HP StorageWorks 1606 HP StorageWorks FOS 6.3.0b Release Notes (5697-0360, Apri - Page 28
Virtual Fabrics, Licensing behavior, Adaptive Networking/flow-based QoS prioritization
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Virtual Fabrics • On VF-capable platforms, the VF feature (initially supported with FOS 6.2.0a) must be enabled in order to utilize the related capabilities, including logical switches and logical fabrics. • When creating logical fabrics that include switches that are not VF-capable, it is possible to have two logical switches with different FIDs in the same fabric. Be sure to verify that the FIDs match for all switches in the same logical fabric. • In order to support nondisruptive HCL on an 8/40 SAN Switch with VF enabled, the total zoning DB size for the entire chassis should not exceed 1 MB. Otherwise, ports may be re-initialized, causing frame drops during an HCL if the switch has a zoning database that is 1 MB or larger. • A switch with VF enabled cannot participate in a fabric that uses IP filter or password database distribution or administrative domains. You must disable the VF feature before deploying it in a fabric that uses these features. • VF is not supported on the 1606 Extension SAN switch. • VF-dedicated ISLs are supported on the DC SAN Director Switch Multiprotocol Extension Blade. XISLs are not supported. • On an HP StorageWorks 8/40 SAN switch with Virtual Fabrics enabled, ports may be re-initialized causing frame drops during a hot code load if the switch has a zoning database that is 1MB or larger in size. To prevent this from occurring, ensure the zoning database is less than 1MB when activating new firmware. Licensing behavior When operating a switch with FOS 6.3.x, some licenses may be displayed as Unknown. This is due to changes in licensing requirements for some features that no longer require a license key and may still be installed on a switch. Adaptive Networking/flow-based QoS prioritization • When using QoS in a fabric with 4-Gb ports or switches, FOS 6.0 or later must be installed on all products in order to pass QoS information. E_Ports from the DC SAN Backbone Director or DC04 SAN Director to other switches must come up after 6.0 is running on those switches. • Flow-based QoS is not supported on any 8-Gb Fibre Channel blades in the 4/256 SAN Director. • Any products that cannot operate with FOS 6.0 cannot exist in a fabric with flow-based QoS. Major problems occur if previous-generation 2-Gb products exist in the fabric. • Beginning with the FOS 6.2.1 firmware, the default behavior of the Adaptive Networking QoS feature was changed as follows: • Default QoS behavior is disabled on 4-Gb platforms. • Default QoS behavior is disabled on the Extended Fabrics E_Ports on both 4-Gb and 8-Gb platforms. This fix addressed the following unexpected behaviors that occurred when the Adaptive Networking QoS feature was enabled by default in earlier FOS releases: • Splitting of a single trunk group into multiple trunk groups upon port toggle, since the toggled ports come online with QoS enabled, while the remaining ports in the trunk group have QoS disabled. • Fewer buffer credits being made available to normal E_Ports after a port toggle, even when QoS is not being utilized. • An unexpected change to a fill-word configuration on an Extended Fabrics E_Port after a port toggle. If an Extended Fabrics E_Port is using IDLE primitives as fill words, and if that port toggles, the fill-word configuration is changed to use ARB primitives. 28