How many disks can fail simultaneously in Dynamic Disk Pools (DDP)? Last updated Save as PDF Share Share Tweet Share Views:84Visibility:PublicVotes:0Category:e-series-systemsSpecialty:esgLast Updated: Applies to E-series Dynamic Disk Pools (DDP) Answer Up to two drives can fail at the same time in DDP and there will be no concern of data loss. Multiple drives failure scenario, see TR-4652. Additional Information What is preservation capacity? How many drives should be assigned for disk pool preservation capacity in a E-Series system?