Home > Storage > PowerVault > Guides > Dell PowerVault ME5 Series: VMware vSphere Best Practices > RAID data protection levels
PowerVault ME5 arrays support RAID data protection levels NRAID, 0, 1, 5, 6, 10 and ADAPT. ADAPT, included on every PowerVault ME5 array, is a special RAID implementation that offers some unique benefits. It can withstand two drive failures with very fast rebuilds. Spare capacity is distributed across all drives instead of dedicated spare drives. ADAPT disk groups can have up to 128 drives and allow mixing different drive sizes. Data is stored across all disks evenly. The storage system automatically rebalances the data when new drives are added or when the distribution of data has become imbalanced.
Note: RAID 0 is only available for read cache and cannot be used in linear mode.
We recommend selecting the RAID level that is most appropriate for the type of workloads in the environment. Review the information in the PowerVault ME5 Administrator's Guide on Dell.com/support. This guide details the benefits of each RAID level, the minimum and maximum disks requirements, and the recommendation of RAID levels for popular workloads.