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Spectra Logic T680 Computer Drive User Manual

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Connecting the Cables

May 2010 Spectra T200, T380, T680, T950, or T-Finity Library

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Two SCSI Bus Configuration Figure 14illustratesdaisychainingthefour

drivesinaDBAontwoseparateSCSIbusesandconnectingthemtotwo

hosts.Thistypeofcablingisusedwhenmultiplehostswillbesharingthe

libraryresources.Thelibraryistypicallydividedintopartitions,as

describedinthelibrary’sUserGuide.Eachpartitionisdedicatedtoa

differenthost.

Note: AlwaysmakesurethattheSCSIbusisterminatedbyinstallinga

terminatoreitheronthedriveoronthebusexpansionmodule.

Figure 14 Daisy-chaining direct-attach SCSI drives in a DBA on two SCSI buses.

Drive 3

Drive 1 Drive 2

Drive 4

Internal SCSI connection (DBA to drive)

Drive Bay Assembly

LVD SCSI cable

Internal SCSI connector (DBA to drive)

SCSI terminator

External SCSI connector (Bus expansion module or drive)

Bus expansion

module

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