Dell PERC 11 H755 (SAS/SATA) Front RAID Controller | 3KDWX

Quick Specs ModelsFront PERC Drive Types12 Gb/s SAS6 Gb/s SAS/SATA3Gb/s SAS/SATA PCI SupportPCI-e 4.0 SAS Connectors16 Port 2x8 Internal Cache Memory8GB NV Write Back CacheFlash Backed Cache Max Drive Support16/controller50 with SAS Expander *Platform limit RADI Levels0,1,5,6,10,50,60 RAID SupportHardware Part Numbers: 3KDWX H755 PERC Series 11 Options H755 Adapter View PERC Enclosures per port 0Cache: 8GB NVRAID Level: 0,1,5,6,10,50,60Non-RAID: YesPCIe: Gen 4Supported Drives: Gen3 (8 GT/s) NVMe Gen4 (16 GT/s) NVMe 12 Gb/s SAS 6 Gb/s SAS/SATA 3 Gbps SAS/SATA * Supports SAS, SATA, or NVMe Max SAS/SATA disks: 16 drives per controller w/ SAS Expander: Limited by platform offerings Max NVMe drives: 8 drives per controller w/ PCIe Switch Expander: Limited by platform offerings Max physical disks: 16 *Limited by platform offerings H755 Front View PERC Enclosures per port 0 Cache: 8GB NV RAID Level: 0,1,5,6,10,50,60 Non-RAID: Yes PCIe: Gen 4 Supported Drives: 12 Gb/s SAS 6 Gb/s SAS/SATA 3 Gbps SAS/SATA Max SAS/SATA disks: 16 drives per controller w/ SAS Expander: Limited by platform offerings Max NVMe drives: Not Supported Max physical disks: 16*Limited by platform offerings H755 MX View PERC Enclosures per port 0 Cache: 8GB NV RAID Level: 0,1,5,6,10,50,60 Non-RAID: Yes PCIe: Gen 4 Supported Drives: Gen3 (8 GT/s) NVMe Gen4 (16 GT/s) NVMe 12 Gb/s SAS 6 Gb/s SAS/SATA 3 Gb/s SAS/SATA * Supports SAS, SATA, or NVMe Max SAS/SATA disks: 8 drives per controller Max NVMe drives: 8 drives per controller Max physical disks: 8 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.