====== HA Storage: open-source cluster active/passive ======

“Storage in HA: cluster attivo/passivo open source.”, G.Birello, I.Fucile, V.Giovanetti, A.Perin
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Rapporto Tecnico N.37, giugno 2011, Ceris-CNR
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[[http://www2.ceris.cnr.it/ceris/rapportitecnici/2011/RT_37_11_BIRELLO.pdf|Full-text (PDF)]]

**ABSTRACT:** 
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Ceris-CNR IT Office manages the CNR Piedmont network infrastructure and provides
network services for about 420 users.
The development of a large and reliable storage system is the answer to two needs: one from users,
who must deal with ever more larger digital objects for personal and research use, and one from need
to have a space system engineering to store virtual machines and backup copies.
To contain expenditure and without detracting from the reliability of the system, we choose to
concentrate financial commitment on quality hardware and realize the whole project with open-source
software, specifically the main components are: Linux, DRBD (Distributed Replicated Block Device),
Corosync and Pacemaker.
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**KEY WORDS:** cluster, open-source, linux, storage
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  * [[clusterbase:blockd|Cluster block diagram]]
  * [[clusterbase:network|Cluster network configuration]]
  * [[clusterbase:drbdgen|DRBD common configuration]]
  * [[clusterbase:drbddisk|DRBD disk configuration]]
  * [[clusterbase:corosync|Corosync]]
  * [[clusterbase:pacemaker|Pacemaker]]
  * [[clusterbase:iscsi|iSCSI configuration]]