HP 1606 HP B-series Fabric OS 6.4.1b Release Notes (5697-0886, March 2011-incl - Page 8

Enhanced traffic isolation zones support, Lossless DLS enhancements, Access Gateway enhancements

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Enhanced traffic isolation zones support Several enhancements were made to the TI zone functionality in Fabric OS 6.4.0. Though these enhancements are mainly targeted for FICON environments, they can be used in both FICON and Open Systems environments. These changes include: • Allow same device ports to be part of multiple TI zones with failover disabled or failover enabled. • Allow devices in a failover disabled TI zone to communicate with local devices (devices attached to the same switch) that are not part of the same TI zone. • Ensure that Domain Controller connectivity between switches in a fabric is not affected by TI zone policies. Lossless DLS enhancements • Lossless DLS enables Dynamic Load Sharing for optimal utilization of the ISLs without causing any frame loss. Note that "No frame loss" can be guaranteed only when a new additional path is used to do load rebalance. "No frame loss" cannot be guaranteed on an existing data path that encounters failure. • Fabric OS 6.4.0 added support for the Lossless DLS with DPS (Exchange based routing). The In Order Delivery (IOD) capability can be enabled optionally for both Port Based Routing and Exchange Based Routing policies. In pre-Fabric OS 6.4.0, the Lossless DLS feature was supported only for Port Based Routing and IOD was always enabled. Access Gateway enhancements The following enhancements were made to the Access Gateway functionality in Fabric OS 6.4.0: • Device-based mapping-This feature allows mapping of individual NPIV logins to individual N-ports of an Access Gateway. Even if an NPIV device logs in through a different F-port of an Access Gateway, it stays mapped to the same N-port. This feature also supports the N-port failover policy. • WWN to N-port load balancing-Fabric OS 6.4.0 implemented a new WWN to N-port load balancing policy for Access Gateway. When enabled, this policy allows future NPIV logins to be automatically distributed uniformly within a port group. • Individual port level NPIV limit configuration-In Fabric OS 6.4.0 individual ports can be configured with unique NPIV login limits. This feature provides more flexibility to deploy Virtual Machines based on real system needs by allowing more NPIV logins through some ports than others. This feature is supported in both Access Gateway and Switch modes. Virtual fabrics enhancements Fabric OS 6.4.0 added support for the Dynamic Area Addressing for the Default Switch in DC SAN Backbone and DC04 SAN Directors when VF is enabled. This enables several capabilities in the Default Switch in DC SAN Backbone and DC04 SAN Directors which could not be supported in pre-Fabric OS 6.4.0 releases. These capabilities include the following: • Ability to assign any area to a port without doing portswap • Support for WWN based PID assignment in the Default Switch • Port mirroring support for devices directly attached to 8 Gb 48- and 64-port blade ports in the Default Switch • Maximum NPIV limit support of 255 devices per port for these blade ports within the Default Switch 8

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Enhanced traffic isolation zones support
Several enhancements were made to the TI zone functionality in Fabric OS 6.4.0. Though these
enhancements are mainly targeted for FICON environments, they can be used in both FICON and
Open Systems environments. These changes include:
•
Allow same device ports to be part of multiple TI zones with failover disabled or failover
enabled.
•
Allow devices in a failover disabled TI zone to communicate with local devices (devices
attached to the same switch) that are not part of the same TI zone.
•
Ensure that Domain Controller connectivity between switches in a fabric is not affected by TI
zone policies.
Lossless DLS enhancements
•
Lossless DLS enables Dynamic Load Sharing for optimal utilization of the ISLs without causing
any frame loss. Note that “No frame loss” can be guaranteed only when a new additional
path is used to do load rebalance. “No frame loss” cannot be guaranteed on an existing data
path that encounters failure.
•
Fabric OS 6.4.0 added support for the Lossless DLS with DPS (Exchange based routing). The
In Order Delivery (IOD) capability can be enabled optionally for both Port Based Routing and
Exchange Based Routing policies. In pre-Fabric OS 6.4.0, the Lossless DLS feature was
supported only for Port Based Routing and IOD was always enabled.
Access Gateway enhancements
The following enhancements were made to the Access Gateway functionality in Fabric OS 6.4.0:
•
Device-based mapping
—This feature allows mapping of individual NPIV logins to individual
N-ports of an Access Gateway. Even if an NPIV device logs in through a different F-port of
an Access Gateway, it stays mapped to the same N-port. This feature also supports the N-port
failover policy.
•
WWN to N-port load balancing
—Fabric OS 6.4.0 implemented a new WWN to N-port load
balancing policy for Access Gateway. When enabled, this policy allows future NPIV logins
to be automatically distributed uniformly within a port group.
•
Individual port level NPIV limit configuration
—In Fabric OS 6.4.0 individual ports can be
configured with unique NPIV login limits. This feature provides more flexibility to deploy Virtual
Machines based on real system needs by allowing more NPIV logins through some ports than
others. This feature is supported in both Access Gateway and Switch modes.
Virtual fabrics enhancements
Fabric OS 6.4.0 added support for the Dynamic Area Addressing for the Default Switch in DC
SAN Backbone and DC04 SAN Directors when VF is enabled. This enables several capabilities
in the Default Switch in DC SAN Backbone and DC04 SAN Directors which could not be supported
in pre-Fabric OS 6.4.0 releases. These capabilities include the following:
•
Ability to assign any area to a port without doing portswap
•
Support for WWN based PID assignment in the Default Switch
•
Port mirroring support for devices directly attached to 8 Gb 48- and 64-port blade ports in
the Default Switch
•
Maximum NPIV limit support of 255 devices per port for these blade ports within the Default
Switch
8