A full site goes offline
A power, network, storage or facility event can disrupt every dependent service. We help plan site-level recovery instead of treating each VM in isolation.
ENTERPRISE DISASTER RECOVERY & BUSINESS CONTINUITY
Recover the entire service. Not just the servers.
From application and database clusters to authentication, ELK, storage and networking, KTCHost helps businesses design and operate coordinated recovery between primary and DR locations.
Multi-site recoveryDependency-aware orchestrationValidated failover
RECOVERY ENGINEERINGREFERENCE WORKFLOW
PRIMARY LOCATIONProduction applicationsApplication · Identity · Database · Logs
↓Replication + runbooks↓
SECONDARY LOCATIONRecovery infrastructureStandby services · Data copies · Network
RECOVER → VALIDATE → REDIRECT TRAFFIC
WHY RECOVERY PLANS FAIL
Business continuity depends on the connections between systems.
A server can boot successfully while the application remains unavailable. A workable DR plan considers service dependencies, database state, authentication, networking, monitoring and the people authorized to make recovery decisions.
INTERACTIVE REFERENCE ARCHITECTURE
See a complete infrastructure failover.
Explore a simulated site disruption, dependency recovery, traffic cutover and controlled failback. This is a generic example—not a live customer environment.
KTCHOST / DISASTER RECOVERY ENGINEERING
Site-level recovery orchestration
Watch a complete application stack recover from a primary-site outage—not just replication between two servers.
NOT LIVE TELEMETRY
SCENARIO STEP 01 / 08
CLIENT REQUESTS / EXTERNAL TRAFFICUSER TRAFFIC ROUTED TO SITE A
↓ SITE A • ROUTING ACTIVE
↓ SITE B
SITE A / PRIMARY DATA CENTER
SERVING USERSProduction environment
01Traffic & edge
DNS / GSLBACTIVE
WAF / load balancerACTIVE
02Application
Web / API clusterACTIVE
Background workersACTIVE
03Identity & integration
Identity / SSOACTIVE
Message brokerACTIVE
04Data & storage
Database clusterACTIVE
Persistent storageACTIVE
05Observability
ELK / searchACTIVE
Metrics / alertingACTIVE
INTER-SITE LINK
DATA REPLICATIONDB / VM / STORAGE
PRIVATE CONNECTIVITYBACKUP / REPLICATIONRUNBOOK ORCHESTRATION
SITE B / RECOVERY DATA CENTER
RECOVERY CAPACITYDisaster recovery environment
01Traffic & edge
DNS / GSLBSTANDBY
WAF / load balancerSTANDBY
02Application
Web / API clusterSTANDBY
Background workersSTANDBY
03Identity & integration
Identity / SSOSTANDBY
Message brokerSTANDBY
04Data & storage
Database clusterSTANDBY
Persistent storageSTANDBY
05Observability
ELK / searchSTANDBY
Metrics / alertingSTANDBY
DR EXECUTION / EVENT LOG PRODUCTION HEALTHY
CURRENT RECOVERY ACTION
Normal operations
Primary site serves production traffic; database and VM replication maintain recovery copies.
TECHNICAL SEQUENCE
- 01Primary load balancer routes to Site A
- 02Database replication to Site B operational
- 03Recovery replicas available; no traffic at DR
OPERATIONAL RISKS
Four problems we help solve.
Servers recover, but applications fail
Database consistency, identity, DNS, API dependencies and startup order must be validated before users can return.
Replication exists, but recovery is untested
Snapshots and replicas alone do not prove that workloads can start and serve transactions. We build restore and validation procedures.
Failback becomes another outage
Returning to the primary location requires controlled synchronization, change planning, traffic management and rollback readiness.
FULL-STACK RECOVERY SCOPE
Six infrastructure layers. One recovery plan.
Technical recovery spans more than hypervisors and backups. Each layer needs defined dependencies and validation criteria.
Edge & traffic
DNS, global routing, reverse proxies, load balancers and ingress controls.
Application services
Web servers, API clusters, background workers, scheduled jobs and runtime configuration.
Identity & integration
SSO, authentication, service accounts, certificates, message brokers and integration gateways.
Data & storage
Database consistency, object and block storage, backup retention, replication and restore validation.
Observability
Log pipelines, ELK/OpenSearch, metrics, alerting, audit trails and recovery evidence.
Compute & networking
VMware, KVM, Proxmox, Linux hosts, VLANs, firewalls, routing and site connectivity.
RECOVERY OBJECTIVES
RPO and RTO must be designed—not assumed.
Recovery Point Objective (RPO) describes acceptable data loss. Recovery Time Objective (RTO) describes the target time to restore a service. Actual outcomes depend on architecture, dependencies, replication state and successful testing.
RPOData-loss tolerance
Defines how current recovered data must be.
RTOService restoration target
Defines the intended recovery window.
DELIVERY METHODOLOGY
From dependency mapping to recovery exercises.
01
Discover
Inventory servers, services, dependencies, data flows and recovery priorities.
02
Architect
Choose replication and backup methods, target topology, network and identity requirements.
03
Implement
Configure standby capacity, synchronization, access, routing and recovery runbooks.
04
Exercise
Test database and identity readiness, application functionality and traffic cutover.
05
Maintain
Review changes, replication exceptions, recovery evidence and failback procedures.
ENGAGEMENT OPTIONS
Start where your recovery program needs help.
DR Readiness Assessment
Review the current environment, application dependencies, backup coverage, recovery objectives and technical gaps.
Discuss this service ↗Multi-Site DR Implementation
Design and implement recovery infrastructure, replication, service sequencing, cutover and validation procedures.
Discuss this service ↗Managed Recovery Operations
Ongoing checks, backup and replication oversight, runbook maintenance, scheduled exercises and operational reviews.
Discuss this service ↗START WITH A TECHNICAL REVIEW
Talk to a DR engineer ↗Could your application survive a full site outage?
Share your infrastructure footprint, critical applications and current backup or replication approach. We can discuss a suitable assessment and recovery design.