Disk I/O Card - Fujitsu IRF-1S series User Manual

Chapter 1 - Getting Started

Disk I/O Card

The Disk I/O card is provided for drive channel expansion. By connecting daisy
chained IRF-JBOD enclosures to the Disk I/O cards additional enclosures and
drives can be added to your system. This card's design incorporates an active
hub, and provides automatic loop regeneration (LRC) and port bypass. The loop
regeneration function will "heal" the FC-AL (Fibre Channel-Arbitrated Loop)
when components become disconnected or faulty.
There are two Disk I/O cards installed at the rear of the enclosure adjacent to the
cooling fan bay. The upper Disk I/O card provides the connection to the "Loop
0" side of the disk drives, and the lower Disk I/O card provides the connection to
the "Loop 1" side of the disk drives.
Each Disk I/O card supports Small Form-Factor Pluggable (SFP) cages to accept
either optical or copper transceivers. They are designed to support NCITS T11
Fibre Channel compliant devices at speeds of 1.0625 Gb per sec or 2.125 Gb per
second. The speed is set through a hardware jumper (JP4) located on the Disk
I/O card. Set the jumper on one pin only or offset for 2Gb mode. If you need to
configure the system for 1Gb mode, position the jumper to both pins. An LED on
the card's faceplate will illuminate to indicate the 2 Gb mode.
10
Disk I/O Card
FC-AL Loop Port
Loop Status LED
2 Gb/1 Gb Mode LED
Jumper JP4 must be set
to one pin only for 2Gb mode.
Position it on both pins for
1Gb mode.
Jumpers JP1 and JP2
must be installed on
both pins .
Disk I/O Card
Jumper JP3 must be offset
or installed on one pin only.
This enables Single Bus mode.