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What is RAID?
A 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 provides mirroring protection for three drives.
RAID 50/60 strikes a balance between capacity, protection, and performance for high-capacity NAS with multiple drive configurations. For businesses using a NAS with over 10 drives, RAID 50/60 not only provides greater data protection than a single RAID 5/6 but also maximizes usable storage space compared to RAID 10. Besides data storage, and with the random write performance boost when using SSD RAID, RAID 50/60 also offers a great choice.
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.
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.
Raid Calculator
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0:06 - Introduction to RAID Setup
2:46 - Setting up RAID 0 on your QNAP NAS
6:30 - Setting up RAID 10 on your QNAP NAS
9:23 - Setting up RAID 5+1 (RAID 5 with hot spare) on your QNAP NAS
12:31 - Setting up RAID 6 on your QNAP NAS
15:10 - Setting up RAID 50 on your QNAP NAS
18:20 - ZFS RAID explanation
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