LSI 25083 Host adapter, Board, Hot spare, Internal SAS, Device, Main memory, PCI Express

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host

The computer system in which a RAID controller is installed. It uses the

 

RAID controller to transfer information to and from devices attached to

 

the SCSI bus.

host adapter

A circuit board or integrated circuit that provides a device connection to

board

the computer system.

hot spare

An idle, powered on, standby drive that is ready for immediate use in

 

case of drive failure. A hot spare does not contain any user data. A hot

 

spare can be dedicated to a single redundant array or it can be part of

 

the global hot-spare pool for all arrays managed by the controller.

 

When a drive fails, the controller firmware automatically replaces and

 

rebuilds the data from the failed drive to the hot spare. Data can be

 

rebuilt only from virtual drives with redundancy (RAID levels 1, 5, 6, 10,

 

50, and 60; not RAID level 0), and the hot spare must have sufficient

 

capacity.

internal SAS

A SAS device installed inside the computer cabinet. These devices are

device

connected by using a shielded cable.

main memory

The part of computer memory that is directly accessible by the CPU

 

(usually synonymous with RAM).

NVRAM

Acronym for nonvolatile random access memory. An EEPROM

 

(electronically erasable read-only memory) chip that stores configuration

 

information. Refer to EEPROM.

PCI

Acronym for peripheral component interconnect. A high-performance,

 

local bus specification that allows the connection of devices directly to

 

computer memory. The PCI Local Bus allows transparent upgrades from

 

32-bit data path at 33 MHz to 64-bit data path at 33 MHz, and from 32-bit

 

data path at 66 MHz to 64-bit data path at 66 MHz.

PCI Express

Acronym for peripheral component interconnect Express. A high-

 

performance, local bus specification that allows the connection of devices

 

directly to computer memory. PCI Express is a two-way, serial connection

 

that transfers data on two pairs of point-to-point data lines. PCI Express

 

goes beyond the PCI specification in that it is intended as a unifying I/O

 

architecture for various systems: desktops, workstations, mobile, server,

 

communications, and embedded devices.

A-2

Glossary of Terms and Abbreviations

 

Copyright © 2009 by LSI Corporation. All rights reserved.

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Contents USER’S Guide V e m b e r 2 0 0Trademark Acknowledgment Preface Audience OrganizationDocument Number 80-00163-01 Rev. D MegaRAID SAS Software User’s GuideNotation Example Meaning and Use ConventionsRevision History Fd1spSafety Instructions When Working Inside Your Computer Preface XPreface Contents Appendix a Glossary of Terms Abbreviations Customer Feedback XivContents Figures XviContents Tables XviiiContents Chapter Overview Overview2Overview SAS Controller Descriptions General Description General Description Configuration Scenarios Example of an LSI SAS Direct-Connect Application Benefits of the SAS Interface PCI Express ArchitectureSummary of SAS RAID Controller Characteristics Operating System SupportSAS Features SAS Array Limitations SAS RAID Controller Array Limitations12Overview PCI Express Performance Sata II FeaturesUsability Features Flexibility Features Drive RoamingDrive Migration 16Overview Hardware Specifications MegaRAID 6Gb/s SAS RAID Controller Features18Overview Technical Support Mail Phone Support20Overview Chapter MegaRAID SAS Hardware Installation RequirementsQuick Installation Detailed Installation Detailed InstallationBracket Screw Detailed Installation After Installing the RAID Controller SAS Device Cables and ConnectorsSAS Device Cables and Connectors Sata II Connectors Serial Attached Scsi SAS Backplane Receptacle Connector Connecting the SAS 9260-8i RAID Controller to a Drive To Drive Enclosure Mini SAS Cable Plug Connector MegaRAID SAS Hardware Installation MegaRAID 6Gb/s SAS RAID Controller Family MegaRAID SAS 9240 RAID ControllersCard Layout for the MegaRAID SAS 9240-8i RAID Controller SAS 9240-4i/SAS 9240-8i RAID Controller Jumpers ConnectorsMegaRAID SAS 9260 RAID Controllers Jumper Type DescriptionCard Layout for the MegaRAID SAS 9260-8i RAID Controller SAS 9260-8i/SAS 9260DE-8i RAID Controller Jumpers JT1MegaRAID SAS 9261 RAID Controller MegaRAID SAS Software User’s Guide forCard Layout for the MegaRAID SAS 9261-8i RAID Controller SAS 9261-8i RAID Controller JumpersMegaRAID SAS 9280 RAID Controllers JT6B2Connector Description Comments SAS 9280-8e and SAS 9280DE-8e RAID ControllersSAS 9280-8e and SAS 9280DE-8e RAID Controllers SAS 9280-4i/4e RAID Controller Connectors Card Layout for the MegaRAID SAS 9280-4i/4e RAID ControllerIpmi Data Transfer Rates Scsi Features Termination MegaRAID SAS 6Gb/s RAID Controller CharacteristicsMegaRAID 6Gb/s SAS RAID Controller Characteristics Flash SerialTechnical Specifications Specification RAID Controllers RAID Controller SpecificationsRAID Controller Specifications MegaRAID SAS 9240, SAS 9260, SAS 9261, and SASSpecification 9261, and SAS 9280 RAID Controllers Array Performance FeaturesArray Performance Features MegaRAID SAS 9240, SAS 9260, SASFault Tolerance Features Fault ToleranceElectrical Characteristics Power Supply Requirements for SAS 9240 RAID ControllersPCI Edge Connector State 10 Power Supply for SAS 9240 RAID ControllersPower Supply Requirements for SAS 9260 RAID Controllers 11 Power Supply for SAS 9260 RAID Controllers Power Supply Requirements for the SAS 9261 RAID Controller 12 Power Supply for SAS 9261 RAID ControllersPower Supply Requirements for SAS 9280 RAID Controllers Safety Characteristics 13 Power Supply for SAS 9280 RAID ControllersDomain ConfigurationDevice driver ValidationBoard HostHost adapter Hot sparePeripheral devices RAID levelsStriping SAS deviceStripe size Customer Feedback Reader’s Comments Excellent Good Average Fair