硬件相關 HBA IT mode SAS卡 直通卡 功能對比 LSI 直通卡的特功能對比 LSI SAS1068E 1 2 3 4 5 6 PCIe 1.0 x8 lanes = 2GB/s or x4 lanes = 1GB/s SFF-8087 port = 4x SAS lanes SFF-8484 port = 4x SAS lanes SAS1/SATA2 = 3Gbps = 375MB/s 8x SAS lanes * 375MB/s = 3GB/s (24Gbps) 不支持SATA硬盤大於2TB的SATA硬盤(SAS槃無限制),已經淘汰無購買價值 LSI SAS2008(8x SAS lanes) LSI SAS2004(4x SAS lanes) LSI SAS2116(16x SAS lanes) 1 2 3 4 5 6 7 PCIe 2.0 x8 lanes = 4GB/s or x4 lanes = 2GB/s SFF-8087 internal port = 4x SAS lanes SFF-8088 external port = 4x SAS lanes SFF-8644 external port = 4x SAS lanes SAS2/SATA3 = 6Gbps = 750MB/s 8x SAS lanes * 750MB/s = 6GB/s(48Gbps) 最適合接普通機械硬盤的直通卡, 帶寬足夠機械盤,同時發熱低 LSI SAS2308(8x SAS lanes) 1 2 3 4 5 6 7 PCIe 3.0 x8 lanes = 7.8GB/s SFF-8087 internal port = 4x SAS lanes SFF-8088 external port = 4x SAS lanes SFF-8644 external port = 4x SAS lanes SAS2/SATA3 = 6Gbps = 750MB/s 8x SAS lanes * 750MB/s = 6GB/s(48Gbps) 發熱較高,可以接SATA接口的固態盤,或者接大量機械硬盤帶寬不夠時可用 LSI SAS3008(8x SAS lanes) 1 2 3 4 5 6 PCIe 3.0 x8 lanes = 7.8GB/s SFF-8643 internal port = 4x SAS lanes SFF-8644 external port = 4x SAS lanes SAS3 = 12Gbps = 1.5GB/s 8x SAS lanes * 1.5GB/s = 12GB/s(96Gbps) 支持12Gbps的SAS3盤 LSI SAS3408(8x SAS lanes) 1 2 3 4 5 6 7 PCIe 3.0 x8 lanes = 7.8GB/s SFF-8643 internal port = 4x SAS lanes SFF-8644 external port = 4x SAS lanes SAS3 = 12Gbps = 1.5GB/s NVME support via "Tri-Mode" 8x SAS lanes * 1.5GB/s = 12GB/s(96Gbps) 支持nvme固態