Solaris CDOM / LDOM / Zones Administration

Even as Oracle shifts focus away from Solaris, many mission-critical systems continue to run on it — often with SPARC hardware or legacy x86 deployments. Zwiegnet provides deep, hands-on expertise to maintain, optimize, secure, and eventually migrate these environments.

Our services cover the full Solaris virtualization and container stack:

• Control Domain (CDOM) Administration – Management of the primary/root domain, ILOM integration, firmware updates, hardware monitoring, root domain configuration, and stability hardening.
• Logical Domains (LDOM) / Oracle VM Server for SPARC – Design and management of guest domains; CPU/memory allocation, virtual I/O (vDisk, vNIC, direct I/O), live migration, dynamic reconfiguration, and resource capping.
• Solaris Zones & Branded Zones – Creation, cloning, migration (cold/live), resource management (CPU, memory, network), global/local zone administration, and branded zone support for legacy applications.
• Performance Tuning & Optimization – Kernel tuning, ZFS ARC/L2ARC/SLOG optimization, network stack (TCP window scaling, jumbo frames), interrupt steering, and workload-specific adjustments for high-throughput environments.
• Security Hardening & Compliance – RBAC, privileges, auditing (BSM), IPFilter rules, Solaris Trusted Extensions, STIG compliance, and TLS/SSL configuration for secure operations.
• High Availability & Clustering – Integration with Oracle Solaris Cluster, live guest migration, ZFS replication, and failover strategies for mission-critical workloads.
• Backup, Recovery & Disaster Planning – ZFS snapshots/send/receive, ufsdump, Oracle Secure Backup, and tested DR procedures with rollback plans.
• Migration & Modernization Planning – Assess current Solaris estate, plan phased transitions to Linux (zones → containers, LDOM → KVM/VMware), and execute low-risk migrations.
• Troubleshooting & Emergency Support – Rapid diagnosis of panics, domain hangs, ZFS issues, hardware faults, and performance bottlenecks.

Ideal for: legacy financial systems, telco infrastructure, government/defense applications, research labs, and enterprises still relying on Solaris SPARC or x86 with active support needs or in end-of-life mode.

Located between Madison and Milwaukee, Wisconsin since 2009 — direct access to experienced Solaris engineers who understand the platform deeply.