Configuring a Data Store

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Docs latest icon.png Welcome to the latest SEP sesam documentation version 4.4.3 Tigon/4.4.3 Beefalo V2. For previous documentation version(s), check Documentation archive.

Information sign.png SEP AG has discontinued support for SEP sesam version 4.4.3 Tigon (V1 and V2). Instructions are still available for these SEP sesam products, however, SEP AG accepts no responsibility or liability for any errors or inaccuracies in the instructions or for the incorrect operation of obsolete SEP sesam software. It is strongly recommended that you update your SEP sesam software to the latest version.


Data store is a device type used for writing the savesets directly on one or several configured storage locations – into the file system. Data store configuration consists of specifying data store capacity and high watermark (HWM) (note that low watermark is obsolete as of v. 4.4.3 Beefalo). The default data store type is Path, also available are SEP Si3 deduplication store and (depending on version) NetApp Snap Store, HPE StoreOnce and HPE Cloud Bank Store

From the Store type drop-down list, select Path. Skip the Messages section, which is used by SEP sesam to display the last executed action.

Information sign.png Note
When configuring any other store type than Path, e.g., Si3 deduplication store, HPE StoreOnce or HPE Cloud Bank Store, you should be aware of the requirements and recommendations before you start using these special data store types. For details, see Configuring Si3 Deduplication Store, NetApp Snap Store, HPE StoreOnce, and HPE Cloud Bank Store, respectively.

Segment Drive Parameter

  • Make sure that the option Create drive for data store is checked under the Drive parameter properties. The predefined value for the drive is automatically added to the Drive number field.
  • As of SEP sesam 4.4.3 Tigon, the option Create second drive is available.
  • SEP Tip.png Tip
    It is recommended to use the option Create second drive for both data store types (Path and Si3). Without it, SEP sesam can only allocate a drive either for reading or writing, running one job at a time on the same drive. By using the additional dedicated drive for restore, you are able to run a backup on the first drive and restore your data from the second drive simultaneously. You can also add a third drive for migration.
    • Note that any additional drive dedicated for restore or migration must have the access mode set to read in the Drive properties.
    • When using additional drives, all backup jobs must be configured to use the drive dedicated for backup. You specify the drive number for a backup job as described in Creating a Backup Event.
    • In case you use the additional drive for migration, you have to specify the dedicated drive as described in Creating a Migration Task.
    • You can configure the number of streams per drive. This enables you, for example, to limit the number of parallel backups to 5, but use a higher number of concurrent streams for migration.
  • From the Device server drop-down list, select the device server for your data store. Note that the standard device server is always the SEP sesam Server itself. Other available device servers included in the drop-down list are additional SEP sesam Remote Device Servers (RDS).
  • In the Path field, enter the location for your data store or use the Browse button to select the relevant folder and click OK.
  • Data store new path Beefalo.jpg
    When using the Browse button to select the folder, the New data store information window appears with predefined recommended values for your data store size. Click OK to confirm the selected location and the recommended size values. You can modify your data store size later under the Size properties (see step 12). For details on how the size is calculated, see How do I calculate the data store capacity.

    Recommended values data store Beefalo.jpg

  • Option This drive uses data deduplication technology ... is only available for default data store type Path. Select this check box only if deduplication is enabled on the selected drive. In this case, the projected amount of storage available for backups will also include the deduplication factor.
  • Under the Drive group properties, select Create new drive group if you want to create a new group or Use existing drive group to add a drive to one of the configured groups, available in the drop-down list.
  • The predefined number of channels is already displayed in the Max. channels drop-down list. The number of available channels depends on your SEP sesam Server package. The standard license supports 5 concurrent streams, enabling 5 backup processes to run simultaneously. For details on SEP sesam licenses, see Licensing.
  • Segment Size

  • Under the Size properties, the predefined recommended values for your data store size are already displayed. If not, enter the following values manually.
    • Capacity: The size (in GB/GiB) of the partition for backups.
    • High watermark: The value (in GB/GiB) for the high watermark (HWM). The HWM defines the upper value for used disk space. When this value is reached, a data store purge process is started for all EOL-free savesets, thus freeing up the capacity of the data store.
    • Information sign.png Note
      In previous versions of SEP sesam (≤ Tigon), if HWM was set and exceeded, backups could no longer be started while running backups were allowed to finish. Purging is done until the low watermark is reached (if set). This behaviour has changed with SEP sesam v. ≥ Tigon V2; if HWM is set, exceeding it will only issue an information message but will no longer prevent backups to be started.
    • Low watermark (LWM): Obsolete as of v. 4.4.3 Beefalo, relevant only for previous versions of SEP sesam.
    For details on what should be considered when specifying the size, see How do I calculate the data store capacity.
  • Segment (read-only) Disk Space Usage

    The Disk space usage properties are used by SEP sesam to report the following:

    • Used: Total used space (Gib/Tib) on the partition.
    • Total: Maximum available space (Gib/Tib) on the partition as reported by the operating system.
    • Free: Available disk space (Gib/Tib) for SEP sesam.
    • Deduplication rate: If applicable. The deduplication ratio is depicted as ratio:1.
  • Click OK to configure your data store. You will be prompted to create a new media pool for it immediately. If you answer No, you have to create the media pool later and your configuration is finished. If you answer Yes, a new media pool dialog is displayed.
  • Creating a media pool

  • Enter a media pool name, select a drive group and set up the Retention time in days. Retention time is a media pool related parameter that specifies the number of days, for which the media from the pool are protected from writing, thus preserving the backed up data and keeping it available for restore (see Managing EOL). Once the retention time expires, the media are writable again. For details on how to configure a media pool, see Configuring media pools for data stores.
  • Data store new media pool Beefalo.jpg

    Once you set up your backup strategy, you can back up your data to your new media pool. You can start a configured backup task immediately or schedule it to run after you have created a schedule and linked a backup event to it. For details, see Creating a Schedule and Creating a Backup Event.

    If you want to start the backup task immediately, right-click the name of the backup task and click Immediate start. Note that you only need to select the appropriate media pool referring to your data store and click Start.

    See also

    Data StoreConfiguring Si3 Deduplication StoreNetApp Snap StoreHPE StoreOnceHPE Cloud Bank StorageHow to use CIFS share (NAS) as data store and how to back up data from CIFS share