Xyratex RS-1600-FC-SBD, Installation And User Manual

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Introduction
7
Caution All mandatory settings must be observed in order for the RS-1600-FC-SBD system to function correctly.
Important Switch settings are only read at Power On.
Note The Ops Panel is not user replaceable.
1.3.3 SBD Input/Output Module
The RS-1600-FC-SBD and RS-1602-FC-SBD storage subsystems each include an enclosure with rear
facing bays which house two SBD modules. These are Loop Resiliency Circuit (LRC) Input/Output
modules with integrated 20-port Fibre Channel Arbitrated Loop Switch.
The plug-in SBD modules have been designed for integration into a RS-1600-FC-SBD or RS-1602-FC-
SBD storage subsystem, providing external FCAL cable interfacing with the host computer system
The FC-AL Backplane incorporates connection to each of the switch ports within the SBD modules.
At any host port this appears as one FC-AL logical loop.
The SBD module internal processor monitors error conditions on each disk drive port and will
automatically isolate device that causes excessive FC errors or cannot communicate correctly. Under
these conditions the drive’s amber LED will be set to Flash and the status (2Gb) LED on the SBD module
will Flash to indicate which loop the problem has been identified on.
Table 1–1 Ops Panel Switch Functions ( Default settings for RS-1600-FC-SBD or RS-1602-FC-SBD
SBD module usage at 2Gb/s)
Switch
Number
Function Recommended Setting Definition
1 Loop Select,
Single (1x16)
On SBD operated on single loop of 16 drives
Mandatory
2 Not Used
3 Not Used
4 Not Used
5 & 6 Not Used
7 & 8 Drive Loop Speed
Select Sw7 Sw8
On Off Force 2Gb/s
Off Off Force 1Gb/s
9 & 10 Drive Addressing
Mode Selection Sw9 Sw10
On On Mode 0
Off On Mode 1
11 SOFT SELECT On Select functions using the hardware
switches
12 Not Used