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What is RAID?


RAID (Redundant Arrays of Independent Disks) is a technology that combines multiple independent physical disks into a single logical unit to improve storage performance, capacity, and reliability.
By distributing or replicating data across several disks, RAID can achieve faster data access speeds, larger storage volumes, and enhanced fault tolerance compared to a single disk. Different configurations, known as RAID levels, provide various trade-offs between performance, redundancy, and capacity.

Common RAID levels include:
  • RAID 0 (Striping)
  • RAID 1 (Mirroring)
  • RAID 5 (Striping with Distributed Parity)
  • RAID 6 (Striping with Dual Parity)
  • RAID 10 (Combination of Mirroring and Striping)
  • RAID 50 (Combination of RAID 5 and Striping)
  • RAID 60 (Combination of RAID 6 and Striping)


What is ZFS?


ZFS (Zettabyte File System) is an advanced file system and logical volume manager that integrates built-in software RAID capabilities, eliminating the need for traditional hardware RAID controllers. It allows users to pool multiple disks into a storage pool, which can then be flexibly allocated into file systems or volumes.

ZFS is designed with a focus on data integrity, scalability, and ease of management. Its key features include:

  • End-to-end data integrity verification using checksums
  • Copy-on-write transactional model
  • Efficient snapshots and clones
  • Built-in compression and deduplication
  • Automatic repair of corrupted data (when redundancy exists)


One of ZFS’s standout features is its native support for several RAID-like configurations, known as RAID-Z. These provide redundancy without relying on external hardware.

ZFS RAID-Z levels include:
  • RAID-Z1: Similar to RAID 5, with single parity (allows one disk failure).
  • RAID-Z2: Similar to RAID 6, with double parity (allows two disk failures).
  • RAID-Z3: Triple parity (allows three disk failures).

Choosing the right RAID-Z level depends on the balance between storage efficiency, performance, and fault tolerance required for a given use case.






Explore RAID Comparison:



Setting Up RAID 0 in CyberData

RAID 0 (Striping without Parity or Redundancy)

RAID 0, also known as striping, offers the highest storage performance among all RAID levels.

RAID 0 improves storage performance by splitting data across multiple disks for read/write operations. This allows data requests to be processed in parallel by multiple disks, with each disk handling its portion of the request.

Such parallel data operations make full use of bus bandwidth, significantly enhancing overall disk performance.

Multiple hard drives are virtually combined into a single drive, with the total capacity equal to the sum of all drives. A minimum of two hard drives is required.

Advantages

· Fast access speed

· No redundancy

· Concurrent read/write operations

· 100% disk utilization


Disadvantages

Lack of parity or backup means if any one hard drive fails (or any data block is damaged), the entire file may become unreadable.


Use Cases

Temporary data (download cache, video editing scratch disks)

Scenarios where speed is prioritized over security (high-performance computing, non-critical test environments)

Limited budgets, with data that can be easily reacquired (e.g., downloadable movies)


Instructions

After binding and logging into the Cyber Cloud software, access the device.

On the "Initialize New Device" page, set the language, time zone, and service region, then proceed to create the system pool.

Navigate to "Create Storage Pool" → select Simple Mode → choose Array Mode.

Note: Creating a storage pool will format the hard drives, erasing all existing data. Please back up important data beforehand.