NFS Consulting

Zwiegnet provides deep NFS expertise across modern Linux distributions, legacy and current Oracle Solaris, FreeBSD, and other Unix variants. We help organizations deploy reliable, secure, and high-performance network file sharing for clustered applications, home directories, shared storage, and cross-platform environments.

Our NFS services include:

• Server & Client Configuration – NFSv3, NFSv4, and NFSv4.1/v4.2 setup on Linux (nfs-kernel-server), Solaris (sharectl/ZFS sharing), FreeBSD, and mixed environments.
• Performance Tuning – Async/sync options, read/write sizes, cache settings, mount options (rsize/wsize, noatime, etc.), and kernel tuning for high-throughput workloads.
• Security Hardening – Kerberos (sec=krb5/krb5i/krb5p), NFSv4 ACLs, export restrictions (squash, root_squash), firewall rules, and sec=sys with UID/GID mapping.
• Identity Mapping & Authentication – Integration with LDAP, NIS, or idmapd for consistent UID/GID across heterogeneous systems (Linux ↔ Solaris ↔ BSD).
• High Availability & Failover – DRBD + NFS, CTDB with clustered filesystems, or Solaris Cluster resource groups for failover NFS servers.
• ZFS & NFS Integration – Optimized ZFS sharing on Solaris and Linux (ZFS on Linux), snapshot-based exports, and delegation.
• pNFS & Parallel NFS – Configuration for scalable parallel access in large storage environments.
• Monitoring & Logging – NFS stats, rpcinfo monitoring, Prometheus exporters, and alert setup for stale mounts or performance issues.
• Migration & Interoperability – Transition from older NFS versions, cross-platform mounts (Linux client to Solaris server and vice versa), or migration to alternatives when needed.
• Troubleshooting & Break-Fix – Resolution of stale file handles, lockd/statd issues, mount failures, permission problems, and performance bottlenecks.

Ideal for shared storage in HPC, application clusters, user home directories, or any environment requiring robust network file access across Unix/Linux variants.

Located between Madison and Milwaukee, Wisconsin since 2009 — direct access to experienced NFS engineers with decades of cross-platform Unix experience.