UNH Inter Operability Lab Serial Attached SCSI SAS
UNH Inter. Operability Lab Serial Attached SCSI (SAS) Use Cases Improving Networks Worldwide.
Improving Networks Worldwide.
SAS Use Cases Presentation Topics • Types of SAS Devices • SAS/SATA Interoperability • Cables and Connector Types 3
SAS Use Cases SAS Device Types • Initiators – Host Bus Adaptors (HBA) • Targets – Hard Disk Drives, Tape Drives, other SCSI Devices • Edge Expanders – Enclosures • Fanout Expanders – SAS Switches 4
SAS Use Cases SAS Initiators • Allows the computer to communicate with media • Interfaces with computer system via – PCI-X – PCI-Express SAS Initiator Network Interface Soundcard 5 Computer System
SAS Use Cases SAS Targets • Hard Disk Drives (HDD) – Spinning Magnetic media – 10, 000 or 15, 000 rotations per minute • Solid State Drives (SSD) – IC based media • Tape Drives – Thin, magnetic media – Typically DAT or LTO 6
SAS Use Cases SAS Targets • Stores Information • Most SAS Targets have two data interfaces • Interfaces with the computer system via the SAS Initiator SAS Target 7 Computer System
SAS Use Cases Edge Expanders • Found inside enclosures • Allows multiple targets to be connected to a initiator via one cable SAS Enclosure Edge Expander SAS Initiator SAS Target SAS Target 8 Computer System
SAS Use Cases Fanout Expanders • Also called a SAS Switch • Allows multiple Edge Expanders to be connected to a initiator Switch SAS Initiator SAS Enclosure 9 Computer System
SAS Use Cases SAS/SATA Interoperability • SAS is designed to Interoperate with SATA devices • SATA targets can be connected to SAS Initiators and Expanders. • SAS targets and expanders can NOT be connected to SATA Initiators. 10
SAS Use Cases SAS/SATA Interoperability SAS Enclosure SAS Target SATA Target SAS Initiator Computer System SATA Target SAS Target SATA Drives can be used in most SAS Enclosures or connected directly to most SAS initiators. 11
SAS Use Cases SAS/SATA Interoperability SAS Target SATA Initiator Computer System SAS Targets cannot be connected to SATA Initiators SAS Expanders cannot be connected to SATA Initiators. 12
SAS Use Cases SAS Connectors • Numerous connectors defined – Male/Female Drive Connectors – Two Types of 4 x Internal Connectors • 4 i Wide (Legacy) • 4 i Mini (aka Mini-SAS Internal, added with SAS 2. 0, Industry Standard Now) – External 4 x Connectors • Infiniband Style (Legacy) • i. Pass Style (aka Mini-SAS, added with SAS 2. 0, Industry Standard Now) • QSFP Under development for Optical and Active Cable solutions 13
SAS Use Cases Male Drive Connector Bottom view Top view Source: SAS-2 rev 15 a, Page 145 14
SAS Use Cases Male Drive Connector Bottom view Top view Note: Two signal connectors. From S 1 to S 7 and from S 8 to S 14 15
SAS Use Cases Male Drive Connector 16
SAS Use Cases Female Single-Port Drive Connector Bottom view Top view Source: SAS-2 rev 15 a, Page 145 17
SAS Use Cases Female Dual-Port Drive Connector Bottom view Top view Source: SAS-2 rev 15 a, Page 146 18
SAS Use Cases Female Backplane Drive Connector Bottom view Top view Source: SAS-2 rev 15 a, Page 146 19
SAS Use Cases Male 4 i Wide Cable Connector Source: SAS-2 rev 15 a, Page 149 20
SAS Use Cases Female 4 i Wide Cable Connector Source: SAS-2 rev 15 a, Page 149 21
SAS Use Cases Female 4 i Wide Cable Connector 22
SAS Use Cases Male 4 i Mini-SAS Cable Connector Source: SAS-2 rev 15 a, Page 152 23
SAS Use Cases Female 4 i Mini-SAS Cable Connector Source: SAS-2 rev 15 a, Page 152 24
SAS Use Cases Male 4 x Infiniband Style Cable Connector Note: This is a legacy connector Source: SAS-2 rev 15 a, Page 155 25
SAS Use Cases Male 4 x Infiniband Style Cable Connector Note: This is a legacy connector 26
SAS Use Cases Female 4 x Infiniband Style Cable Connector Note: This is a legacy connector Source: SAS-2 rev 15 a, Page 156 27
SAS Use Cases Male 4 x Mini-SAS Cable Connector • 4 Variations • Untrained 1. 5 and 3. 0 Gbps In/Out • Trained 1. 5, 3. 0, and 6. 0 Gbps In/Out • Keyed and marked to distinguish Source: SAS-2 rev 15 a, Page 158 28
SAS Use Cases Male 4 x Mini-SAS Cable Connector Source: SAS-2 rev 15 a, Page 159 29
SAS Use Cases Male 4 x Mini-SAS Cable Connector Source: SAS-2 rev 15 a, Page 160 30
SAS Use Cases Male 4 x Mini-SAS Cable Connector Source: SAS-2 rev 15 a, Page 160 31
SAS Use Cases Male 4 x Mini-SAS Cable Connector Source: SAS-2 rev 15 a, Page 161 32
SAS Use Cases Male 4 x Mini-SAS Cable Connector Note: Nonkeyed, universal connector 33
SAS Use Cases Male 4 x Mini-SAS Cable Connector 34
SAS Use Cases Female 4 x Mini-SAS Cable Connector Source: SAS-2 rev 15 a, Page 162 35
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