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NAS Storage for Business: Shared File Storage Explained

Network-attached storage (NAS) gives your teams one central place to store and share files over the network, with mapped drives, shared folders and permissions controlled from one system.

Fortuna Data supplies NAS storage for UK organisations, from small office NAS to enterprise unified storage and virtual NAS. We have been helping businesses with storage since 1994.

What is NAS storage?

NAS stands for network-attached storage. It is a storage system connected to your network that shares files with users and servers, so everyone works from the same folders instead of saving to their own computers.

Users see NAS storage as mapped drives or shared folders. Access is controlled with permissions, usually linked to Microsoft Active Directory, so people only see the files they should.

How NAS works

  • File sharing protocols: SMB for Windows users and NFS for Linux and Unix systems
  • Drive protection: RAID spreads data across several drives so the NAS keeps working if a drive fails
  • Permissions: folder and file access managed with your existing user accounts
  • Snapshots: point-in-time copies so users can get back a deleted or changed file

NAS vs SAN vs DAS

 NASSANDAS
SharesFilesBlocks (volumes)Blocks
ConnectionNormal network (LAN)Dedicated storage networkDirect to one server
Typical useFile shares, home folders, archives, backupsDatabases, virtual machine clustersSingle servers, small sites

Many enterprise systems are unified: they provide NAS file shares and SAN block storage from the same array. Read more: SAN vs NAS and SAN storage.

Running out of space on your NAS?

Tell us how much data you store, how many users you have and how fast it is growing, and we will recommend the right NAS.

NAS storage we supply

QNAP NAS

Desktop and rackmount NAS for offices and businesses, from compact systems to large rackmount models.

See QNAP NAS

Lenovo ThinkSystem DM series

Unified storage arrays powered by NetApp ONTAP, providing file and block storage from one system for larger organisations.

See Lenovo ThinkSystem storage

euroNAS

Software that turns standard servers into NAS or SAN storage, with high availability, snapshots and replication.

See euroNAS

Vawlt Virtual NAS

Keep the same shares and mapped drives, with data encrypted and stored across locations you choose, so capacity grows without new hardware.

Virtual NAS explained

How to choose a NAS

Questions to answer first

  • How much data do you store now, and how fast is it growing?
  • How many users and sites need access?
  • Do you need file storage only, or block storage for servers as well?
  • How quickly would you need to recover if the NAS failed?

Features to look for

  • RAID and hot-swap drives
  • Snapshots for quick file recovery
  • Integration with Active Directory for permissions
  • Room to add capacity without replacing the system
  • Replication to a second site or the cloud
  • A support contract that covers the life of the system

Protecting the data on your NAS

RAID and snapshots protect against a failed drive or an accidental deletion, but they are not a backup. If ransomware encrypts the NAS, or the system itself fails, you need a separate copy.

Follow the 3-2-1 rule: three copies of your data, on two types of media, with one copy off-site. Many businesses back up their NAS to tape or the cloud.

Read more: Data protection software and LTO tape

NAS storage FAQs

What is NAS storage?

Network-attached storage (NAS) is a storage system connected to your network that shares files with users and servers through shared folders and mapped drives.

What is the difference between NAS and SAN?

NAS shares files over a normal network. A SAN shares block storage over a dedicated storage network and is used for databases and virtual machines.

Is a NAS a backup?

No. RAID and snapshots help with drive failures and deleted files, but you still need a separate backup copy, ideally off-site.

Can a NAS work with Active Directory?

Yes. Business NAS systems can use Active Directory so you manage file permissions with your existing user accounts.

What is a virtual NAS?

A virtual NAS keeps the same file shares for users, but stores the data across cloud or on-premises locations instead of one box. See Virtual NAS explained.

How much does NAS storage cost?

It depends on capacity, performance, the number of users and support. Contact us with your requirements and we will provide a quote.

Looking for NAS storage?

Speak to a storage specialist. We will help you compare options and give you a clear UK quote.

Prefer email? Write to solutions@data-storage.uk

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