clocktower@tools:~$cd /tools/infrastructure && ./raid-calculator
RAID Configuration
Min: 3, Max: 16
Optional drives for automatic replacement
Drive Layout
D
Drive 1: data
D
Drive 2: data
D
Drive 3: data
P
Drive 4: parity
Data
Mirror
Parity
Spare
Usable Capacity
6.0 TB
75.0% efficiency
Fault Tolerance
1
drive can fail
Total Cost
$400.00
$0.07/GB
Raw Capacity
8.0 TB
4 × 2.0 TB
RAID 5 (Distributed Parity)
Data and parity striped across all drives. Good balance of performance, capacity, and redundancy.
Performance Profile
Read: Good ((N-1)×)
Write: Moderate (parity overhead)
Use Case
Most popular RAID level. Great for file servers and general storage where one drive failure protection is sufficient.
RAID Level Comparison
| Level | Min Drives | Efficiency | Fault Tolerance | Performance |
|---|---|---|---|---|
RAID0 | 2 | 100.0% | 0 | Excellent (N×) |
RAID1 | 2 | 25.0% | 1 | Good (2×) |
RAID5 | 3 | 75.0% | 1 | Good ((N-1)×) |
RAID6 | 4 | 50.0% | 2 | Good ((N-2)×) |
RAID10 | 4 | 50.0% | 2 | Excellent (N×) |
RAID50 | 6 | 66.7% | 2 | Very Good |
RAID60 | 8 | 50.0% | 4 | Very Good |