Drive Sparing for EMC Symmetrix DMX-4 and DMX-4 Systems

Drive sparing significantly increases data protection and it's availability. EMC Symmetrix systems support dynamic and permanent sparing. This white paper explains the benefits of both sparing methods, and describes the sparing processes in Symmetrix DMX-3 and DMX-4 systems running Enginuity 5772 and later. Configuration rules and considerations are also discussed.