HP StorageWorks Disk Array XP operating system configuration guide: MPE/iX (A5951-96145, November, 2005)

No existing MPE/iX b

oot disk available and the disk

array is Fibre Chan

nel switch connected

If you have no boot

disk and the array is connected to a Fibre Channel switch, the

MAPPER2 utility CANNOT b e used to determine the I/O paths for the disk array

devices. Instead, you need to derive the primary boot path information from the known

I/O path of the A67

95A Fibre Channel HBA (recorded a t hardware installation time)

and the known conﬁguration of LUNs within the d isk array (established earlier with

Command View XP or LUN Conﬁguration Manager). Additional p ath information must

be obtained by LAN conne ction of a suitable web browser to the Fibre Channel switch.

Primary boot path format for Fibre Channel devices

In order to form the desired primary I/O boot path for the disk array to be used as Ldev

1, you will be com bining three pa r ts of the I/O path to make the whole I/O path in the

format required by processor PDC for boot paths:

• The part of the I/O path that belongs to the A 6795A Fibre Channel HBA, plus

• The part of the I/O path that b elongs to the disk array’s Fibre Channel interface

(the N-Po r t), plus

• The part of the I/O path that gives the SCSI target ID and LUN information for

a LUN within the disk array.

PDC on A-Class and N-Class systems r equires the following format for combining these

I/O path par ts:

HBA I/O Path Part FC N-Port I/O Path Part SCSI LUN I/O Path Part

BC/ BC/ BC/

Card

Domain

Area

Port Bus# Target ID

LUN

0/ 6/ 0/

You should already know the HBA I/O pa th, recorded when the HBA hardware was

installed and also the SCSI LUN I/O path. The following section explains how to use

a web browser to determine the FC N-Port I/O path needed to complete the whole

primary boot path.

Determining the FC N-Port I/O path

Using a web browser, navigate to the address of your Fibre Channel switch, where you

will see a display similar to the one below. Details may differ depending on switch

model and ﬁrmware level. Look for the “Name Server” control button. In the example

below, it is the third button down from the top on the left side of the display.

Bootingfromthearray