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StashRaid

Storage Parameters

Usable Capacity

12 TB

Fault Tolerance

4

Array Resilience

Architecture

RAID 5 • Parity

Fault Tolerance

1 Concurrent Failures Allowed

Current Configuration

RAID 5 (Parity)

12 TB Usable

Total RAW: 16 TB

Disk 01DATA
Disk 02DATA
Disk 03DATA
Disk 04PARITY

Total Drives

4 x 4 TB

Efficiency

75% Utilized

Usable: 12 TBWasted to redundancy: 4 TB

Pros & Cons

  • PRO: Good balance of capacity/speed/safety

  • PRO: Cost-effective redundancy

  • CON: Slower writes due to parity calculation

    This setup prioritizes redundancy but has associated performance or capacity costs.

RAID Level Comparison

Comparing all 13 RAID levels with 4 drives at 4 TB each. Change these values in the calculator and return here to see updated numbers.

All Levels Compared

LevelTypeUsableWastedFault Tol.ReadWriteMin
RAID 0Striping16 TB0 Bytes04.0x4.0x2
RAID 1Mirroring4 TB12 TB34.0x1.0x2
RAID 5Parity12 TB4 TB14.0x1.0x3
RAID 6Dual Parity8 TB8 TB24.0x0.7x4
RAID 10Mirroring + Striping8 TB8 TB1/≤24.0x2.0x4
RAID 50RAID 5 + 0Need 6+-04.0x0.5x6
RAID 60RAID 6 + 0Need 8+-04.0x0.3x8
RAID JBODJust a Bunch of Disks16 TB0 Bytes01.0x1.0x1
SHRSynology Hybrid RAID12 TB4 TB14.0x0.9x2
SHR2Synology Hybrid RAID (Dual)8 TB8 TB24.0x0.6x4
Z1Single Parity (ZFS)12 TB4 TB14.0x1.3x3
Z2Double Parity (ZFS)8 TB8 TB24.0x0.8x4
Z3Triple Parity (ZFS)Need 5+-04.0x0.6x5

Read multiplier = N (all spindles). Write multiplier = N / penalty. RAID 5 penalty 4×, RAID 6 penalty 6×, ZFS Z1 penalty 3×, SHR penalty 4.5×. Full methodology: Performance Methodology.