Home > Storage > Unity XT > Storage Admin > Dell Unity Dynamic Pools > Supported RAID types
Dynamic pools support several RAID protection levels, including RAID 1/0 (also known as RAID 10), RAID 5, and RAID 6. In pool that contains multiple tiers, the protection level is set per drive tier. RAID 1/0 is best suited for applications with fast or high processing requirements, such as enterprise servers and moderate-sized database systems. It provides both high performance and reliability at medium cost, while providing lower capacity per drive. RAID 5 is best suited for transaction processing and often used for general purpose storage, as well as for relational database and enterprise resource systems. Depending on the drives used, RAID 5 can provide a fairly low cost per GB while still retaining redundancy. RAID 6 is best suited for read-biased workloads, such as archiving and backup to drive, and provides the best redundancy of all supported RAID types.
When creating a dynamic pool, the RAID type will be specified for each drive tier by the user depending on the protection level they require. In Unisphere, RAID 6 is the default and only option for the NL-SAS Capacity Tier. If RAID 1/0 or 5 is required for the Capacity Tier, Unisphere CLI or REST API can be used to create the pool or expand it with NL-SAS drives. Once the pool is created, the RAID type selected will be set for all current and future drive partnership groups within the tier of the pool. Once the RAID type is set for a tier, it is persisted for the lifetime of the pool and cannot be changed later.