Dell 12Gb SAS HBA (Non-RAID) External Controller LP | 1HD39

Quick Specs Models: Drive Types Drive Types: 12 Gb/s SAS PCI Support: PCI-e 3.0 SAS Connectors: 2x4 External Cache Memory: No Cache Write Back Cache: No Cache RAID Levels: No RAID Pass-Thru Only Max Drive Support: 255 RAID Support: No RAID Pass-Thru Only Part Numbers: LP: T93GD LP: 1HD39 FH: 2PHG9 The Dell 12Gb SAS HBA (Non-RAID) External Controller LP provides efficient and streamlined external SAS storage connectivity without RAID overhead. It supports PCI-e 3.0 and features dual 2x4 external SAS connectors to ensure fast and reliable data transfer in enterprise environments. Designed for non-RAID pass-through operation, this low-profile controller supports up to 255 drives. It is an ideal solution for external storage expansions where performance, simplicity, and scalability are critical requirements without the complexity of RAID configurations. Summary of RAID levels Summary of RAID levels Following is a list of the RAID levels supported by the PERC 12 series of cards: RAID 0 Uses disk striping to provide high data throughput, especially for large files in an environment that requires no data redundancy. RAID 1 Uses disk mirroring so that data written to one physical disk is simultaneously written to another physical disk. RAID 1 is good for small databases or other applications that require small capacity and complete data redundancy. RAID 5 Uses disk striping and parity data across all physical disks (distributed parity) to provide high data throughput and data redundancy, especially for small random access. RAID 6 Is an extension of RAID 5 and uses an additional parity block. RAID 6 uses block-level striping with two parity blocks distributed across all member disks. RAID 6 provides protection against double disk failures, and failures while a single disk is rebuilding. If you are using only one array, deploying RAID 6 is more effective than deploying a hot spare disk. RAID 10 Is a combination of RAID 0 and RAID 1, uses disk striping across mirrored disks. It provides high data throughput and complete data redundancy. RAID 50 Is a combination of RAID 0 and RAID 5 where a RAID 0 array is striped across RAID 5 elements. RAID 50 requires at least six disks. RAID 60 Is a combination of RAID 0 and RAID 6 where a RAID 0 array is striped across RAID 6 elements. RAID 60 requires at least eight disks.