User`s guide

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.