nStor 4100FS, User Manual

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Chapter 1 - Getting Started
SAF-TE Disk I/O Card
8
The SAF-TE Disk I/O card has two 68-pin VHD/CI SCSI connectors which
provides the daisy-chain drive connectivity to the expansion JBOD enclosures.
The connectors are labeled “Channel 1” and “Channel 2.”
NOTE:
Termination is automatic and provided internally on the drive mid-plane
circuit board. It is configured using two sets of jumpers on the card.
Changes are not required for the RAID enclosure’s SAF-TE Disk I/O card jumpers.
These jumpers enable and disable the automatic termination. Add the jumper
(installed on both pins) to disable the automatic termination. JP8 for Channel 1
and JP7 for Channel 2. (The default position is the jumper is offset or
unjumpered, that is automatic termination is enabled.)
In daisy-chain configurations, you will be required to make changes to the
jumper settings in the enclosure’s SAF-TE Disk I/O card in that appears at the end
of the daisy-chain. In each supported configuration, a NexStor 4000S (JBOD)
enclosure will be the enclosure at the end of the daisy chain. In some
configurations multiple JBOD enclosures can appear at the end of the chain.
Those enclosures will need to have their jumper settings, JP7 and JP8, set to the
jumpered position. During installation setup, instructions are provided to
correctly configure the daisy-chain enclosure settings.
4100FS.book Page 8 Tuesday, July 8, 2003 4:35 PM