Capacity and security of heterogeneous distributed storage systems

Toni Ernvall, Salini El Rouayheb, Camilla Hollanti, H. Vincent Poor

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

10 Citations (Scopus)


The capacity of heterogeneous distributed storage systems under repair dynamics is studied. Examples of these systems include peer-to-peer storage clouds, wireless, and Internet caching systems. Nodes in a heterogeneous system can have different storage capacities and different repair bandwidths. Lower and upper bounds on the system capacity are given. These bounds depend on either the average resources per node, or on a detailed knowledge of the node characteristics. Moreover, the case in which nodes may be compromised by an eavesdropper is addressed and bounds on the secrecy capacity of the system are derived. One implication of these new results is that symmetric repair maximizes the capacity of a homogeneous system, which justifies the model widely used in the literature.

Original languageEnglish
Title of host publication2013 IEEE International Symposium on Information Theory, ISIT 2013
Number of pages5
ISBN (Print)9781479904464
Publication statusPublished - 19 Dec 2013
MoE publication typeA4 Article in a conference publication
EventIEEE International Symposium on Information Theory - Istanbul, Turkey
Duration: 7 Jul 201312 Jul 2013


ConferenceIEEE International Symposium on Information Theory
Abbreviated titleISIT

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