Brocade Communications Systems 415 Manual De Usuario

Boot over SAN (HBA only)

4

Enabling and disabling rate limiting on the adapter side using the BCU

Enter the following command to enable or disable rate limiting on the adapter side. 

NOTE

You must first enter the

 bcu port --disable <port_id> 

command, followed by the 

bcu port --enable <port_id> 

command, before the

 bcu ratelim --enable 

or 

bcu ratelim --disable 

commands take effect.

bcu ratelim - -enable <port_id> [-s <default_speed>]

bcu ratelim - -disable <port_id>

bcu ratelim - -query <port_id>

bcu ratelim - -defspeed <port_id> [<1|2|4>]

Refer to 

 on page 191 for details about this command.

Boot over SAN (HBA only)

NOTE
The Boot over SAN feature is not supported on the converged network adapter (CNA).

The boot over SAN feature allows you to target remote boot devices (LUNs on SAN storage arrays) 
from which to boot the host system. When the host’s operating system and adapter driver are 
installed on the remote device, the adapter BIOS and user-configurable boot instructions stored in 
adapter flash memory allow the host to boot from the device.

NOTE
Various operating systems require you to follow specific guidelines to enable servers to boot from a 
SAN. Understanding these requirements is key to a successful deployment of a boot over SAN 
environment. 

Boot LUNs are identified to adapter ports using the BIOS Configuration Utility and BCU commands. 
These utilities also allow you to enable or disable BIOS for booting the host system over SAN, set 
boot options, and set the port speed. Refer to the Brocade Adapters Installation and Reference 
Manual for instructions. 

After you have configured boot devices using the BIOS Configuration Utility, you can enable or 
disable BIOS for boot over SAN, set boot options, and set port speed using the HCM GUI. All 
configuration is stored in flash memory.