vSAN性能优化内容.ppt

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1、VMwarevSAN™6.6产品介绍及Anybackup适配注意事项VMwarevSANRadicallySimpleHypervisor-ConvergedStorageforVMsVMwarevSphere®+vSAN…Software-definedstorageoptimizedforVMsHypervisor-convergedarchitectureRunsonanystandardx86serverPoolsHDD/SSDintoashareddatastoreDeliversenterprise-leve

2、lscalabilityandperformanceManagedthroughper-VMstoragepoliciesDeeplyintegratedwiththeVMwarestackOverviewHarddisksSSDHarddisksSSDHarddisksSSDvSANDatastore2vSAN–StretchedClusterActive-ActivedatacentersVMwarevSAN™群集分为两个站点！每个站点都是故障域（FD）站点级保护，零数据丢失和近瞬时恢复自动故障转移5msRTT,10

3、GbETodayVMwarevSphere&vSANvSpherewitness支持数据站点之间最多5毫秒的RTT延迟10Gbps带宽需要见证服务器3vSAN架构HybridAll-Flash40KIOPSperHost90KIOPSperHostCachingReadandWriteCacheWritescached100%.ReadsgodirectlytocapacitytierCapacityTierSAS/NLSAS/SATA/Direct-attachedJBODCapacityTierFlashDevice

4、sReadsgodirectlytocapacitytierDataPersistencevSANSSDPCI-eUltraDIMMSSDPCI-eUltraDIMM混合环境极有可能存在性能瓶颈，Anybackup备份此类环境需要检查一下是否是混合模式，vsan底层默认将缓存区域的70%用于读，30%用于写；热数据自动替换冷数据；缓存最佳实践是数据量的10%1.判断架构类型4RAID-5InlineErasureCodingWhenNumberofFailurestoTolerate=1FailureToleranceM

5、ethod=CapacityRAID-53+1(4hostminimum)1.33xinsteadof2xoverhead20GBdiskconsumes40GBwithRAID-1,nowconsumes~27GBwithRAID-5RAID-5ESXiHostparitydatadatadataAllFlashOnlyESXiHostdataparitydatadataESXiHostdatadataparitydataESXiHostdatadatadataparity5RAID-6InlineErasureCo

6、dingWhenNumberofFailurestoTolerate=2FailureToleranceMethod=CapacityRAID-64+2(6hostminimum)1.5xinsteadof3xoverhead20GBdiskconsumes60GBwithRAID-1,nowconsumes~30GBwithRAID-6AllFlashOnlyESXiHostparitydatadataRAID-6ESXiHostparitydatadataESXiHostdataparitydataESXiHost

7、dataparitydataESXiHostdatadataparityESXiHostdatadataparity6硬件兼容性要求AnyserverintheVMwareCompatibilityGuideAllhardwaremustbelistedintheVMwareCompatibilityGuide>vSAN1Gb/10GbNIC，驱动、固件兼容SAS/SATAcontrollers(RAIDcontrollersmustworkin“pass-through”orRAID0”mode)，驱动、固件兼容驱动、

8、固件兼容驱动、固件兼容（等级低）8GBSDCards系统盘2.判断硬件兼容7Flash-BasedDevices(cont.)VMwareSSDPerformanceClassesClassB:5,000-10,000writespersecondClassC:10,000-20,000writespersecond