User guide

CommentsArea
When configuring interswitch links (ISLs) between a 16 Gbps platform and an 8 Gbps platform,
the ISL ports must be configured for E_Port only.
Optics
FPGA version 0x1C on the HP DC SAN Director Multiprotocol Extension Blade is not supported
with Fabric OS 7.0.0c. The FPGA version can be checked by issuing the bladevershow
command.
Serviceability
zDAC may not give reliable results. The SIOCA tool run from HMC on System z performs a
similar function and therefore may not give reliable results as well.
Serviceability
When using HP Network Advisor to upgrade/downgrade code, in some instances the status
bar is not updated and left blank. If the status bar is blank, use the Fabric OS
firmwaredownloadstatus command to validate the status of code upgrade/downgrades.
Serviceability
Under certain circumstances, enabling multiple Traffic Isolation Zones with failover disabled
may cause some frames to be dropped due to the timing when paths are re-routed while the
Traffic Isolation Zones
zones are being implemented. To avoid this, all Traffic Isolation Zones should be enabled
with failover enabled first, so that all desired routes are established.
Seek assistance from service support before attempting to configure and enable this feature.Traffic Isolation Zones
Seek assistance from service support before attempting to enable Virtual Fabrics or use the
XISL (Base Switch ISL) capability.
Virtual Fabrics
If a port gets assigned a port address of 0xFE in an Open System logical switch, an RSCN
is sent by Fabric OS on behalf of port address 0xFE during CP failover or firmware download.
This may result in an IFCC for any FCP channel running traffic to port address 0xFE.
Virtual Fabrics
Table 7 Recommended fencing criteria
ValueCriteria
25 per minuteITW (Invalid Transmission Words)
3 per hourCRC (Cyclical Redundancy Check)
2 per minuteProtocol Errors
7 per minuteState Change
3 per minuteLink Reset
Interoperability
When cascaded to other switches, referred to as a fabric, all switches in the fabric must be at
Fabric OS 6.4.2a before upgrading to Fabric OS 7.0.0c. Interoperability between switches at
Fabric OS 6.4.2a and 7.0.0c is supported. However, the recommended best practice is to have
all switches in the same fabric at the same code level.
The next section indicates supported intra-fabric interoperability between hardware platforms,
supported management software levels, and recommended firmware versions.
FICON hardware/firmware/software interoperability with Fabric OS 7.0.0c
Interoperability is supported with Fabric OS 7.0.0c between the following platforms:
• HP StorageWorks DC SAN Backbone Director Switch
• HP StorageWorks DC04 SAN Director Switch
• HP SN8000B 8-Slot SAN Backbone Director Switch
• HP SN8000B 4-Slot SAN Director Switch
• HP 8/80 48-ports Enabled SAN Switch
Additional Considerations for FICON Environments 43