IBM DS4000 FC manual Selectable boot settings, Enable LIP Reset

Enable LIP Reset

This setting determines the type of loop initialization process (LIP) reset that is used when the operating system initiates a bus reset routine. When this setting is Yes, the driver initiates a global LIP reset to clear the target device reservations. When this setting is No, the driver initiates a global LIP reset with full login. The default is No.

Enable LIP Full Login

This setting instructs the ISP chip to log in again to all ports after any LIP.

The default is Yes.

Enable Target Reset

This setting enables the drivers to issue a Target Reset command to all devices on the loop when a SCSI Bus Reset command is issued. The default is Yes.

Login Retry Count

This setting specifies the number of times the software tries to log in to a device. The default is 30 retries for Microsoft Windows Operating System environment. Please review the device driver README for the correct setting in other operating system environments.

Port Down Retry Count

This setting specifies the number of seconds that the software waits before it retries a command to a port returning port down status. The default is 30 seconds. In a DS4000 storage server configuration with the maximum number of drive expansion enclosures or in MCSC configurations, you should increase this setting to 70.

Link Down Timeout

This setting specifies the number of seconds the software that the software waits for a link down to come up. The default is 30 seconds.

Extended Error Logging

This setting provides additional error and debug information to the operating system. When enabled, events are logged into the Windows Event Viewer. The default is Disabled.

Operation Mode

This setting specifies the reduced interrupt operation (RIO) modes, if supported by the software driver. RIO modes allow posting multiple command completions in a single interrupt. The default is 0.

Interrupt Delay Timer

This setting contains the value (in 100-microsecond increments) that is used by a timer to set the wait time between accessing (DMA) a set of handles and generating an interrupt. The default is 0.

Selectable boot settings

When you set the Selectable Boot Settings option to Enabled, you can select the worldwide port name of the fibre-channel hard disk from which you want to start up (boot). When this option is set to Enabled, the node starts from the selected fibre-channel hard disk, ignoring any IDE or SCSI hard disks that are attached to your server. When this option is set to Disabled, the Boot ID and Boot LUN parameters have no effect.

The BIOS code in some new systems supports selectable start up, which supersedes the Fast!UTIL selectable start up setting. To start from a fibre-channel

26IBM System Storage DS4000 FC 4Gbps PCI-X Single/Dual Port HBA: Installation and User’s Guide