Fujitsu PRIMERGY - Page 34

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WhenyouinstalltwoormoreSCSIcardsinaSERVER,eachSCSIcardcreatesa
separateSCSIbus.DeviceSCSIIDnumberscanbeduplicatediftheyareusedon
separateSCSIbuses.Forexample,youcanconnecttwoSCSIdevices,bothhavinga
SCSIIDof0,byconnectingoneSCSIdevicetooneSCSIbus,andtheotherSCSI
devicetotheotherSCSIbus.
SCSIterminatorsandcables
Toensurereliablecommunication,itisimportanttousehigh-qualitycablesand
terminators(calledterminatingresistors).EnabletheterminatorontheSCSIdevice
oneachendoftheSCSIbus,anddisabletheterminatorsonalltheSCSIdevicesin
between.
Note
InordertosupplythepowertotheSCSIterminatorsofthiscardtoholdthem
activatedalways,besuretoleaveboththejumpersJ2andJ4ofthiscardintheir
respectivedefaultsettings(short-circuited).
■Thiscardtermination
ThiscardterminatorissetusingtheSCSISelectutility.Thedefaultsettingis
｢Automatic｣,whichsetsterminationautomatically.Werecommendthatyouleave
theterminatorsettothedefault｢Automatic｣setting.
Note
AlltheSCSIterminatorsofthiscardarealwaysactivatedbecausethe
jumpersJ2andJ4ofthiscardareheldshort-circuited(defaultsetting).
■SCSIdevicetermination
TodeterminewhethertoterminateSCSIdevices,refertothatSCSIdevice's
documentation.
■SCSIcables
SincethecablesthatconnecttheSCSIdevicesareimportantcomponentsinensuring
stableoperation,besuretouseFujitsuproducts.
Note
WhenconnectingtwoormoreSCSIdevicestothiscard,ensurereliable
operationbylimitingthecombinedtotallengthofSCSIcablestoamaximum
of25meters.