HP StorageWorks Fabric OS 5.3.1a release notes (AA-RWEYJ-TE, May 2008)

Topic Description
4/256 SAN Director
Fansoperateatthecorrectspeed;thatis,atmaximumonbootup. 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 m essage 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
5secondsan
d that all LEDs display off on the new inserted CP.
• In a core-e
dge design, when a fully-populated 384–port 4/256 SAN Director
(populate
dwitheightFC4-48blades)isanedgeswitchinalargeSAN,it
can experience high CPU utilization and may panic if it becomes a principal
switch.HPrecommendsdeployingahighport-countswitchasbothcoreand
principa
l 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. D o 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.
• TheFC4-48BladesupportsonlycorePID(fmt1)inSecureFabricOS.
• NPIVissupportedonlyinports0to15oftheFC4-48Blade.
• 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. Por t 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
valueaslongasitsshareareavaluesare127orless.
• Before replacing an FC4-32 Blade with an FC4-48 Blade, restore ports 16–31
of the FC4-32 Blade, if th ese 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 t he 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 par ticipate 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 dow ngrading 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