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Service is process or process group registered in service manager of Linux O.S.
SCSI-LOCK
SCSI-LOCK uses SAN protocol which is called SCSI-3 PR(Persistent Reservation). This is needed to prevent any data corruption which enable only one node can access a disk volume in environment where disk volumes are shared between nodes.
Resource Group
Resource group is a set of resources with dependency and MCCS failover the entire resources in a group.
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