SATA

• SATA
  • Serial ATA
• ATA
  • AT Attachment
• 2003 1.0 1.5 Gbit/s 150 MB/s
• 2004 2.0 3 Gbit/s 300 MB/s
• 2008 3.0 6 Gbit/s 600 MB/s
• 2013 3.2 16 Gbit/s 1969 MB/s
• AHCI - Advanced Host Controller Interface
• OHCI - Open
  • USB 1.1
• EHCI
  • USB 2.0
• UHCI - Universal
• XHCI - Extensible
  • USB 3.0
• WHCI - Wireless

Spec	BW	Rate	Encoding	Since
SAS-1	3.0 Gbit/s			2004
SAS-2	6.0 Gbit/s			2009-02
SAS-3	12.0 Gbit/s			2013-03
SAS-4	22.5 Gbit/s			2017
SAS-5	45 Gbit/s
SATA 1.0	1.5 Gb/s	150MB/s	8b/10b	2003-01
SATA 2.0	3 Gb/s	300MB/s	8b/10b	2004
SATA 3.0	6 Gb/s	600MB/s	8b/10b	2009-05
SATA Express	16 Gb/s	1969MB/s	128b/130b

Spec vs Connector

• Spec
  • 定义物理层、链路层、端口层、传输层、应用层
• Connector
  • 定义物理接口

| Host | Pins | # | | -------- | ----- | ------- | ------------------------ | | SFF-8087 | 36 | 4 | 常见 | | SFF-8088 | 26 | 4 | external iPass,iSAS,mSAS | | SFF-8482 | 29 | 2 lanes | SATA, SAS - 最常见 | | SFF-8484 | 32,19 | 4,2 |

| Connector | Pin | | --------- | --- | ----------------------------- | | SATA | 7 | | mSATA | | 接口同 mini PCI-E, 电信号不同 | | eSATA | | USB 2.0 | 4 | | eSATAp | | Power over eSATA,eSATA+USB |

• SFF-8087
  • PCie 卡上 1 分 4 接口
  • SFF-8087 -> 4 SFF-8482
• SFF-8482

| abbr. | stand for | | ----- | ------------------------------------------------------------------------ | ------------------ | | SGPIO | Serial general purpose input/output | 串行通用型输入输出 | | NVMe | NVM Express, Non-Volatile Memory Host Controller Interface Specification | | SAS | Serial Attached SCSI |

M.2

• M.2 - NGFF - Next Generation Form Factor
• 用于替换 mSATA
• 物理硬件使用 pcie-mini 的布局
• 更适合于 SSD

iSCSI

• iSCSI Internet Small Computer System Interface
• Linux iSCSI
• Using iSCSI On Ubuntu 10.04 (Initiator And Target)
• SCSI commands over network

SAN

• SAN Storage Area Network

FAQ

SAS vs SATA

目前功能上已经没有太大区别。

• SATA
  • 家用、消费级产品
• SAS
  • SATA 超集 - SAS 兼容 SATA
  • 服务器、工作站、企业级
  • 基础要求高于 SATA