SAS-3标准：内部工作草案，2013年修订版
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收藏 5.8MB PDF 举报 Serial Attached SCSI-3 (SAS-3) 是一个由美国国家标准技术协会 (T10/BSRINCITS) 的 Technical Committee T10 负责制定的内部工作草案，旨在更新和扩展 Serial Attached SCSI（SAS）技术的最新标准。该标准的修订版本为 06，发布日期为 2013 年 11 月 7 日。作为一项未完成的规范，SAS-3 目前尚在 T10 技术委员会的审议和修改阶段，内容可能发生变化，且仅供 T10 成员、其技术委员会以及相关任务组成员在标准化活动中使用，未经进一步授权不得用于商业或盈利目的。
SAS-3 标准的核心关注点包括但不限于提高数据传输速度、降低延迟、增强连接可靠性以及支持更高级别的功能，如多路径 I/O（MPIO）和扩展连接距离。它旨在优化存储系统性能，适应数据中心和企业级应用对高带宽、低延迟和大容量存储的需求。与 SAS-2 相比，SAS-3 可能会引入新的物理层规格，例如更高的信号速率和更大的通道数量，以实现更快的数据传输速率。
此外，SAS-3 标准可能还涉及电源管理、错误检测与纠正机制、数据一致性保证以及端到端服务质量（QoS）的增强。为了确保兼容性和互操作性，该标准可能会定义新的接口规范和协议，以便硬件制造商能够设计出符合标准的新一代 SAS 设备，包括硬盘驱动器（HDD）、固态硬盘（SSD）、磁带驱动器和其他存储组件。
值得注意的是，ISO/IEC 14776-154 可能是 SAS-3 标准的一个参考或基础标准，这意味着它可能包含了国际标准化组织的相关规定。而 BSRINCITS51 可能是 T10 在 INCITS 中的特定项目编号，反映了标准制定过程中的特定阶段或里程碑。
由于这是一份内部工作草案，实际发布的最终标准可能会有所不同，并经过严格的审阅和批准流程。因此，对于任何计划实施 SAS-3 的用户或开发者来说，务必关注官方发布的正式标准文档，以确保技术和产品的兼容性和有效性。T10 技术编辑 Alvin Cox 的联系信息也被提供，供有兴趣的人士咨询或反馈意见。
7 November 2013 T10/BSR INCITS 519 Revision 06
Working Draft Serial Attached SCSI - 3 (SAS-3) xvi
Figure 138 — Simulation of the reference transmitter from a captured signal .............................................. 189
Figure 139 — Applied SJ for untrained 1.5 Gbit/s and 3 Gbit/s .................................................................... 196
Figure 140 — Receiver device |S
CC11
|, |S
DD11
|, and |S
CD11
| limits .............................................................. 198
Figure 141 — Reference receiver device for trained 1.5 Gbit/s, 3 Gbit/s, and 6 Gbit/s ................................. 199
Figure 142 — Reference receiver device for trained 12 Gbit/s ..................................................................... 199
Figure 143 — Reference receiver device termination S-parameters for trained 1.5 Gbit/s, 3 Gbit/s, and
6 Gbit/s .................................................................................................................................................... 201
Figure 144 — Stressed receiver device jitter tolerance test block diagram for trained 1.5 Gbit/s, 3 Gbit/s,
and 6 Gbit/s ............................................................................................................................................. 202
Figure 145 — Stressed receiver device jitter tolerance test D24.3 eye opening for trained 1.5 Gbit/s,
3 Gbit/s, and 6 Gbit/s ............................................................................................................................... 204
Figure 146 — Stressed receiver transmitter equalization adjustment for 12 Gbit/s ...................................... 206
Figure 147 — Simulation of the reference transmitter from a captured signal .............................................. 207
Figure 148 — Applied SJ for trained 1.5 Gbit/s, 3 Gbit/s, 6 Gbit/s, and 12 Gbit/s without SSC support ........ 209
Figure 149 — Applied SJ for trained 1.5 Gbit/s, 3 Gbit/s, 6 Gbit/s and 12 Gbit/s with SSC support .............. 210
Figure 150 — Center-spreading tolerance buffer ......................................................................................... 215
Figure 151 — OOB signal transmission ....................................................................................................... 220
Figure 152 — SATA port selection signal ..................................................................................................... 222
Figure C.1 — Reference channel eye opening ............................................................................................ 275
Figure D.1 — Trained 12Gbit/s die to die insertion loss model .................................................................... 276
Figure D.2 — Transmitter device end to end simulation diagram that includes a separable TxRx
connection segment ................................................................................................................................ 279
Figure D.3 — End to end simulation diagram of the from target device usage model for a transmitter
device connected to a non-separable TxRx connection segment ........................................................... 281
Figure D.4 — End to end simulation diagram of the to target device usage model for a transmitter device
connected to a non-separable TxRx connection segment ...................................................................... 282
Figure D.5 — Stressed receiver device delivered signal calibration end to end simulation diagram ........... 284
Figure E.1 — S-parameter measurement connections for a four port VNA ................................................. 286
Figure E.2 — Example of a SAS three TxRx connection segment .............................................................. 287
Figure F.1 — A simple physical link ............................................................................................................. 289
Figure F.2 — Transmitter device details ...................................................................................................... 290
Figure F.3 — Receiver device details .......................................................................................................... 291
Figure F.4 — De-embedding of connectors in test fixtures .......................................................................... 293
Figure F.5 — De-embedding to ET for 12 Gbit/s transmitter compliance .................................................... 294
Figure F.6 — De-embedding calibration test structure ................................................................................ 294
Figure F.7 — Measurement conditions for signal output at the transmitter device ...................................... 295
Figure F.8 — Transmitter device signal output measurement test fixture details ........................................ 295
Figure F.9 — Measurement conditions for signal tolerance at the transmitter device ................................. 296
Figure F.10 — Calibration of test fixture for signal tolerance at the transmitter device ................................ 296
Figure F.11 — Measurement conditions for signal output at the receiver device ........................................ 297
Figure F.12 — Measurement conditions for signal tolerance at the receiver device ................................... 297
Figure F.13 — Calibration of test fixture for signal tolerance at the receiver device .................................... 298
Figure F.14 — S-parameter port naming conventions .............................................................................
.... 299
Figure F.15 —
Four single ended port or two differential port element ........................................................ 300
Figure F.16 — S-parameters for single ended and differential systems ...................................................... 300
Figure F.17 — Measurement conditions for S
22
at the transmitter device connector .................................. 301
Figure F.18 — Measurement conditions for S
11
at the receiver device connector ...................................... 302
Figure F.19 — Measurement conditions for S
11
at IT or CT ........................................................................ 303
Figure F.20 — Measurement conditions for S
22
at IR or CR ....................................................................... 304
Figure G.1 — Reference transmitter device and reference receiver device termination circuit model ........ 311
Figure G.2 — Generic return loss circuit model ........................................................................................... 313
Figure G.3 — Generic return loss model |S
11
| ............................................................................................. 314
Figure G.4 — Reference transmitter test load measurement setup ............................................................. 316
Figure G.5 — Reference transmitter test load |S
DD21
(f)| up to 20 GHz ....................................................... 317
Figure H.1 — Dual comparator design for active cable assembly detection ................................................ 318
Figure I.1 — SAS primary icon ..................................................................................................................... 319
Figure I.2 — SAS alternate icon ................................................................................................................... 319
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