Sun Microsystems StorEdge S1 AC100, Installation And Maintenance Manual

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Chapter 5 Maintenance Tasks 73
Note –
UltraSCSI devices (such as the StorEdge S1 storage enclosure) at the end of a
daisy-chain do not require a terminator, but some wide SCSI devices at the end of a
daisy-chain do require a terminator. Refer to the documentation that came with your
wide SCSI device to determine if it needs a terminator. Narrow SCSI devices at the
end of a daisy-chain always require a terminator.
FIGURE 5-5
Auto-termination Indication LEDs in an UltraSCSI or Wide SCSI Daisy-Chain
No Auto-termination
Host system
Indication LEDs lit
Both High and Low
Auto-termination
Indication LEDs lit