虚拟化实践与规划.pptVIP

* * * * * * * * Use cases * * This slide explains the data flows Virtual center exchanges with the database the configuration information Domain controller provides authorization information for the user accounts DNS Server – name resolution Web server – access to virtual center server, including SDK access License server is an independent server, which, however, requires the DNS server * Following components should be located together * * Following components should be located together Flex License files: License keys for all server-based licensed features VirtualCenter Configuration file: Governs the behavior of VirtualCenter Server and its interaction with ESX Server hosts as well as client programs, such as the VI Client. SSL certificate: The certificate used to authenticate all communication with ESX Server hosts. Upgrade files: In special circumstances, it might be necessary to make custom changes to the agent which gets pushed to ESX Server hosts as they are added to the environment * * Failure of the VirtualCenter server can be tolerarated for the short period of time. This make the failover cluster to suitable high availability solution for the virtual center. * Message make a decision to virtualize or not Pros an cons More details * * * * * * * * * * * * Historical Past Day Past Week Past Month Past Year Rollup every 30 minutes 5 min Hostd Hostd Real Timestatistics collection Database VPXD rolls up real time performance statistics to historical five minutes statistics and sends to database VirtualCenter Rollup every 2 hours Rollup every 24 hours 30 min 2 hr 24 hr Purge afterone year Overview of Performance Statistics Database Sizing for Optimal Performance Memory - databases are most efficient when given enough memory to cache their working data set Disk I/O - sufficient disk device bandwidth for log devices to prevent transactions from bottlenecking on disk I/O CPU - SQL Server is designed to use parallel processing whenever possible SQL Server’s T