Case Studies
Industry
Solution
Case Study — City Government
1:1 HA for MSSQL Server in Windows environment
Background
Existing DB ran on a single Windows Server 2008 R2, causing service interruption until recovery from server failure
Challenge
Complete service outage on server failure until user or engineer intervention
Solution
OS upgrade to Windows Server 2019, then 1:1 HA with local replication using CoreLab Cluster
Results
Failover within ~20 seconds on DB server failure; automatic recovery to standby server ensures service availability
Case Study — Public Institution
1:1 HA infrastructure proposal for new servers
Background
Need for dedicated DB servers and redundancy in an air-gapped network environment
Challenge
Basic DB server load necessitates dedicated DB separation for stability
Solution
Proposed 1:1 HA setup on new servers. After HA deployment, migrated DB from existing servers via backup and restore
Results
Workload distributed to newly deployed servers; redundancy configuration improved availability and operational efficiency
Case Study — University
Redundancy proposal for Distance Learning Institute
Background
Distance Learning Institute operated on a single server
Challenge
DB server failure would have major impact; redundancy needed within budget constraints
Solution
CoreLab Cluster HA configuration leveraging existing hardware with minimal additional server investment
Results
Achieved high availability while preserving existing infrastructure investment; maximum value within budget
Case Study — Financial Institution
1:1 HA in virtualized environment with under-5-minute recovery
Background
Need for high availability of VMs in a VMware virtualized environment
Challenge
Requirement for service-level failover rather than VM reboot
Solution
Configured 1:1 hot standby and replication between VMs running on separate virtualization hosts
Results
Service recovery within 1 minute of VM failure on primary host, meeting downtime requirements
Case Study — Enterprise
1:1 HA in virtualized environment with under-5-minute recovery
Background
Need for high availability of VMs in a Hyper-V virtualized environment
Challenge
Requirement for service-level failover rather than VM reboot
Solution
Configured 1:1 hot standby and replication between VMs running on separate virtualization hosts
Results
Service recovery within 1 minute of VM failure on primary host, meeting downtime requirements
Case Study — Healthcare Institution
High availability for medical information systems
Background
HIS and other medical information systems running on a single server
Challenge
Server failure directly impacts patient care; 24/7 operation required
Solution
1:1 HA for HIS server using CoreLab Cluster with shared storage-based automatic failover
Results
Achieved 99.99% availability for medical information systems; uninterrupted clinical operations
Case Study — P&I Insurance
Server clustering in shared storage environment
Background
Windows server environment with external disk-based shared storage
Challenge
Single server on shared storage causes service outage on failure
Solution
1:1 HA using shared storage with CoreLab Cluster failure detection and auto-failover
Results
Continuous operation with shared storage HA; recovery within seconds of server failure
Case Study — Securities Firm
High availability for electronic fax system
Background
Electronic fax system running on a single server
Challenge
Single server operation risks service disruption; high availability required
Solution
CoreLab Cluster-based redundancy with zero-downtime patching and automatic failover
Results
Improved satisfaction with zero-downtime software patching; in-business-hours maintenance reduced overnight engineer workloads
Case Study — Insurance Company
High availability for groupware system
Background
Internal groupware system running on a single Linux server
Challenge
Service disruption causes delays in employee work processing
Solution
CoreLab Cluster HA for groupware system
Results
~10 second failover on service failure; uninterrupted operations and improved employee satisfaction
Case Study — Mutual Aid Association
DR setup from single Windows Server environment
Background
Core business system running on single Windows Server 2016
Challenge
Risk of complete business interruption on single server failure; no DR system in place
Solution
CoreLab Cluster DR setup between primary and backup centers with real-time replication
Results
Rapid recovery to backup center on disaster; minimized data loss
Case Study — Enterprise
ERP system server clustering
Background
Web-based ERP running on a single Windows server
Challenge
ERP failure paralyzes all company operations; reliance on nightly backups only
Solution
1:1 HA for ERP server with CoreLab Cluster and real-time sync
Results
Continuous ERP operation; 90%+ reduction in annual downtime
Case Study — Financial Institution
DR setup from single Linux Server environment
Background
Core business system running on single CentOS 7 server
Challenge
Risk of complete business interruption on single server failure; no DR system in place
Solution
OS upgrade to Rocky Linux 9, then CoreLab Cluster Linux-based DR between primary and backup centers with real-time replication
Results
100Mbps inter-center bandwidth enables rapid recovery to backup center; minimized data loss
Proposal — Public Institution
High availability proposal for customer-facing reservation management system
Background
Customer reservation management system operating on a single server
Challenge
Server failure during monthly reservation peaks causes major losses; scalability also needed
Solution
CoreLab Cluster HA configuration with a scalable architecture for future expansion
Results
Reservation system operational continuity ensured; scalable foundation established
Case Study — Financial Institution
Integrated HA/DR for internal web-based business system
Background
Primary and backup centers running on an existing cluster solution
Challenge
High license costs and management complexity of the existing solution
Solution
CoreLab Cluster HA/DR integration with legacy system migration support
Results
Service recovery within 1 hour of primary center failure; reduced operational losses
Case Study — Research Institute
Clustering for supercomputer management/integration system
Background
Supercomputer management and integration system at a research institute
Challenge
Management system failure drastically reduces supercomputer utilization
Solution
CoreLab Cluster HA applied to the management system
Results
Supercomputer utilization maintained above 95%; management system availability ensured
Case Study — Enterprise
VMware to Proxmox VE virtualization migration
Background
VMware-based virtualization environment with license cost burden and management complexity
Challenge
Need to reduce VMware license renewal costs; zero-downtime VM migration required
Solution
Proxmox VE and VirtOn deployment with VMware VM migration for rapid infrastructure setup
Results
70% reduction in virtualization license costs; flexible scaling with open-source infrastructure
Case Study — Overseas Research Institute
High availability setup for LLM-based AI inference servers
Background
Need to build a system for LLM-based vibe coding and PyTorch/TensorFlow testing for multiple users
Challenge
Provide inference server services to multiple users with 24/7 operation required
Solution
Inference server deployment with vLLM, llama.cpp, and Furiosa LLM. Master/Worker node and model file sharing system setup
Results
AI inference services operational; automatic failover on server failure