Single FC-HBA v Dual FC-HBA

From: Paul Porcelli (Paul.Porcelli@aggreko.co.uk)
Date: Tue Feb 10 2004 - 09:26:18 EST


Hi folks,
we are buying a V440 and will be attaching it to
an SE6960 for storage.
We want to have two FC-HBA's for redundant paths to
the storage.
Our Sun reseller has offered us the following options:
*******************
2Gb PCI Dual Port Fibre Channel Host Bus
Fully Redundant Paths to Switches, Multipaths to Disk

OR

2Gb PCI Single Port Fibre Channel Host Bus
Single Path to Each Switch - Redundancy but NO Multipath
*******************

Could someone explain why there is no multpathing to the
disks with the 2 Single Port HBA's ?
What would multipathing give us ?

Thanks.
==
Paul

Visit us at www.aggreko.com

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