A.10 What are the SAS Connection Options?.........................................................................................................45
A.10.1 Direct-attach Connections...............................................................................................................45
A.10.2 Backplane Connections...................................................................................................................46
A.10.3 SAS Expander Connections..............................................................................................................46
A.11 How is SAS Different from Parallel SCSI? .......................................................................................................47
Appendix B Understanding RAID........................................................................................................48
B.1 Understanding Drive Segments........................................................................................................................48
B.2 Non-redundant Arrays (RAID 0)........................................................................................................................48
B.3 RAID 1 Arrays ...................................................................................................................................................49
B.4 RAID 1 Enhanced Arrays...................................................................................................................................49
B.5 RAID 10 Arrays..................................................................................................................................................50
B.6 RAID 5 Arrays....................................................................................................................................................51
B.7 RAID 5EE Arrays................................................................................................................................................52
B.8 RAID 50 Arrays..................................................................................................................................................53
B.9 RAID 6 Arrays....................................................................................................................................................54
B.10 RAID 60 Arrays................................................................................................................................................54
B.11 Comparing RAID Levels...................................................................................................................................55
Appendix C Using the RAID Conguration Utility..............................................................................56
C.1 Introduction to the ARC Utility.........................................................................................................................56
C.1.1 Ctrl-A or uEFI/HII? .............................................................................................................................56
C.1.2 Running the ARC Utility.....................................................................................................................56
C.2 Using the ARC Utility to Create and Manage Arrays.........................................................................................57
C.2.1 Creating a New Array.........................................................................................................................57
C.2.2 Managing Existing Arrays...................................................................................................................57
C.2.3 Initializing Disk Drives........................................................................................................................59
C.2.4 Rescanning Disk Drives......................................................................................................................59
C.2.5 Secure Erasing Disk Drives.................................................................................................................59
C.2.6 Uninitializing Disk Drives...................................................................................................................60
C.2.7 Managing Global Hot Spares.............................................................................................................60
C.3 Using the ARC Utility to Modify Controller Settings.........................................................................................60
C.3.1 Opening the Controller Settings Tool ................................................................................................60
C.3.2 Applying Changes and Exiting............................................................................................................60
C.3.3 Modifying Your Controller’s Conguration........................................................................................61
C.3.4 Checking Backup Unit Status.............................................................................................................65
C.4 Formatting and Verifying Disk Drives................................................................................................................65
C.5 Locating Disk Drives..........................................................................................................................................65
C.6 Identifying Disk Drives .....................................................................................................................................66
C.7 Setting the Drive Write-Cache Policy................................................................................................................66
C.8 Updating the Controller Firmware....................................................................................................................66
C.9 Updating the Controller CPLD...........................................................................................................................67
C.10 Creating a Support Archive.............................................................................................................................67
C.11 Viewing the Event Log ...................................................................................................................................67
Appendix D Using the Adaptec Flash Utility.......................................................................................69
D.1 System Requirements.......................................................................................................................................69
D.1.1 Compatibility Notes...........................................................................................................................69
D.2 Before You Begin..............................................................................................................................................69
D.2.1 Obtaining the Firmware.....................................................................................................................69
D.2.2 Creating the Firmware Update Disk ..................................................................................................69
D.3 Running the Menu-based AFU.........................................................................................................................70
D.4 Running the AFU from the Command Line......................................................................................................70
D.4.1 AFU Commands.................................................................................................................................71
D.5 Updating the Flash Using the AFU Command Line...........................................................................................73
ix
Microsemi Proprietary and Condential. Installation and User's Guide Revision 6
Contents