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Chapter 2 - Topologies and Operating Modes
Dual Port Single Host Connection
23
Dual Port Single Host Connection
Simplex Mode Logical View - Dual Port Single Host Connection
This topology provides an entry-level RAID storage solution for single HBA port
host systems. It offers advantages of low initial costs and is a simple direct
attached solution. It has several disadvantages over the other more robust
topologies with multiple points of failure (host server, host HBA, controller, and
cable). It also has limited bandwidth performance due to a singe Fibre loop (200
MB/sec).
In this configuration the Host I/O card switches 4 and 5 are set to the “Up”
position.
Switch 4 ties the H0 and H1 ports to the same Fibre loop. This allows both host
port on each Host I/O card with an active connection to the specific controller
host port.
Switch 5 ties the port H0 on the right Host I/O card to H0 port on the left Host
I/O card. This allows both controller host ports to be seen on any of the Host I/O
cards ports.
FC HBA 1
Host/Server (Node A)
H0
H1
C0P0
Active
C0P1
Active
Controller 0
Right Host I/O Card
Left Host I/O Card
SW 4
H0
H1
SW 4
SW 5
SW 5
4200F.book Page 23 Thursday, January 23, 2003 2:47 PM
Summary of Contents for NexStor 4200F Series
Page 2: ...4200F book Page 2 Thursday January 23 2003 2 47 PM...
Page 8: ...Table of Contents iv 4200F book Page iv Thursday January 23 2003 2 47 PM...
Page 12: ...About this Manual Features viii 4200F book Page viii Thursday January 23 2003 2 47 PM...
Page 32: ...Chapter 1 Getting Started Audible Alarm 20 4200F book Page 20 Thursday January 23 2003 2 47 PM...
Page 172: ...Index 160 4200F book Page 160 Thursday January 23 2003 2 47 PM...
Page 173: ...4200F book Page 161 Thursday January 23 2003 2 47 PM...