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Proper business data backup strategies and costs
Business IT9 September 20263 min read

Proper business data backup strategies and costs

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G

Gethyn Jones

CefniTech

Why most small firms get backup wrong

We see a shocking 63% of UK businesses lose critical data each year, yet only a fraction have a tested restore plan. The numbers change the conversation – it isn’t "if" you need a backup, it’s "when" and "how quickly" you can get back online.

What are the realistic backup options?

We usually narrow the field to four practical routes:

  1. External USB hard drive – plug‑and‑play, 1–5 TB drives from £50 to £120.
  2. Network‑attached storage (NAS) – a small rack you mount in the office, £200‑£600 for the box plus £100‑£150 per 4 TB drive.
  3. Cloud backup services – monthly fees of £5‑£15 per TB, e.g. Backblaze B2, Microsoft 365 backup, or Google Workspace.
  4. Hybrid (local + cloud) – combine a NAS with an automated cloud sync.

How do they stack up on price, speed and safety?

We ran the numbers on a typical 10‑user office with 5 TB of active data.

  • External drive: upfront £100, no recurring cost. Recovery is as fast as the USB 3.0 link (about 100 MB/s). But if ransomware encrypts the drive, you lose everything – it’s a single point of failure.
  • NAS: £500 for hardware and two 4 TB drives (RAID‑1 mirrors). Ongoing power ~£10/month. Restores over gigabit Ethernet hit ~120 MB/s, and RAID protects against a single drive death. You still need an off‑site copy for fire or theft.
  • Cloud only: £75‑£150 per month for 5 TB, no hardware to manage. Recovery depends on internet speed – a 50 Mbps line pulls ~6 MB/s, meaning a full restore can take many hours. However, the data sits in a separate data centre, immune to on‑premises ransomware.
  • Hybrid: Same NAS cost plus a cloud tier of 2 TB for £10‑£20/month. You get instant local restores for day‑to‑day loss and a secure off‑site copy for catastrophic events.

What about management effort?

We hear most owners complain about "set‑it‑and‑forget‑it". An external drive needs manual rotation every few weeks – easy to forget. A NAS can be scheduled to snapshot every night; most models have a web UI that we can configure while we’re on a call. Cloud services usually have an agent that runs in the background, but you must watch the storage quota.

Our firm recommendation

For the majority of SMEs we’d recommend the hybrid approach – a modest NAS for daily restores paired with a cheap cloud tier for disaster protection. It balances cost (about £600 upfront plus £15/month), speed (local restores in minutes), and resilience (off‑site copy protects against fire, theft or ransomware). We can set up the NAS, schedule the sync to cloud & Microsoft 365 and test the restore process as part of our business IT support package.

If you already have a NAS, adding a cloud backup costs as little as £10 a month – a small price for peace of mind. If you’re on a shoestring, start with a good external drive but plan to migrate to hybrid within 6‑12 months.

We also advise a yearly data recovery check – we’ll try to retrieve a test file from your backup to confirm the chain works before you actually need it.

Stuck with this on your own machine? Get in touch with CefniTech and we'll sort it — plain English, no call-out drama.

Frequently Asked Questions

How often should I back up my business data?

We recommend daily incremental backups with a full weekly snapshot. That way you lose at most a day’s work and you have a clean copy to fall back on if something goes wrong.

Can I rely on just a cloud backup for ransomware protection?

Cloud backup adds a strong layer of safety because the files sit off‑site, but you still need a local copy for fast restores. A hybrid setup gives you both speed and ransomware resilience.

What is the difference between RAID‑1 and RAID‑5 for a NAS?

RAID‑1 mirrors data on two drives, so you can survive a single drive failure and restore instantly. RAID‑5 spreads data across three or more drives with parity, offering more capacity but a slower rebuild if a drive dies.

Do I need to encrypt my backups?

Yes, especially for cloud storage and any portable drive. Most modern NAS units and cloud agents support AES‑256 encryption, which we configure as part of the backup setup.

Source & Attribution

This article was inspired by content from Original Article. Content has been fully rewritten by CefniTech.

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