All disks in Spectrum Scale have a few pieces of information at fixed positions: Sector 1 is the "File System unique ID". This will be matched in the file system descriptor to a Spectrum Scale disk name, and is written to the disk when it is added to the file system with mmcrfs, mmadddisk, or … Continue reading File System Descriptor Quorum in Spectrum Scale
Month: April 2018
Cluster quorum and Spectrum Scale
Spectrum Scale systems are organized into clusters. File systems and underlying resources are owned by clusters, managed by clusters, and possibly exported to remote clusters. Within a cluster, there is a need for certain management functions. Because we would like the cluster to remain active even in the face of systems or network links failing, … Continue reading Cluster quorum and Spectrum Scale
Parallel File Systems 