NAS Deployment, Shares, Permissions and Capacity Playbook

Start with data ownership

Define departments, applications and owners before creating shares. A share named "Data" that everyone can modify becomes difficult to secure, audit and migrate.

Share design

• Use meaningful share names aligned to business ownership.
• Grant access to groups, not individual users where possible.
• Separate read-only reference data from collaborative write data.
• Separate backup repositories from ordinary user shares.
• Document service accounts and applications that depend on a share.

Permissions

Use the principle of least privilege. Avoid giving broad administrative rights to solve a file-access problem. When an inherited permission behaves unexpectedly, trace the effective permission from group membership, share permission and filesystem ACL rather than adding another allow.

Capacity planning

Plan usable capacity after RAID, filesystem overhead, snapshots and retention. Track growth rate. A volume that is nearly full can suffer operational problems even though the RAID itself is healthy.

Snapshots are not a complete backup

Snapshots can provide fast point-in-time recovery on supported filesystems, but they remain dependent on the storage system. Keep an independent backup for events that affect the NAS itself.

Data scrubbing

Synology documents data scrubbing as a maintenance process that can include filesystem checksum verification and RAID consistency work on supported configurations. Schedule it according to the model, workload and vendor guidance, and do not start heavy maintenance blindly during peak production.

Commissioning

1. Create storage pool and volume.
2. Create groups and shares.
3. Apply least-privilege access.
4. Test user read/write and denied access.
5. Configure snapshots/backup.
6. Configure alerts.
7. Test restore from backup, not only backup completion.

Client benefit

A properly structured NAS makes access predictable, reduces accidental exposure, supports growth and makes restore procedures testable before a real incident.

Identity integration

If the NAS joins a directory service, define which directory groups map to which shares. Test a normal user, a privileged user and a user who should be denied. Do not validate permissions only with an administrator account.

SMB/NFS considerations

SMB and NFS use different identity and permission models. When the same data is exposed through multiple protocols, verify how UID/GID, ACLs, ownership and locking interact on the chosen NAS platform.

Capacity alerts

Set warning thresholds early enough that growth can be managed before a volume is critically full. Capacity planning should include snapshot retention, backup repositories, application growth and expansion method.

Drive replacement

For a degraded redundant pool, identify the failed drive by slot and serial information before removal. Replace only what the vendor procedure calls for, then monitor rebuild/repair to completion before removing another member.

SMB share design example

A useful departmental design might separate Finance, Projects, Public-Read and Backups rather than creating one root share with folders beneath it. This allows different snapshot schedules, quotas, permissions and backup policies by business purpose.

Quotas

Quotas can prevent one user or team from consuming all available capacity. They are an operational control, not a substitute for monitoring. Set them from business expectations and leave enough space for snapshots, system metadata and growth.

Recycle bin and previous versions

Where the platform supports them, these features help with routine accidental deletion. They do not replace protected snapshots or backup because users, malware or administrators may still affect the same storage system.

NAS network design

For high-throughput NAS, verify link speed, LACP or SMB multichannel support where applicable, switch uplink capacity and client capability. More NAS ports do not automatically make one file transfer faster. The protocol and host implementation determine how multiple links are used.

Maintenance window

Scrubbing, RAID repair and backup can compete for disk and CPU resources. Schedule intensive maintenance with knowledge of production workload and monitor application latency while it runs.