Ability to mix primary and near-online storage behind the same SAN controller for easy to install tiered storage solutionsAdvanced Data Guarding (ADG) - Highest level of fault tolerance, allocates two sets of parity data across drives and allows simultaneous write operations, this level of fault tolerance can withstand two simultaneous drive failures without downtime or data loss 2 Gbit/1 Gbit Fibre connection to host - Supports both 1 Gbit and 2 Gbit Fibre Channel fabrics to ensure your investment in 1 Gbit infrastructure is protected High performance built on DAS to SAN (DtS) architecture Scalable to eight- SATA enclosures for 24 TB or 4- SCSI enclosures for 8.1 TB of storage capacity with 4- dual channel SCSI I/O cards Ability to hot plug disk enclosures to the controller shelf