What RAID configurations are supported by Synology NAS?

Synology NAS supports the following RAID configurations:

Raid 0 - Striped volume

Raid 0 provides enhanced performance by striping data across multiple drives. It does not offer data redundancy and if one drive fails, all data will be lost.

Raid 1 - Mirrored volume

Raid 1 provides data redundancy by mirroring all data on two drives. If one drive fails, the other drive will continue to function without any data loss.

Raid 5 - Striped volume with parity

Raid 5 requires at least three drives and provides both enhanced performance and data redundancy. It stripes data across multiple drives and also includes parity information to allow for data reconstruction in case of a single drive failure.

Raid 6 - Striped volume with dual parity

Raid 6 requires at least four drives and provides increased data redundancy compared to Raid 5. It includes two separate parity calculations, allowing for data recovery even if two drives fail simultaneously.

Raid 10 - Striped volume with mirrored sets

Raid 10 combines both striping and mirroring to provide enhanced performance and data redundancy. It requires a minimum of four drives and data is striped across mirrored pairs of drives.

Raid F1 - Enhanced protection for SSD

Raid F1 is designed for SSDs and uses an optimized write pattern to extend their lifespan. It provides data protection by using distributed parity across all drives.

Raid Basic - Non-redundant disk array

Raid Basic allows each drive to function independently without any data redundancy or striping.

Raid JBOD - Just a bunch of disks

Raid JBOD combines multiple drives into a single logical volume, without striping or data redundancy. Each drive in the array functions independently.

Raid SHR - Synology Hybrid Raid

Raid SHR is a proprietary hybrid RAID configuration specifically designed for Synology NAS devices. It offers flexible storage expansion, combining different drive sizes and providing enhanced data protection and performance.

Please note that the number of drives required for each RAID configuration may vary depending on the specific NAS model.

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