<cee1 FQDN>|<cee2 FQDN>|<cee3 FQDN> \
    preevents= \ postevents=OpenFileRead|CreateFile|FileWrite|FileRead|CreateDir|DeleteFile|DeleteDir|CloseModified|RenameFile|RenameDir|SetAclFile|SetAclDir|SetSecFile|SetSecDir\
    posterrevents= \
    option=ignore \
    reqtimeout=500 \
    retrytimeout=50

    The ft level parameter sets the fault tolerance level assigned. Valid values are 0-3, where:

    0 = continue and tolerate lost events (default)

    1 = continue and use a persistence file as a circular event buffer for lost events

    2 = continue and use a persistence file as a circular event buffer for lost events until the buffer is filled and then stop CIFS

    3 = upon heartbeat loss of connectivity, stop CIFS

    It is recommended that this value be set to 1. If you kept the recommended value, fill in the <location> and <size> parameters, where:

    location

    Directory where the persistence buffer file resides relative to the root of a file system. If a location is not specified, the default location is the root of the file system.

    size

    Maximum size of the persistence buffer file, in MB. The default is 1 MB and the range is 1 MB to 100 MB. It is recommended to set it at 100MB

    It is important to verify that all CEE FQDN server names are resolved and reachable from the data mover. You can also fill in the IP address of the server instead of FQDN.

  6. Copy the newly created file to the data mover:

    server_file <movername> -put cepp.conf cepp.conf

    If cepp.conf exists, verify that the postevents parameter has the required values.

  7. For NFS run the following command:

    server_mount <data_mover> -o ceppcifs,ceppnfs <file system name> /<file system path>