Spectra T950 - Page 74

Chapter 2 — Architecture Overview Fibre Channel Connectivity
November 2016 User Guide—Spectra T950 Library
74
Partitions Using QIP-Attached SCSI Drives
WhenapartitionincludesSCSIdrives,anF‐QIPisrequiredtoprovidethe
connectivitytothehost.EachF‐QIPhastwoexternalportsandprovides
connectivityforuptofourSCSIdrives.Ifapartitioncontainsmorethan
fourdrives,additionalF‐QIPsarerequiredtoprovidetheconnectivityfor
thosedrives.
Notes:  AnF‐QIPusedfordriveconnectivitycanalsobeusedto
providetheroboticcontrolpath.
 TheControllerFailoverfeatureisnotsupportedforany
F‐QIPthathasSCSIdrivesconnectedtoit.TheF‐QIPpair
configuredforControllerFailovercanonlybeusedto
providetheroboticcontrolpath.
TheF‐QIPactsasabridgetoconnectSCSIdrivesintheDBAtoaFibre
Channelfabricorarbitratedloop.Figure38isasimplerepresentationof
howthedrivesandroboticsinalibrarywithasingleF‐QIP‐basedpartition
areconnectedtoaFibreChannelarbitratedlooporfabricthroughaswitch
orhub.
Figure 38 An example of an QIP-based partition with
QIP-attached drives connected to a SAN.