Adaptec 2045 Installation And User Manual

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Contents

Adaptec 2045 Installation And User Manual Manual pdf 10 page image

Contents ● 10A Introduction to SASTerminology Used in This Chapter ................................................................. 89What is SAS?...................................................................................................... 89How Do SAS Devices Communicate?.............................................................. 90What’s a Phy? .................................................................................................... 90What’s a SAS Port?............................................................................................ 91What’s a SAS Address?...................................................................................... 91What’s a SAS Connector? ................................................................................. 91What do SAS Cables Look Like?....................................................................... 91How are Disk Drives Identified in SAS? .......................................................... 92What are the SAS Connection Options?.......................................................... 92Direct-attach Connections ......................................................................... 92Backplane Connections .............................................................................. 92SAS Expander Connections........................................................................ 93How is SAS Different from Parallel SCSI? ....................................................... 94B Understanding RAIDUnderstanding Drive Segments ....................................................................... 96Non-redundant Arrays (RAID 0)..................................................................... 96RAID 1 Arrays ................................................................................................... 97RAID 1 Enhanced Arrays.................................................................................. 97RAID 10 Arrays ................................................................................................. 98RAID 5 Arrays ................................................................................................... 99RAID 5EE Arrays............................................................................................. 100RAID 50 Arrays ............................................................................................... 101RAID 6 Arrays ................................................................................................. 102RAID 60 Arrays ............................................................................................... 102Selecting the Best RAID Level ........................................................................ 103C Using the Adaptec RAID Configuration UtilityIntroduction to the ARC Utility..................................................................... 105Running the ARC Utility ................................................................................ 105Navigating the ARC Utility ...................................................................... 105Using the ACU to Create and Manage Arrays............................................... 105Creating a New Array ............................................................................... 105Managing Existing Arrays ........................................................................ 106Initializing Disk Drives............................................................................. 108Rescanning Disk Drives............................................................................ 108Secure Erasing Disk Drives....................................................................... 108Managing Global Hot Spares ................................................................... 108Using the ACU to Create and Manage JBODs .............................................. 109Creating a New JBOD............................................................................... 109Managing Existing JBODs........................................................................ 109Using the ACU to Manage the maxCache Pool ............................................ 109Using SerialSelect to Modify Controller Settings........................................... 110