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RAID Management
Flexible RAID management, upgrade, and migration
What is RAID?
Redundant Array of Independent Disks (RAID) is a mechanism that can prevent data loss by combining multiple drives into one logical storage unit. Multiple drives provide redundancy by spreading data across them, which can provide protection against one or more drives failing based on the RAID level used. RAID configuration is easy as the default QNAP NAS settings will recommend an ideal RAID structure for your NAS.
RAID management made flexible
QNAP NAS supports various RAID types that provide varying levels of performance and data redundancy. Based on the number of drives in your NAS, you can choose from single; RAID 0, 1, 5, 6, 10, 50, 60; and hot spare configurations.
QNAP NAS with the QuTS hero operating system also supports Triple Parity to provide protection against three drives failing, while the Triple Mirror provide mirroring protection for three drives.
Choosing the ideal RAID type
No server downtime when expanding or migrating your RAID volumes
RAID hot-spare and Global hot-spare drives
Assigning a hot spare gives extra protection against data loss. If a hard drive in a specific RAID group fails, the RAID group will be automatically rebuilt with the hot-spare and the remaining healthy drives to ensure continuous system operation. The global hot-spare drives can also be shared across multiple RAID groups.
Customizable flexibility
RAID Resync Priority (Rebuild, Migration, Scrub, Sync)
QNAP NAS adjusts the rebuild speed according to drive workloads. You can utilize the “Service First,” “Balance,” and “Resync First” settings to prioritize system performance and rebuild speed for different scenarios.
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When selecting “Service First (Low speed)” and “Balance (Medium speed),” the system limits the speed for rebuilding, migrating, scrubbing, and syncing the RAID to ensure optimal service performance and quality.
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When selecting “Resync First (High speed),” the system automatically optimizes the operating performance based on the drive speeds, allowing you to perform critical RAID operations within a shorter time to reduce the risk of data loss caused by drive failure during a RAID rebuild.
Proactively ensure disk group security: RAID Scrubbing
RAID Scrubbing is used to verify the data integrity of disk groups with RAID 5 and RAID 6 configurations. It works by running a redundancy check to detect and correct inconsistencies that are undetectable during routine usage. QNAP NAS users are recommended to run RAID Scrubbing monthly: periodically running RAID Scrubbing can detect potential corrupted data or drives at an early stage, giving your NAS the chance to attempt automatic repairs or to report drive-related issues, helping to increase the integrity of user data, and to proactively ensure the security of disk groups.
Try out QNAP RAID Calculator - complete QNAP NAS configuration in 3 steps
Wide Hard Drive Compatibility, Optimized Cost Efficiency
QNAP NAS is compatible with most hard drive brands, allowing you to choose based on budget, capacity, and performance. QNAP proactively tests new and existing hard drives with NAS to ensure reliability and storage efficiency.
