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10 Implementing an Open IBM SAN

The following considerations need to be taken into account:

򐂰 You cannot specify a LUN size of 4.190-GB LUN for the SCSI Fibre Channel

protocol (FCP) attachment.

򐂰 You can specify 1- 32 LUNs for each attachment to an AS/400 or iSeries Fibre

Channel protocol adapter.

򐂰 Fibre Channel attached LUNS are identified as the 2105 device type on the

iSeries host system.

򐂰 You can place an AS/400 or iSeries volume in the ESS storage arrays

according to the selected host system attachment type.

For a Fibre Channel attachment, you must place the volumes in ESS RAID-5

storage arrays that have capacity available. You can spread the volumes

across arrays that are attached to multiple device adapters.

򐂰 You cannot place an AS/400 or iSeries volumes in an ESS non-RAID storage

array.

򐂰 You cannot share an AS/400 or iSeries volume with more than one Fibre

Channel system attachment.

򐂰 The number of volumes that you can create is determined by the attachment

type and by the available ESS storage array capacity.

򐂰 You can create 1 - 32 LUNs for a Fibre Channel attachment.

1.3.4 Recommended configurations for the AS/400 or iSeries

IBM recommends the following configurations:

򐂰 Install the 2766 adapter card in the AS/400 iSeries system unit or the HSL

PCI I/O towers.

Feature code 2766 is an IOA (I/O adapter).

The following must be taken into account:

1. Only one 2766 adapter is supported per I/O processor (IOP) and requires a

dedicated IOP. No other I/O adapters are supported under the same IOP.

2. Only two 2766 adapters are supported per a multi-adapter bridge.

Important: Do not use more than two 2766 adapter cards for each AS/400

or iSeries tower.

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Qlogic QLA2100F Guia do Utilizador Página 24