NAS vs SAN for Yachts

This article applies to yachts using shared storage for technical documents, media libraries, owner office files, backups, CCTV exports, virtualization, AV servers, or management-company workflows.

Applicability depends on data sensitivity, performance need, redundancy, backup design, physical space, support capability, and whether the storage connects to AV, CCTV, owner office, security, or operational systems.

• NAS is file storage; SAN is block storage presented to servers.
• Most yachts need a well-managed NAS before they need a SAN.
• Storage design must include backup, access control, snapshots, and recovery testing.
• Media storage, business files, CCTV exports, and VM disks should not be mixed casually.

A NAS is network attached storage. It presents shared folders over the network using protocols such as SMB or NFS. Users and systems see folders, permissions, and files.

NAS is common on yachts because it is practical for:

• technical documents,
• crew shared files,
• owner office folders,
• media libraries,
• software installers,
• config backups,
• CCTV exports,
• local backups.

The advantage is simplicity. A good NAS can provide shared folders, permissions, snapshots, replication, disk health monitoring, and backup targets. The risk is treating it like a magic hard drive. If everyone has admin access, snapshots are not enabled, backups are not tested, and folders are not owned, the NAS becomes a single point of confusion.

A SAN is storage presented at block level to servers. With iSCSI, a server sees a remote storage volume as if it were a disk. Fibre Channel is another SAN approach, though less common on ordinary yacht networks.

SAN or iSCSI storage can make sense where the yacht has virtualization hosts, clustered servers, large databases, or specialist systems needing block storage. It is more technical than file sharing. It needs careful network design, access control, multipath planning where used, performance monitoring, and backup strategy.

The key difference: NAS shares files; SAN provides disks to servers.

Use NAS for most yacht shared-file needs. It is usually the right first answer for documentation, media, backups, software, drawings, and admin files.

Consider SAN or iSCSI where:

• virtualization hosts need shared storage,
• a server application requires block storage,
• performance and redundancy justify the complexity,
• there is competent support to manage it.

Avoid using the same storage pool with no separation for owner office data, media, CCTV, backups, and VM disks. Those workloads have different access, retention, performance, and privacy requirements.

A yacht keeps AV media, network drawings, crew documents, CCTV exports, and VM backups on one NAS share called `Shared`. A ransomware event or accidental deletion would affect everything. Nobody knows whether snapshots are enabled.

The better design separates shares by purpose, applies role-based permissions, enables snapshots, backs up critical folders, monitors disk health, and documents who owns each dataset.

• What data lives on the device?
• Who owns each share or volume?
• Are permissions role-based or everyone-full-control?
• Are snapshots enabled?
• Is there an offline, cloud, or replicated backup?
• Has restore been tested?
• Are admin accounts protected by MFA where supported?
• Are firmware and security updates managed?
• Are media and business data separated?
• Is storage capacity monitored?