Installing a QLogic adapter on an Intel or AMD host system running Linux

This section describes how you install a QLogic fibre-channel adapter card on an Intel™ or AMD host system running the Linux operating system.

Notes:

Not all QLogic adapters and drivers are supported on all Intel hosts running Linux. For details about models, versions of operating systems, and releases that the storage unit supports for these host systems, see the Interoperability Matrix at http://www.ibm.com/servers/storage/disk/ds6000/.
The following steps are an example configuration for a QLogic QLA23xx, and QLA246x adapter cards. The configuration for your adapter might differ.

Single- and dual-port fibre-channel interfaces with the QLogic adapter cards support the following public and private loop modes:

Target
Public initiator
Private initiator
Target and public initiator
Target and private initiator

Single- and dual-port fibre-channel interfaces with the QLogic adapter cards support the following fabric attach modes:

Public loop
Private loop
Fabric

Note: When you are connecting through a fibre-channel switch, configure the QLogic adapter ports and fibre-channel switch ports to autonegotiate speed and topology. This allows the correct speed and topology to be configured automatically.

Perform the following steps to download and configure a QLogic adapter:

Install the QLogic adapter card in the host system. If the card is not being connected directly to the storage unit or to a fabric switch port, install a loop-back connector, which is usually supplied with the adapter card.
Connect the cable to the storage unit port.
Restart the server.
Note: If the server is designed for hot plug PCI, see the server documentation for specific directions for hot plug PCI devices.
During the restart operation of the server, press Ctrl+Q to get to the FAST!Util menu panel. Use the QLogic FAST!Util utility to configure specific parameters. For instructions about using the menu system, see the QLogic documentation that is supplied with the adapter card.

Use the FAST!Util utility to set the parameters to the values that are listed in Table 1.

Table 1. Recommended settings for the QLogic adapter card for an Intel or AMD host running Linux
Parameters	Recommended settings
Link down timeout	30
Basic Input/Output System (BIOS)	Disabled (if not configuring for SAN/Remote Boot) Enabled (if configuring for SAN/Remote Boot)
Frame size	2048
Loop reset delay	5 (minimum)
Adapter hard loop ID	Disabled
Hard loop ID	0
Execution throttle	100
Fast command posting	Enabled
>4 GB addressing	Disabled (for 32-bit systems)
LUNs per target	0 or 128
Enable LIP reset	No
Enable LIP full login	Yes
Enable target reset	Yes
Login retry count	60, if you are not running a multipath driver 8, if you are running a multipath driver
Port down retry count	60, if you are not running a multipath driver 8, if you are using a multipath driver
Driver load RISC code	Enabled
Enable database updates	No
Disable database load	No
IOCB allocation	256
Extended error logging	Disabled (You might want to enable this parameter if you use debugging.)
Type of connection	Loop only Point-to-point Loop preferred (If you cannot use arbitrated loop, then default to point-to-point.) Point-to point, otherwise loop (If you cannot use point-to-point, default to arbitrated loop.) Note: If you connect the storage unit directly to the host system, the option that you select must match the port connections on the storage unit.