Creating Archives

About this task

New archives can be created automatically once the existing archive reaches a size limit or when a specific amount of time has elapsed since the last archive creation.

Archives based on size

collect data until they reach the specified storage limit. Once the limit is reached, a new archive is created and the data is loaded into that archive. Historian supports a maximum archive size of 256 GB per archive.

To create an archive based on size:

  1. Open the Data Store Maintenance page and select Data Store Options.
  2. In the Archive Creation section, in the Default Size (MB) field, select the BySize option from the drop-down list.
  3. Enter the size that you want to set to the archive. By default, the size is 100 MB.
  4. Select Update. An archive based on size is created.

Archive Creation based on Duration

To create an archive based on duration:

  1. Open the Data Store Maintenance page and then select Data Store Options.
  2. In the Archive Creation section, in the Archive Duration field, select the Days or the Hours option from the drop-down list.
    Note: If the archive is based on size, the Default Size (MB) field is displayed next to the drop-down list. If you select either the Days or Hours options, the Default Size (MB) changes to Archive Duration field.
  3. Enter the number of days/hours for which you want to create archives.
  4. Select Update. Depending on what you selected, an archive, based on days/hours is created.
    Note: Setting the day as 1 means that a new archive will be created every day starting from the time your first archive is created. The next archive is created after one day, 24 hours from the time the first archive was created.

    Setting the hours as 1 means that a new archive will be created after every hour starting from the time your first archive has been created. You can observe the archives on the left side, under Archives, with the name of the archive and start time for each archive.