Service Certificate – STACKIT Backup Storage

Service Name

• STACKIT Backup Storage
• STACKIT Incremental Backup Storage

High level service description

The STACKIT Backup Storage (“Backup Storage”) provides high performance storage systems to provide persistent data storage for backups of Disk Volumes of the Block Storage chosen separately by the Customer; (Block Storage represents a separately obtainable STACKIT Cloud Service, see (Service Level Agreement -STACKIT Block Storage) (“Block Storage”). The Backup Storage is logically and physically separated from the Block Storage.

Key Features

• Provision of a Backup Storage for storing backups of the Block Storage (Disk Volumes)
• Backups are stored on a Backup Storage that is physically and logically separated from the Block Storage
• Full and Incremental Backups can be created, retained and deleted as required
• The backups are always stored redundantly in two Availability Zones. Replication of the backups is performed asynchronously after the backup is completed

Service Plans

Backups of Disk Volumes of the Block Storage can be created in two ways according to the customer’s choice:

• Full Backup: A backup of an entire Disk Volume is created; the backup has the same size as the Disk Volume of the Block Storage selected by the customer
  • The recovery time of a Full Backup is largely dependent on the size and performance class of the target Disk Volume.
  • Full Backups used by Incremental Backup(s) cannot be deleted until Incremental Backups are deleted.
  • The duration of the creation of Full Backups is primarily dependent on the performance class of the respective source Disk Volume of the Block Storage used by the customer.
• Incremental Backup: Only the changes related to the specified Full Backup are backed up; the backup has the size of the underlying source Disk Volume.
  • An Incremental Backup must always refer to a Full Backup.
  • The restore time of an Incremental Backup depends significantly on the respective size of the Incremental Backup in addition to the size of the Full Backup as well as the performance class of the target Disk Volume.

It should be noted that the speed of creating or restoring a backup is basically dependent on the performance class of the particular Disk Volume used, as well as the actual utilization of the Disk Volume (Service Level Agreement – STACKIT – Block Storage).

Metric

• (Full) backup storage: Billing per hour or part thereof per gigabyte per backup (usually corresponds to the size of the disk volume).
• Incremental Backup Storage: Billing per hour or part thereof per gigabyte per backup (usually corresponds to the size of the disk volume).

SLA Specifics

• The Backup Storage is considered available if it can be accessed at the power transfer point.
• This does not include customer configurations or other customer-related properties for unavailability.
  • The STACKIT Backup Storage is also available when the previous operations are unavailable due to a Block Storage failure.
• Die Durability ist definiert als der prozentuale Anteil der Zeit, in der das System korrekt funktioniert und die Integrität der darin gespeicherten Daten bewahrt wird. Die Durability wird anhand der Wahrscheinlichkeit eines Datenverlusts berechnet, d. h. eines Fehlerereignisses im System, das zu einer Beschädigung der Daten oder einem dauerhaften Verlust des Datenzugriffs führen kann.
  • The durability of the Backup Storage is 99.9% on a calendar month average.

Backup

• A backup of the Backup Storage does not take place.

Additional Terms

• Managing, creating and deleting the respective backups are the responsibility of the customer.
• Ensuring the recovery procedure for the created backups.