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ME4 Series arrays are available with single or dual controllers. A dual-controller configuration offers a higher level of availability, protection, and double the I/O modules for connectivity and performance. In this configuration, if a partner controller fails, the storage system will fail over and run on a single controller until the redundancy is restored. With proper cabling in place and MPIO configured, the failover should not cause any service interruption to the hosts or applications.
ME4 Series arrays can be configured in all-flash, all-HDD, or hybrid configurations, and are designed to be installed by customers. For more information about ME4 Series features and hardware specifications, go to Dell.com.