RAID 5Storage Array Configurator
RAID Storage Capacity &
Speed Configurator in Norway
Calculate exact usable storage, estimated read/write throughput, parity overhead, and drive fault tolerance thresholds for all major RAID levels.
Array Configuration
4 drives
4 TB
RAID 5
Distributed parity — balanced performance + redundancy.
NAS arrays, workstation storage, media servers.
Usable Capacity12 TB
Parity Overhead4 TB
Storage Efficiency75%
Drive Fault Tolerance1 drive
Estimated Sequential Throughput (HDD baseline)
Sequential Read360 MB/s
Sequential Write140 MB/s
75%
Capacity Efficiency
16 TB raw → 12 TB usable
4 TB used for parity
All RAID Levels — 4× 4TB Comparison
| RAID | Usable | Efficiency | Fault Tolerance | Read Speed | Write Speed | Best For |
|---|---|---|---|---|---|---|
| RAID 0 | 16 TB | 100% | None | 400 MB/s | 400 MB/s | Scratch disks |
| RAID 1 | 4 TB | 25% | 1 drive | 300 MB/s | 180 MB/s | OS drives |
| RAID 5◀ | 12 TB | 75% | 1 drive | 360 MB/s | 140 MB/s | NAS arrays |
| RAID 6 | 8 TB | 50% | 2 drives | 320 MB/s | 100 MB/s | Enterprise storage |
| RAID 10 | 8 TB | 50% | 1 drive | 400 MB/s | 360 MB/s | Databases |
Choosing the Right RAID Level for Workstations & Servers in Norway
RAID (Redundant Array of Independent Disks) is a storage virtualization technology that distributes data across multiple drives for improved performance, fault tolerance, or both. For PC builders and workstation users in Norway, understanding the capacity and speed trade-offs of each RAID level is essential before investing in a multi-drive setup.
Frequently Asked Questions
What is the difference between RAID 5 and RAID 6?▼
RAID 5 uses single distributed parity and can survive 1 drive failure. RAID 6 uses dual parity and survives 2 simultaneous drive failures, at the cost of more overhead and lower write speeds.
Does RAID replace backups?▼
No. RAID protects against drive failure but not against accidental deletion, ransomware, fire, or theft. Always maintain separate offline backups using the 3-2-1 rule.
Which RAID is best for a home NAS in Norway?▼
RAID 5 with 4+ drives offers the best balance of capacity, performance, and redundancy for home NAS systems. For critical data, RAID 6 adds an extra safety margin.