Table of Contents
3.1 General Considerations on Making Connections..................................................56
3.1.1 Host-Side Topologies ........................................................................................ 57
3.1.2 Host-Side Parameters....................................................................................... 57
3.1.3 Maximum Concurrent Host LUN Connection (“Nexus” in SCSI) ....................... 58
3.1.4 Maximum Queued I/O Count ............................................................................ 59
3.2 Fibre-Host RAID Connections .................................................................................59
3.2.1 Fibre-Host Components .................................................................................... 60
3.2.2 Fibre-Host Topologies ....................................................................................... 61
3.2.3 Fibre Cabling..................................................................................................... 62
3.2.4 Simple End-to-End Connection......................................................................... 64
3.2.5 DAS (Direct-Attached) Connection ...................................................................65
3.2.6 Switched Fabric Connection (Dual-Controller)..................................................66
3.2.7 Switched Fabric Connection (Single-Controller) ............................................... 68
3.3 SAS-Host RAID Connections ..................................................................................70
3.3.1 SxxS-R/G2240-4 Controllers in DAS (Direct-Attached Storage) Configuration.71
3.3.2 DAS (Direct-Attached Storage) Connection with Redundant Host Path............ 74
3.3.3 DAS (Direct-Attached Storage) Connection to Two Servers ............................. 76
3.4 iSCSI-Host RAID Connections ................................................................................77
3.4.1 Network & Host Connection Topologies ............................................................ 77
3.4.2 High Availability IP SAN with Redundant RAID Controller ................................79
3.4.3 Single-Controller with Fault-Tolerant Path......................................................... 81
3.4.4 High Availability IP SAN (Remote Replication Enabled).................................... 82
3.4.5 High Availability IP SAN with Port Trunk (Remote Replication Enabled)........... 84
3.4.6 Single-Controller with Trunk .............................................................................. 86
3.5 Hybrid Host Connections ........................................................................................87
3.5.1 Single Hybrid Unit Connected to FC/iSCSI Hosts............................................. 87
3.5.2 Utilizing Hybrid iSCSI ports for Data Replication............................................... 88
3.6 JBOD Connections...................................................................................................89
3.6.1 Expansion Links................................................................................................90
3.6.2 SAS Expansion Configuration........................................................................... 92
3.6.3 Configuration Rules ..........................................................................................94
3.7 Management Console Connections........................................................................96
3.8 Power Connections..................................................................................................97
3.8.1 Checklist ........................................................................................................... 97
3.8.2 Connecting Power Cords .................................................................................. 98
3.8.3 Power On Procedure ......................................................................................100
3.8.4 Power On Status Check.................................................................................. 100
3.8.5 LCD Screen .................................................................................................... 102
3.8.6 Power Off Procedure ...................................................................................... 103
4 System Monitoring
4.1 Monitoring Features...............................................................................................104
4.2 Front Panel..............................................................................................................106
4.2.1 LCD Keypad for RAID Models ........................................................................ 106
4.2.2 LED Panel for JBOD Models........................................................................... 109
4.2.3 Drive Tray LED................................................................................................ 111
4.3 Controller LED........................................................................................................ 112
4.3.1 Controller LED for RAID Models ..................................................................... 112
4.3.2 Controller LED for JBOD Models .................................................................... 114
4.3.3 Restore Default LED for RAID Models............................................................ 115
4.3.4 Ethernet Management Port LED for RAID Models.......................................... 115
4.3.5 Fibre-Host Port LED for FC RAID Models....................................................... 116
4.3.6 SAS-Host Port LED for SAS RAID Models ..................................................... 117
4.3.7 iSCSI-Host Port LED for iSCSI RAID Models ................................................. 118
4.4 PSU LED.................................................................................................................. 119
4.4.1 S12x-Rxxx Models and S16 RAID Power Supply Unit LED............................ 119
4.4.2 S12x-Gxxxx Models and S24 RAID Power Supply LED ................................. 120
4.4.3 S12x-Rxxxx Models and S16 RAID System Cooling Module LED.................. 121
4.4.4 S12x-Gxxxx Models RAID System Cooling Module LED................................ 121
4.4.5 S24 RAID System Cooling module LED ......................................................... 122
4.5 Alarms and I2C Bus................................................................................................122
4.5.1 Audible Alarms ................................................................................................ 122
4.5.2 I
2
C................................................................................................................... 123
4.6 Restoring Default System Settings.......................................................................123
4.6.1 Restoring Default Settings for Dual-Controller Models.................................... 123
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