LSI Understanding the SAS6160 Switch and Serial Attached SCSI

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Chapter 1: Overview Serial Attached SCSI and the SAS6160 Switch

LSISAS6160 SAS Switch User Guide

1.2Serial Attached SCSI and the SAS6160 Switch

SAS replaces Ultra320 SCSI as the next phase in the evolution of the SCSI standard. The SAS interface addresses enterprise data storage and retrieval requirements with features such as point-to-point topology, 6.0Gb/s transfer rate, minimum arbitration overhead, native support for both SAS and SATA drives, and smaller cables and connectors.

In SAS storage environments, the SAS6160 switch allows connection of multiple targets and initiators through a switched device for manageable scalability. The integrated SDM application provides a central management point to view the SAS topology, manage other switches or expanders in the domain, and to configure zoning to provide exclusive access between endpoints in the domain. The SAS6160 switch allows data centers to benefit from the improved performance, minimum arbitration overhead, simplified cabling, and lower system implementation costs of SAS and SATA, while easing migration from Direct Attached Storage.

Figure 1: The LSISAS6160 Switch

The SAS6160 switch uses two LSISAS2x36 6Gb/s SAS expanders, which are compliant with the ANSI Serial Attached SCSI specification and support SATA as defined in the Serial ATA: High Speed Serialized AT Attachment and the Serial ATA II: Port Selector Specification.

The SAS6160 switch functions as a single expander and offers advanced hardware management with an external power supply module, and two enclosure fans, and temperature and power supply voltage sensing/alerts. The switch is housed in a compact chassis for easy shelf placement in rack mounted server clusters.

NOTE: The two connectors on the upper left of the face plate (port 0 and port 2) support active cabling for longer cable runs. Passive cables may also be connected to these ports for normal cable runs.

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LSI Corporation September 2010

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Contents LSISAS6160 SAS Switch Revision History Table of Contents SAS Domain Manager Command Line Interface Features ChapterSerial Attached Scsi and the SAS6160 Switch LSISAS6160 SwitchLSISAS6160 Resource Management Block Diagram of the LSISAS6160 Switch SAS Phys, Ports, and Connectors Link between Two Single SAS PhysNarrow and Wide SAS Ports SAS Connectors and Cabling Mini SAS 4x CableAcross the entire Zpsds Minimize conflictsOnly the storage within its zone or zones SAS Zoning OverviewGroups and zone sets manually by using the SDM utility Following figure shows a simple example of zoningCreating SAS Zones Overview SAS Routing and Zoning Configuration for Zoning Example Connecting Devices to the SAS6160 Switch Creating Zone GroupsExample 1, Multiple Servers and JBODs Example 3, Multiple Servers and a Cascading Switch Example 4, High Availability Example 5, Large Data Storage Topology Example 6, Cascaded Switches Example 7, Switches in a Star Tree Configuration To interpret the LEDs on the switch Unpacking the SwitchIdentifying Switch Components Carton contains the following itemsCables Installing the SAS6160 SwitchSAS6160 Connectors SAS6160 LEDsRack. These options are shown in the following figure Mounting Shelf in a Rack Connecting to a Host Changing the Default Static IP Address Setting a Static IP AddressUsing SDM-GUI Exit SDM-GUI and power cycle the switchExit SDM-CLI and power cycle the switch For exampleConnecting SAS and Sata Hardware Safety Notices 1 FCCCanada Mark Vcci Bsmi 5 CCC Installation and Hardware Setup Safety Notices SDM-GUI Accounts Starting SDM-GUIOptions Embedded SDM only supports a single domainFile, Server, and Help Menu Options For zoning Information is available to both admin and user accountsViews Tab View End Device TableAlias Table View Zone Groups View Zone GroupsView Zone Sets View Zone SetsNode100, and so on Domain TabThis section, click the hyperlinks on the Domain tab Alias ManagementView/Delete Aliases command Domain. You also can also this command to delete aliasesView/Delete Aliases Box and clicking the Delete button Connector WizardZone set and the two associated zone groups Group to communicate with each otherCheck box and clicking the Delete button Guide you through the configuration processMaximum number of 248, the wizard displays an error message Zone group to communicate with each otherManually Configure Zone Groups Create Zone Group Create Zone GroupModify Zone Group Time of activation. shows the View Zone Group windowView Zone Group Delete Zone GroupPassword Maximum password length is 32 charactersBinary 0, as defined by the SAS 2.0 specification MatrixView Zone Set View Zone Set windowZone set Modify Zone SetActivate/Deactivate Zone Set Activate/Deactivate Zone SetWindow and then clicking Delete Delete Zone SetDevices Tab Device Tree and Properties TabSelected device. In , the domain properties are shown Following figure shows the Properties tabProperties Tab Background loop Environmentals TabThose connections Following figure shows the Attached Devices tabAttached Devices Tab Selected expander Following figure shows the Phys tabZone Group Tab Zone Group TabUpdate Firmware This tab contains the following commandsSuccessful update Operations TabReset Switch Following figure shows the Enable/Disable/Reset windowEnable/Disable/Reset PhysConfigure IP As shown in the following figuresCommand Usage Syntax Command arguments„ help command SDM-CLI CommandsHelp command Domain focus domain name„ passwd user Passwd admin user„ passwd admin Exit„ alias delete „ show zonegroup „ show alias„ show phy „ show zoneset„ zonegroup delete single name „ zonegroup add name sas addressaliasphy„ zonegroup create name „ zonegroup delete all noconfirm„ zoneset add name zone group zone group Set membership„ zoneset activate name „ zoneset create nameSdmcli show alias Sample Output for Show Command„ zoneset passwd Sdmcli show alias CalhounSdmcli show device Calhoun Show domain Sdmcli show domainSdmcli show phy Show phyRA Routing Attributes VP Virtual PHY Zone Grp Alias Phy Device Capabilities SAS Address TypeSdmcli show phy Calhoun Show phy aliasZoning Active Zone Group Number Zoning Inactive * phy may be assigned to a zone groupSDM-CLI Version SDM-D Version Sdmcli show phy Lincoln01Sdmcli show version Show phy alias phyShow zoneset data name Sdmcli show zoneset data ZoneOne Sdmcli show zonegroup ZoneOne#001Sdmcli show zoneset active Show zonegroup nameXip -i get avail Xip -i 500062b15555557f get expTroubleshooting