RAID 60 Capacity Formula:
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Definition: This calculator estimates the usable storage capacity in a RAID 60 array based on drive configuration.
Purpose: It helps IT professionals and storage administrators plan their RAID configurations and understand storage efficiency.
The calculator uses the formula:
Where:
Explanation: The formula accounts for the dual parity protection of RAID 6 across multiple groups (RAID 0).
Details: Proper capacity planning ensures optimal storage utilization while maintaining redundancy for data protection.
Tips: Enter the total number of drives, parity drives per group (default 2), drive size in TB, and number of groups (default 2).
Q1: What is RAID 60?
A: RAID 60 combines RAID 6 (dual parity) with RAID 0 (striping) for both redundancy and performance.
Q2: Why use 2M in the formula?
A: RAID 6 uses two parity drives per group for double fault tolerance.
Q3: What's a typical group size for RAID 60?
A: Common configurations use 6-12 drives per RAID 6 group with 2-4 groups.
Q4: How does this differ from RAID 50?
A: RAID 50 uses single parity (RAID 5) groups, while RAID 60 uses dual parity (RAID 6) groups.
Q5: Does this account for formatting overhead?
A: No, the calculation shows raw capacity before filesystem overhead (typically 5-10% less usable space).