Take full advantage of the capabilities of Amazon Web Services and automated cloud operation. ... Microsoft Exchange 2013 on VMware Best Practices … When manageability is a concern, group VMDKs and SQL Server files with similar I/O characteristics on common LUNs while making sure that the underling physical device can accommodate the aggregated I/O requirements of all the VMDKs. Please refer to the table in the referenced document for this. Prior to joining VMware in 2012 , Sudhir has worked for close to 20…, Is not meant to be by any way, any final recommendation, whether to enable NUMA at the database level or not, contains results that I got in my lab running a load generator SLOB against my workload, which will be way different than any real-world customer workload, [root@sc2esx65:/vmfs/volumes/5e13bc65-eea0e494-77bb-246e96d08eca/Oracle19c-BM] cat Oracle19c-BM.vmx | grep -i PreferHT, [root@sc2esx65:/vmfs/volumes/5e13bc65-eea0e494-77bb-246e96d08eca/Oracle19c-BM], Is not meant to be by any way, any final recommendation, whether to enabled NUMA at the database level or not, Performance Best Practices for VMware vSphere 7.0, Enable Oracle NUMA support with Oracle Server Version 11gR2 (Doc ID 864633.1), Oracle NUMA Usage Recommendation (Doc ID 759565.1), https://blogs.vmware.com/apps/2017/01/oracle-vmware-collateral-one-stop-shop.html, No downtime Storage vMotion of Oracle RAC Cluster using shared vmdk’s with multi-writer attribute from one vSAN to another vSAN Cluster using VMware HCI Mesh, Backing up Oracle Workloads (RAC & Non-RAC) with VMware Snapshot Technology, SAP HANA on vSphere 7 Update 1 – vSphere Clustering Service (vCLS), Microsoft Azure VMware Solution – Eat Your Cake and Have it, too, Oracle Real Application Cluster (RAC) Support on VMware Clouds, Monitoring and Rightsizing Memory Resource for virtualized SQL Server Workloads, Is not meant to be a deep dive on ESXi NUMA constructs, is meant to raise awareness of the importance to test one’s database workload with / without Oracle NUMA and then make an informed decision whether to enable Oracle NUMA or not. It is strongly recommended to evaluate the performance before and after enabling NUMA in a test environment before going into production. Turn your data into revenue, from initial planning, to ongoing management, to advanced data science application. Use of trademarks without permission is strictly prohibited. Used incorrectly and during times of memory over-commit pressure, SQL Server instability could occur as a result. This book, Performance Best Practices for VMware vSphere 6.7, provides performance tips that cover the most performance-critical areas of VMware vSphere® 6.7. The book … vSphere 5.0 and later includes support for exposing virtual NUMA topology to guest operating systems, which can improve performance by facilitating guest operating system and application NUMA optimizations. When using NUMA, try to fit the VM within a single node to avoid latencies accessing memory on remote nodes. The SQL Server Soft-NUMA feature was introduced to react on the growing number of cores per pCPU. *)= .*|numa:. It’s always preferable to right size memory over hot plug. This installs a SCSI driver within the VM that … In practice, this works to reduce memory access latency, as each NUMA node has allocated memory that it can quickly access. Well, does it mean that all Wide VM’s will perform better than non-wide VM’s using HT within a NUMA node? Follow the general Best Practices of SQL Server on the Operating System, SQL Server Instance and database levels. If using iSCSI, you should dedicate the network adapters to either network communication or iSCSI, but not both. *)= .*|numa:.*|numaHost:. ========================================== Test Case 1 – 3 : BIOS NUMA=On , preferHT=False ==========================================, Verify the VM PreferHT setting is set to FALSE, [root@sc2esx65:/vmfs/volumes/5e13bc65-eea0e494-77bb-246e96d08eca/Oracle19c-BM] cat Oracle19c-BM.vmx | grep -i PreferHT numa.vcpu.PreferHT = “FALSE” [root@sc2esx65:/vmfs/volumes/5e13bc65-eea0e494-77bb-246e96d08eca/Oracle19c-BM], Thanks to Frank Denneman post which had this very useful command to show the VM NUMA configuration with VPD and PPD – it shows 2 NUMA nodes, [root@sc2esx65:~] vmdumper -l | cut -d \/ -f 2-5 | while read path; do egrep -oi “DICT.*(displayname.*|numa.*|cores.*|vcpu.*|memsize.*|affinity. When running an Oracle database Version 11.2 in a NUMA capable environment, Oracle will not by default detect if the hardware and operating system are NUMA capable and enable Oracle NUMA support. ... as AHV does not have the construct of a virtual storage controller. Optimize and modernize your entire data estate to deliver flexibility, agility, security, cost savings and increased productivity. Networking .