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# 🔐 A Guide to RAID Array Types – Ranked by Data Security


When setting up your ggRock system, choosing the right RAID type is crucial for balancing **data protection**, **performance**, and **storage capacity**. Below is a ranked list of popular RAID types, sorted by how well they protect your data – complete with ⭐ star ratings for quick reference!

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## 🥇 RAID 10 – Mirrored + Striped

**⭐⭐⭐⭐⭐ Data Security**

* **Minimum Disks**: 4 (even number)
* **Striping**: ✅ Yes (for performance)
* **Mirroring**: ✅ Yes (for redundancy)
* **Fault Tolerance**: Can survive multiple disk failures (if not from the same mirrored pair)
* **Capacity**: 50% of total disk space
* **Best For**: Critical systems needing top-tier performance *and* redundancy

💡 Choose **RAID 10** for the best of both worlds—performance *and* protection.

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## 🥈 RAID 7 / RAID-Z3 – Triple Parity

**⭐⭐⭐⭐⭐ Data Security**

* **Minimum Disks**: 4
* **Striping**: ✅ Yes
* **Parity**: Triple distributed
* **Fault Tolerance**: Survives **3 disk** failures
* **Capacity**: Total disks - 3
* **Best For**: Ultra-secure storage with room for multiple failures

💡 Choose **RAID 7** if your data is *extremely* important and uptime is everything.

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## 🥉 RAID 6 / RAID-Z2 – Double Parity

**⭐⭐⭐⭐ Data Security**

* **Minimum Disks**: 3
* **Striping**: ✅ Yes
* **Parity**: Double distributed
* **Fault Tolerance**: Survives **2 disk** failures
* **Capacity**: Total disks - 2
* **Best For**: Strong data security with decent space efficiency

💡 Choose **RAID 6** if your data is *very* important and needs solid protection.

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## RAID 5 / RAID-Z – Single Parity

**⭐⭐⭐ Data Security**

* **Minimum Disks**: 3
* **Striping**: ✅ Yes
* **Parity**: Single distributed
* **Fault Tolerance**: Survives **1 disk** failure
* **Capacity**: Total disks - 1
* **Best For**: Balanced setup between space and protection

💡 Choose **RAID 5** if your data is important but you want more usable capacity than mirrored solutions.

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## RAID 1 – Mirrored

**⭐⭐⭐ Data Security**

* **Minimum Disks**: 2+
* **Striping**: ❌ No
* **Mirroring**: ✅ Yes (full duplication)
* **Fault Tolerance**: Survives all but one disk failing
* **Capacity**: Equal to the smallest disk in the array
* **Best For**: High redundancy for small arrays

💡 Choose **RAID 1** if you're storing important data and want simple, solid protection.

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## RAID 0 / SingleDrive – No Redundancy

**⭐ Data Security**

* **Minimum Disks**: 1
* **Striping**: ❌ No
* **Parity**: ❌ None
* **Fault Tolerance**: None — single disk failure = total data loss
* **Capacity**: 100% of available space
* **Best For**: Speed or testing, not safety

⚠️ Choose **RAID 0** or **SingleDrive** *only* if your data is disposable or frequently backed up elsewhere.

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# ⚙️ ggRock RAID Configuration

In **ggRock**, all drives are unified into a storage pool. This allows maximum performance and efficient use of installed drives. The selected RAID level determines how data is stored and protected inside this pool.

📘 For step-by-step setup, see the **"Configure ggRock Array"** section in the [ggRock Installation Manual](https://app.crisp.chat/website/574ccbdb-fedc-4721-8ca2-1639892b6db8/helpdesk/articles/en/2a7bc55c-fd17-43f5-ac67-a72b8ea2591c/).

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