Buying Guide
Best Storage for Business Backup
Business backups require high capacity, 24/7 reliability, and RAID compatibility. NAS-rated CMR drives from WD and Seagate are purpose-built for this — rated for continuous operation with vibration compensation for multi-drive enclosures.
Top picks — ranked by value score
| # | Product | Capacity | Read | Write | TBW | Warranty | Score | $/TB | Price | Buy |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  Seagate · HDD | 8TB | — | — | — | 2 years | 47.9 | $34.94/TB | $279.50 | Check Price on Amazon |
| 2 |  WD Red Plus 8TB NAS Hard DriveBest value WD · NAS Drive | 8TB | 210 MB/s | 210 MB/s | — | 3 years | 78.3 | $29.37/TB | $234.99 | Check Price on Amazon |
| 3 |  Seagate · NAS Drive | 8TB | 210 MB/s | 210 MB/s | — | 3 years | 75.1 | $37.50/TB | $299.99 | Check Price on Amazon |
| 4 |  WD · NAS Drive | 4TB | — | — | — | 3 years | 23.3 | $115.00/TB | $459.99 | Check Price on Amazon |
| 5 |  Toshiba · HDD | 4TB | — | — | — | 2 years | 55.3 | $28.25/TB | $112.99 | Check Price on Amazon |
| 6 |  Seagate · NAS Drive | 4TB | — | — | — | 3 years | 54.7 | $35.30/TB | $141.20 | Check Price on Amazon |
| 7 |  Western Digital · HDD | 4TB | — | — | — | 2 years | 36.8 | $45.00/TB | $179.99 | Check Price on Amazon |
| 8 |  Toshiba · NAS Drive | 4TB | — | — | — | 3 years | 58.3 | $26.25/TB | $104.99 | Check Price on Amazon |
Prices updated daily from Amazon. Value Score combines price/TB, speed, endurance, and warranty.
Frequently Asked Questions
How much storage does a small business need for backup?
The 3-2-1 rule: 3 copies of data, on 2 different media, with 1 offsite. For a 10-person office handling documents and email, 4TB is typically sufficient for on-site backup. For businesses storing video, design files, or databases, 8–12TB per backup destination is a realistic starting point.
Should businesses use NAS drives or desktop drives for backup?
NAS-rated drives (WD Red Plus, Seagate IronWolf) for any multi-drive backup system — they handle 24/7 operation and vibration from adjacent drives. Desktop drives can work for single-drive USB backups but aren't rated for continuous operation in NAS enclosures.