HP StorageWorks 4/8 HP StorageWorks Fabric OS 5.3.1a release notes (AA-RWEYJ-T - Page 11

Topic Description 4/256 SAN Director Fans operate at the correct speed; that is, at maximum on bootup. However, this initial speed may trigger an error message that indicates that the speed is too high (Above threshold). Disregard this message. Fans operate at the correct speed; that is, at maximum on bootup. However, this initial speed may trigger an error message that indicates that the speed is too high (Above threshold). Disregard this message. Diagnostics spinsilk test • Before moving the slider UP on a Control Processor Blade that is being activated, observe that the amber LED is not ON for the active CP for at least 5 seconds and that all LEDs display off on the new inserted CP. • In a core-edge design, when a fully-populated 384-port 4/256 SAN Director (populated with eight FC4-48 blades) is an edge switch in a large SAN, it can experience high CPU utilization and may panic if it becomes a principal switch. HP recommends deploying a high port-count switch as both core and principal switch to reduce fabric stress and provide ease of management. FC4-48 port Blade for the 4/256 SAN Director • The HP StorageWorks 4/48 SAN Director Blade requires a minimum of Fabric OS 5.2.0a. Do not insert the FC4-48 Blade into the 4/256 chassis until the chassis is running Fabric OS 5.2.0a or later. After Fabric OS has been updated and an FC4-48 has been installed, the Fabric OS will not be able to be downgraded earlier than 5.2.0a until the FC4-48 is removed. • The FC4-48 Blade supports only core PID (fmt 1) in Secure Fabric OS. • NPIV is supported only in ports 0 to 15 of the FC4-48 Blade. • Regarding long distance buffer credits, the FC4-48 has 560 credits available for long distance. The FC4-32 Blade has 624 credits available for long distance. • Regarding port mirroring, the FC4-48 is restricted to one F-port mirroring allowed between shared areas for ports 16-47. Port mirroring on ports 0-15 behaves the same as the FC4-32 Blade. • The configure command gives only a maximum login per port setting. The command allows over 127, where ports for the FC4-48 Blade will honor that value as long as its share area values are 127 or less. • Before replacing an FC4-32 Blade with an FC4-48 Blade, restore ports 16-31 of the FC4-32 Blade, if these ports are used for port swapping. Failure to do so will fault the FC4-48 Blade. The only way to restore the original settings is to add the FC4-32 Blade back into the slot and port swap the ports back to the port's default setting. • FC4-48 ports should not belong to the zone or in an administrative domain in which FICON devices reside. • The FC4-48 Blade does not support loop. Private L_Ports will be shown on these ports in switchshow, but will not participate in the fabric. • The porttest and spinfab commands on any platform will not work on E_Ports connected to an FC4-48 port. • The FC4-48 Fibre Channel port Blade is not supported to connect to the System z environments via FICON channels or via FCP zLinux on System z. To use the 4/256 SAN Director to attach to the System z environment, use the FC4-16 or FC4-32 Fibre Channel port blades. • In a zoning configuration with members D and P, where P is greater than or equal to 256, remove these configurations before downgrading to an earlier firmware version (5.1.x or 5.0.x). Otherwise, the downgrade will not be HA compatible with earlier versions. • All zones involving the shared ports (domain, port or WWN) of an FC4-48 Blade would be treated as session based in "interopmode 2" fabric configuration. HP StorageWorks Fabric OS 5.3.1a release notes 11