LPAR Support of OSA-Express
For z990 customers or customers who use the Processor Resource/Systems Manager (PR/SM) capabilities IBM offers the Multiple Image Facility (MIF), allowing the shar- ing of physical channels by any number of LPARs. Since a port on an
IPv6 Support
IPv6 requires the use of an
more effi cient technique for I/O interruptions designed to reduce path lengths and overhead in both the host operating system and in the adapter. This benefi ts OSA- Express TCP/IP support in both Linux for zSeries and z/VM.
•The z990’s support of virtual machine technology has been enhanced to include a new performance assist for virtualization of adapter interruptions. This new z990 performance assist is available to V=V guests (pageable guests) that support QDIO on z/VM V4.4 and later. The deployment of adapter interruptions improves effi ciency and performance by reducing z/VM Control Program overhead.
Performance enhancements for virtual servers
Two important networking technology advancements are announced in z/VM V4.4 and Linux on z990:
•The high performance adapter interrupt handling fi rst introduced with HiperSockets is now available for both
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