The following sections describe the various SAN components.
Within a SAN, a host bus adapter (HBA) provides the connectivity from the host com- puter system to the external Fibre Channel device.
The QLA2100 HBA is a
The QLA2100F is a short wave optical version of the QLA2100 and provides
The QLA2200 and QLA2200F HBA supports a
The QLA2200F is an SW optical version of the QLA2200 and provides fiber optic con- nectivity from the host computer system to external storage or switches.
The Dell PowerVault Fibre Channel switches (currently the PowerVault 50F and PowerVault 51F) are
The PowerVault Fibre Channel switches allow multiple servers to access a single PowerVault Fibre Channel drive array. The Fibre Channel switch functions much like an Ethernet switch. The devices (a server, a drive array, or another switch) that are attached to the switch can all communicate with each other. Without the switch, no more than two servers can attach to the same PowerVault array, due to the number of connections on each storage processor (SP) in the Dell 650F/651F disk processor enclosure (DPE).
In a fully redundant SAN configuration, at least two switches are required. Each switch connects to one SP in the PowerVault 650F/651F DPE, and, in turn, provides access to all logical unit numbers (LUNs) bound on that SP to all servers connected to
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