Other Important Notes And Recommendations; Virtual Fabrics; Frame Redirection - HP StorageWorks 4/8 - SAN Switch Release Note

Other important notes and recommendations

This section contains additional information that you should consider before you use this Fabric OS
release.

Virtual fabrics

On Virtual Fabrics-capable platforms, the Virtual Fabrics feature must be enabled after upgrading
to Fabric OS 6.2.x in order to utilize the related capabilities, including Logical Switches and Lo-
gical Fabrics.
When creating Logical Fabrics that include switches that are not Virtual Fabrics-capable, it is
possible to have two Logical Switches with different FIDs in the same fabric. Extra caution should
be used to verify that the FIDs match for all switches in the same Logical Fabric.
The aptpolicy can be configured per logical switch. The Administrator Guide indicates it is a
chassis-level setting.
In order to support non-disruptive Hot Code Load on an HP StorageWorks 8/40 SAN Switch with
VF enabled, the total zoning DB size for the entire chassis should not exceed 1MB.
Licensing behavior
When operating a switch with Fabric OS 6.2.x, some licenses may display as Unknown. This is due
to a changes in licensing requirements for some features that no longer require a license key and may
still be installed on a switch.

Frame redirection

In Fabric OS 6.2.x, Frame Redirection zoning is not allowed with Default Zoning (all access in
IM0 and default zone in IM2). This was allowed in prior releases. There is no software enforcement
to block the upgrade.
Adaptive networking/flow-based QoS prioritization
When using QoS in a fabric with 4G ports or switches, Fabric OS 6.0 or later versions must be
installed on all products in order to pass QoS info. E_Ports from the HP StorageWorks DC SAN
Backbone Director or HP StorageWorks DC04 SAN Director to other switches must come up after
6.0 is running on those switches.
Flow-based QoS is not supported on FC8 blades in the HP StorageWorks 4/256 SAN Director
Any products that are not capable of operating with Fabric OS 6.0 may not exist in a fabric with
Flow-based QoS. Major problems occur if previous generation 2G products exist in the fabric.
For the HP StorageWorks SAN Switch 4/32 and SAN Switch 4/32B, if all of the ports are E_Ports
and the switch is upgraded to Fabric OS 6.2.x, the buffers on the E_Ports are changed to utilize
the QoS model. If the switch is rebooted, 28 of 32 ports will come up in QoS mode; the last four
ports will come up in buffer-limited mode. Workarounds include disabling long distance configur-
ation for these ports or explicitly disabling QoS on other ports, freeing up buffers for the last four
ports.
FCR
All FCR switches need to be running Fabric OS 6.2.x in order to support M-EOS 239 Domain Mode
on the i10K
HP StorageWorks Fabric OS 6.2.0b release notes 21