IT Baseline Protection Manual - The Information Warfare Site

Safeguard Catalogue - Communications Remarks
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required data media. For this, the measures in S 2.3 Data media control and
Chapter 4.3.3 Data media archive must be observed.
The following factors are influential in this context:
Availability requirements:
The higher the availability requirements, the faster the required access to
relevant data media. If manual inventory-keeping does not fulfil the
availability requirements, automatic access systems (e.g. robotic cassette
archives) can be used.
Data volumes:
The data volume decisively determines the number of data media to be
stored. Large data volumes require correspondingly large storage capacities
of the data archive.
Deadlines:
If erasures deadlines need to be maintained, the data backup archive must
be organised appropriately and equipped with the required erasure devices.
Erasures are to be executed and documented in the data backup archive by
the specified deadlines. In the event that erasure is not technically possible,
organisational measures can prevent reuse of files to be erased.
Data confidentiality and integrity requirements:
The higher these requirements are, the more important it is to prevent data
media from being manipulated. In general, the access control necessary for
this can only be achieved by the infrastructure and organisation-related
measures described in Chapter 4.3.3 Data Media Archive.
Transport modes
Data are transferred during any backup process. The following must be
observed in such situations, irrespective of whether data are being transferred
through a network or line, or whether data media are being dispatched to an
archive.
Availability requirements:
The higher the availability requirements, the more quickly data need to be
obtained for restoration. This is to be considered during the selection of the
transmission medium or transport mode.
Data volumes:
If data required for restoration are to be transferred through a network, the
selection of the network's transmission capacity must also be based on the
data volumes. It must be ensured that the data volumes can be transmitted
within the required time periods (availability requirement).
Data modification times:
If data backups are performed through a network (particularly at specified
intervals), the data volumes involved can result in congestions during
transmission. A sufficient transmission capacity must, therefore, be
ensured at the time of data backup.
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IT-Baseline Protection Manual: Oktober 2000