Pro-Owner perspective: This document frames your systems as a technical estate — an asset to be stewarded, documented, and bequeathed. Treat these steps as craftsmanship: protect the continuity, auditability, and transferability of your digital legacy.

Raid Is Not A Backup

The 60-second version

RAID (Redundant Array of Independent Disks) protects against hardware failure, not data loss. It mirrors or stripes data across drives for performance or redundancy, but it doesn’t protect against deletion, corruption, ransomware, or human error. You still need backups.

What this solves (in real business terms)

Understanding RAID vs. backups helps you:

• Avoid false security: Know RAID alone won’t save your data.
• Plan smarter: Use RAID for uptime and backups for recovery.
• Save money: Don’t overspend on RAID thinking it replaces backups.
• Meet compliance: Backups are required for data retention laws.

What it costs (honest ranges)

RAID Costs

• Hardware RAID (controller + drives): $500–$2,000 for small setups.
• Software RAID (built-in): Free (but limited features).

Backup Costs

• Local backups: $100–$500 per TB (external drives/NAS).
• Cloud backups: $5–$30 per TB/month.

Total Estimates

• Small business (1–5TB): $1,000–$3,000/year for RAID + backups.
• Mid-size (5–20TB): $5,000–$15,000/year.

What can go wrong

• RAID failure: Multiple drives fail simultaneously.
• No backups: Data is lost to deletion, corruption, or ransomware.
• Slow restores: Rebuilding RAID arrays takes hours or days.
• Human error: Files are deleted or overwritten, and RAID can’t recover them.

Vendor questions (copy/paste)

1. Do you sell RAID as a backup solution? (If yes, walk away.)
2. What’s your recommended backup strategy alongside RAID?
3. How quickly can I restore data from backups (not RAID)?
4. Do you offer automated backup testing?
5. What’s your uptime guarantee for RAID + backups?

Minimum viable implementation

Start with:

1. RAID 1 or 5: For uptime (mirroring or striping + parity).
2. 3-2-1 backups: 3 copies, 2 media types, 1 offsite.
3. Automated backups: Daily, with alerts for failures.
4. Monthly restore tests: Pick a file and restore it.

When to hire help

Bring in experts if:

• You’re unsure if your RAID is properly configured.
• You lack backups or haven’t tested restores.
• You’re in a regulated industry (healthcare, finance).
• You’ve lost data before due to RAID misunderstandings.