RAID 0 vs RAID 1 vs RAID 5 vs RAID 6 vs RAID 10 Usable Capacity & Fault Matrix
Enterprise NAS and ZFS array comparison covering usable terabytes, disk failure tolerance, and random write IOPS penalties. (8 × 16TB Drives in RAID 10: 64 TB Usable (50% Parity) | 8 × 16TB Drives in RAID 6: 96 TB U)
Reviewed by: Alexei Volkov • Principal Systems & Cloud Infrastructure Architect
Methodology: Verified Formula
Key Quantitative Takeaway
8 × 16TB Drives in RAID 10: 64 TB Usable (50% Parity) | 8 × 16TB Drives in RAID 6: 96 TB Usable (2-Disk Fault) | Write Penalty (RAID 10 vs 6): 2x IOPS vs 6x IOPS Penalty
Presets:
RAID 5 Usable Capacity (1-Drive Parity)
40.0 TB (36.4 TiB)
RAID 6 Usable (2-Drive Parity)
32.0 TB
RAID 10 Usable (Mirrored Stripes)
24.0 TB (Raw: 48 TB)
Live Sensitivity Scale (Number of Hard Drives / SSDs)
Output Comparison
0.75× Conservative
32.0 TB (29.1 TiB)
1.00× Active
40.0 TB (36.4 TiB)
1.50× Aggressive
64.0 TB (58.2 TiB)
True OS binary capacity (TiB) is ~90.95% of decimal TB.
In-Depth Analysis — RAID 0 vs RAID 1 vs RAID 5 vs RAID 6 vs RAID 10
Enterprise NAS and ZFS array comparison covering usable terabytes, disk failure tolerance, and random write IOPS penalties.
Use the interactive RAID 0, 1, 5, 6 & 10 Usable Storage Capacity Calculator above to model custom production workloads and export CSV benchmark reports.
Need to run custom scenarios from scratch? Open the master RAID 0, 1, 5, 6 & 10 Usable Storage Capacity Calculator →
Scenario Comparison & Benchmark Table (RAID Storage Calculator)
Compare how scaling Number of Hard Drives / SSDs affects your output (click any row to load those values into the calculator above):
| Number of Hard Drives / SSDs | RAID 5 Usable Capacity (1-Drive Parity) | RAID 6 Usable (2-Drive Parity) | RAID 10 Usable (Mirrored Stripes) |
|---|---|---|---|
| 3 | 16.0 TB (14.6 TiB) | 8.0 TB | 8.0 TB (Raw: 24 TB) |
| 5 | 32.0 TB (29.1 TiB) | 24.0 TB | 16.0 TB (Raw: 40 TB) |
| 6 (Baseline) | 40.0 TB (36.4 TiB) | 32.0 TB | 24.0 TB (Raw: 48 TB) |
| 8 | 56.0 TB (50.9 TiB) | 48.0 TB | 32.0 TB (Raw: 64 TB) |
| 9 | 64.0 TB (58.2 TiB) | 56.0 TB | 32.0 TB (Raw: 72 TB) |
| 12 | 88.0 TB (80.0 TiB) | 80.0 TB | 48.0 TB (Raw: 96 TB) |
Mathematical Formula & Step-by-Step Guide
Primary mathematical equation used by this model:
RAID 5 = (N - 1) × Size; RAID 6 = (N - 2) × Size; RAID 10 = (N / 2) × Size
- Set Number of Hard Drives / SSDs and Single Drive Capacity (TB) (or load Lower (4), Baseline (6), Higher (9) with one click) using the numeric fields or synchronized sliders.
- Compare the primary output against the secondary metrics and live visual ratio bar.
- Scan the 6-tier RAID Storage Calculator Reference Benchmark Table below or click Download CSV / Print PDF to save your analysis.
Primary Standards & References: IETF RFC 8259 (JSON), RFC 4648 (Base64), RFC 9562 (UUIDv4), IEEE 802.3 / CIDR RFC 4632, POSIX.1-2017 File Permissions & Official 2026 LLM Tokenizer Pricing
All encoding, formatting, and cryptographic operations execute 100% locally in your browser via Web Crypto & V8 APIs—zero payload data leaves your device.
All encoding, formatting, and cryptographic operations execute 100% locally in your browser via Web Crypto & V8 APIs—zero payload data leaves your device.
Frequently Asked Questions — RAID Storage Calculator
How do you calculate 8×16TB NAS RAID Comparison (8 × 16TB Drives in RAID 5, RAID 6 & RAID 10)?
An 8-bay NAS populated with 16TB drives yields 112 TB usable in RAID 5 (1-drive parity), 96 TB usable in RAID 6 (2-drive parity), and 64 TB usable in RAID 10 (4x read/2x write speed). You can also open our dedicated guide (8×16TB NAS RAID Comparison) or click the preset buttons above to test this exact configuration interactively.
How do I optimize Number of Hard Drives / SSDs and Single Drive Capacity (TB) for better RAID Storage Calculator performance?
At the default benchmark (Number of Hard Drives / SSDs: 6, Single Drive Capacity (TB): 8), balancing both inputs prevents bottlenecks and wasted budget. Test the built-in presets above to compare standard industry tiers.
What technical specification backs the RAID Storage Calculator calculation?
This tool implements RAID 5 = (N - 1) × Size; RAID 6 = (N - 2) × Size; RAID 10 = (N / 2) × Size in accordance with IETF RFC 8259 (JSON), RFC 4648 (Base64), RFC 9562 (UUIDv4), IEEE 802.3 / CIDR RFC 4632, POSIX.1-2017 File Permissions & Official 2026 LLM Tokenizer Pricing and is audited by Alexei Volkov • Principal Systems & Cloud Infrastructure Architect. You can export the full benchmark table as CSV or share a pre-filled URL parameter link with your team.