Adaptec 58300 - SAS Storage Controller 300 MBps Installation And User Manual

Also see for 48300: Installation and user guide Datasheet

Contents

Adaptec 58300 - SAS Storage Controller 300 MBps Installation And User Manual Manual pdf 8 page image

Contents ● 8Understanding Adaptec Storage ManagerFeatures.............................................................................................................. 44Overview............................................................................................................ 44Physical Devices View................................................................................. 45Logical Devices View .................................................................................. 45Changing How Drives are Displayed ............................................................... 45Collapsed and Expanded Views ....................................................................... 46Component Views............................................................................................. 47Solving ProblemsTroubleshooting Checklist ............................................................................... 49Recovering from a Disk Drive Failure ............................................................. 49Failed Disk Drive Protected by a Hot Spare.............................................. 49Failed Disk Drive Not Protected by a Hot Spare....................................... 50Failure in Multiple Arrays Simultaneously................................................ 50Disk Drive Failure in a RAID 0 Array........................................................ 50Multiple Failures in the Same Array .......................................................... 50Introduction to SASTerminology Used in This Chapter ................................................................. 52What is SAS?...................................................................................................... 52How Do SAS Devices Communicate?.............................................................. 52What’s a Phy? .................................................................................................... 53What’s a SAS Port?............................................................................................ 53What’s a SAS Address?...................................................................................... 54What’s a SAS Connector? ................................................................................. 54What do SAS Cables Look Like?....................................................................... 54How are Disk Drives Identified in SAS? .......................................................... 54What are the SAS Connection Options?.......................................................... 54Direct-attach Connections ......................................................................... 55Backplane Connections .............................................................................. 55SAS Expander Connections........................................................................ 55How is SAS Different from Parallel SCSI? ....................................................... 56Understanding RAIDRAID Technology Overview............................................................................. 58Understanding Drive Segments ................................................................. 58Stripe-unit Size............................................................................................ 58Selecting a RAID Level and Tuning Performance..................................... 58RAID 0 (Non-RAID Arrays) ............................................................................ 59RAID 1 Arrays ................................................................................................... 60RAID 10 Arrays ................................................................................................. 60