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InfoScale™ 9.0 Storage Foundation and High Availability Solutions Microsoft Clustering Solutions Guide for Microsoft SQL Server - Windows
Last Published:
2025-04-13
Product(s):
InfoScale & Storage Foundation (9.0)
Platform: Windows
- Introducing SFW solutions for a Microsoft cluster
- Planning for deploying SQL Server with SFW in a Microsoft cluster
- Workflows for deploying SQL Server with SFW in a Microsoft cluster
- Configuring SFW storage
- Planning for SFW cluster disk groups and volumes
- Implementing a dynamic mirrored quorum resource
- Installing SQL Server and configuring resources
- Configuring disaster recovery
- Configuring Volume Replicator: Setting up an RDS
- Normal Volume Replicator operations and recovery procedures
- Appendix A. Configure InfoScale Storage in an existing Microsoft Failover Cluster
Quorum
The quorum resource maintains the cluster database, as well as critical recovery information, in a recovery log. The quorum resource must be available to all nodes through a SCSI or Fibre Channel bus. With Microsoft clustering alone, the quorum disk must be located on a single physical disk. However, with SFW, the quorum disk can be a mirrored volume that spans multiple disks and cluster nodes.
The quorum resource also determines ownership of the cluster. When a node that is controlling the cluster goes offline, other nodes use a challenge/defense protocol to determine which node can have control of the quorum resource and the cluster.