NetApp ONTAP Select On IBM Solution Architecture

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NetApp ONTAP Select on IBM CloudSolution ArchitectureDate: 2017–12–14 Copyright IBM Corporation 2017Page 1 of 12

Table of Contents12Introduction. 41.1About NetApp ONTAP Select . 41.2Key Benefits . 4Design . 52.1Overview. 52.2Physical Infrastructure . 6Physical Host Design. 6Physical Storage Design . 62.3NetApp ONTAP Select Deployment. 7ONTAP Select host configuration . 8ONTAP Select networks . 82.4Cluster configuration . 102.5Scale . 102.6Backup of management components . 102.7Replication . 102.8Software updates . 10Appendix A—License Requirements . 11Appendix B—Reference . 12List of FiguresFigure 1 VMware vCenter Server on IBM Cloud .4Figure 2 NetApp ONTAP Select on VMware vCenter Server High Level Components .5Figure 3 NetApp ONTAP Select deployment .6Figure 4 NetApp ONTAP Select network topology.9List of TablesTable 1 Physical host configurations and options.6Table 2 Physical disk configurations and options .7Table 3 Virtual machine storage placement .7Table 4 ONTAP Select Deploy virtual machine configuration .8Table 5 ONTAP Select virtual machine configuration .8Table 6 ONTAP virtual machine network configuration .9Table 7 ONTAP data port group .9Table 8 ONTAP internal port group .9Table 9 License requirements . 11 Copyright IBM Corporation 2017Page 2 of 12

Summary of ChangesThis section records the history of significant changes to this document. Only the most significant changesare described here.VersionDateAuthorDescription of Change1.02017–12–14Jack BenneyFrank ChodackiDaniel De AraujoBob KellenbergerSimon Kofkin–HansenScott MoonenInitial Release Copyright IBM Corporation 2017Page 3 of 12

1 Introduction1.1 About NetApp ONTAP SelectThe purpose of this document is to define and describe the NetApp ONTAP Select architecture for thevCenter Server offering deployed in the IBM Cloud. Specifically, it will detail the components of thesolution and high-level configuration of each component in the design. This solution is considered to be anadditional component and extension of the vCenter Server solution offering on IBM Cloud. As a result, thisdocument will not cover the existing configuration of the foundation solution on IBM Cloud. Therefore, itis highly recommended to review and understand the VMware on IBM Cloud solution architecture locatedon the IBM Architecture Center before reading this document.Figure 1 VMware vCenter Server on IBM Cloud1.2 Key BenefitsNetApp ONTAP Select is a software–only version of NetApp ONTAP, providing software–defined storage(SDS) capabilities. ONTAP Select virtualizes the local storage on VMware vSphere hosts, providingenterprise class storage management. While IBM Cloud provides several file, block, and object storageofferings, many of these are shared infrastructure. NetApp ONTAP Select on IBM Cloud hosts yourstorage on dedicated infrastructure and provides familiar NetApp capabilities, including: Dedicated highly available clustered NFS, CIFS, and iSCSI storageNetApp SnapMirror, SnapVault, FlexClone, and SnapRestoreDeduplication and compressionNot all NetApp ONTAP features are supported by ONTAP Select. Copyright IBM Corporation 2017Page 4 of 12

2 Design2.1 OverviewThe NetApp ONTAP Select solution complements the VMware vCenter Server on IBM Cloud offering byproviding storage virtualization services. NetApp ONTAP Select runs within a VMware cluster andvirtualizes the local storage on the vSphere hosts.NetApp supports a collocated deployment model, where ONTAP Select coexists in the same cluster asother workloads. However, this design deploys NetApp ONTAP Select using the recommended dedicatedmodel, where other workloads are not expected to share the same cluster as ONTAP Select. As a result, thisdesign sizes the hardware configuration only based on the requirements for ONTAP Select.Figure 2 NetApp ONTAP Select on VMware vCenter Server High Level ComponentsThe storage provided by your NetApp ONTAP Select instance can be used by other VMware vCenterServer instances, VMware Cloud Foundation instances, or other infrastructure deployed in your IBM Cloudaccount such as virtual server instances (VSIs) or bare metal servers running various operating systems orhypervisors. You can attach the NetApp ONTAP Select storage using NFS, CIFS, and iSCSI protocols.Figure 3 illustrates the components of the ONTAP Select deployment, including an ONTAP Selectdeployment VM that deploys the cluster, and four ONTAP Select cluster VMs, one per host. Copyright IBM Corporation 2017Page 5 of 12

Figure 3 NetApp ONTAP Select deployment2.2 Physical InfrastructureThis design notes the differences between the NetApp ONTAP Select architecture and the VMwarevCenter Server solution architecture on which this architecture depends.Physical Host DesignThis design varies the physical compute configuration. The host CPU and memory requirements arereduced because the solution is sized only for NetApp use. The host disk requirements are increasedbecause the solution requires local storage in each host for ONTAP Select’s storage virtualization. Thissolution is deployed using exactly four hosts; no additional hosts will be added to the cluster afterdeployment.The physical host hardware comprises a 4U chassis with the following possible configurations:OptionCPUMemoryNetworkONTAP drivesHigh performanceDual Intel Xeon E5-2650v4, 24 cores total128 GB4 x 10 Gbps uplinksUp to 22 drivesHigh capacityDual Intel Xeon E5-2650v4, 24 cores total64 GB4 x 10 Gbps uplinksUp to 34 drivesTable 1 Physical host configurations and optionsNetApp ONTAP Select is available in both Standard and Premium deployments. The Premium deploymentand licensing utilizes virtual machines with 64GB memory, and is required when using SSD storage, butoptional when using SATA drives. The Standard deployment and licensing utilizes virtual machines with16GB memory, and is the normal choice when using SATA drives. This architecture specifies the use ofthe Standard deployment for the high capacity SATA configuration.Physical Storage DesignThis design uses two 1TB SATA disks in a RAID–1 configuration for local hypervisor storage as specifiedin the vCenter Server solution architecture. Additional disks are added to the hosts for use by NetAppONTAP Select according to the choice of configuration: Copyright IBM Corporation 2017Page 6 of 12

OptionDisksRAID configurationHigh performanceOptionsRAID 5, 1 group with 1 spare, writeback mode,drive cache disabled High capacity22 x 1.9 TB SSD22 x 3.8 TB SSDOptions Options10 x 4 TB SATA34 x 4 TB SATA 10 drives: RAID 5, 1 group with 1 spare34 drives: RAID 5, 3 groups (10 disks,12 disks, 12 disks), each with 1 spareAll cases: RAID controller in writeback mode;drive cache disabledTable 2 Physical disk configurations and optionsFor NetApp to take advantage of flash storage optimizations in the high–performance configuration, youmust first ensure SSD disks are known to ESXi as local SSD disks. You can mark them as such using theesxcli command, for example:esxcli storage nmp satp rule add --satp VMW SATP LOCAL \--option "enable local enable ssd" \--device naa.600605b00aacaad0203fd2f20562bf35The vCenter Server solution architecture specifies the use of IBM Cloud NFS shared storage or vSAN localdisk storage for hosting the VMware cluster storage. This design modifies that specification by removingIBM Cloud NFS shared storage and replacing it with NFS storage hosted by the NetApp ONTAP Selectcluster itself. While the virtual machines are initially deployed to local storage on the hosts, they areultimately migrated to the following locations:Virtual machineStorage placementVMware vCenter ServerNetApp ONTAP Select NFS datastoreVMware Platform Services ControllerNetApp ONTAP Select NFS datastoreVMware NSX ManagerNetApp ONTAP Select NFS datastoreVMware NSX ControllersNetApp ONTAP Select NFS datastoreVMware NSX Edge Services GatewaysNetApp ONTAP Select NFS datastoreIBM Cloud DriverNetApp ONTAP Select NFS datastoreNetApp ONTAP Select Deploy VMNetApp ONTAP Select NFS datastoreNetApp ONTAP Select Cluster VMs (one per host)ESXi local datastoreTable 3 Virtual machine storage placementThe hosts are configured to connect to the ONTAP datastore using routes and a subnet in the SDDCDPortGroup-NFS port group as specified in the vCenter Server solution architecture.2.3 NetApp ONTAP Select DeploymentNetApp ONTAP Select deployment begins with the deployment of the ONTAP Select Deploy virtualmachine, which is used to deploy the ONTAP Select cluster virtual machines. This virtual machine has thefollowing requirements. Its portable IP address is allocated from the same management subnet as theVMware infrastructure, and it is configured to use the IBM Cloud back–end customer router (BCR) as itsgateway.ComponentConfigurationCPU2 vCPU Copyright IBM Corporation 2017Page 7 of 12

ComponentConfigurationRAM4 GBDisk requirements40 GBNetworkVLAN Private A, portable IP, using SDDC-DPG-Mgmt port groupGatewayIBM Cloud BCRTable 4 ONTAP Select Deploy virtual machine configurationThe ONTAP Select Deploy virtual machine deploys four ONTAP Select cluster virtual machines, one toeach host in the cluster. These four virtual machines have the following requirements; their networking isdiscussed in the following section:ComponentConfigurationCPU4 vCPURAMDependent on the configuration: Disk requirements16GB for high capacity, low performance (Standard)64GB for high performance, low capacity (Premium)267 GB total for several disks: 10GB system boot disk120GB system core dump disk556MB mailbox disk2 68GB cluster root disksTable 5 ONTAP Select virtual machine configurationONTAP Select host configurationWhen configuring the ONTAP Select cluster for the high–performance configuration using SSD disks,enable flash optimization when configuring each host. For example:(ONTAPdeploy) host configure --host-id 10.173.111.157 . . . \--enable-flash-optimizationONTAP Select networksThe ONTAP Select virtual machines each have six network interfaces. The first two interfaces are used formanagement and for client data access, while the last four interfaces are used for intra–clustercommunication. Based on NetApp guidelines, the external and internal communications are segregated onseparate private VLANs in the vCenter Server environment. These interfaces are associated with differentport groups on the SDDC-Dswitch-Private vNetwork distributed switch (vDS) as indicated below.NICPurposeVLANPort GroupSubnete0aManagementPrivate ASDDC-DPortGroup-MgmtExisting portablemanagement subnet, usingNSX ESG as publicgateway for NetApplicense reportinge0bDataPrivate ASDDC-DPG-ONTAPDataNew private portablesubnet ordered for data usee0cCluster networkPrivate BSDDC-DPG-ONTAPInternalLink locale0dCluster networkPrivate BSDDC-DPG-ONTAPInternalLink local Copyright IBM Corporation 2017Page 8 of 12

NICPurposeVLANPort GroupSubnete0eRAID SyncMirrorPrivate BSDDC-DPG-ONTAPInternalLink locale0fHA interconnectPrivate BSDDC-DPG-ONTAPInternalLink localTable 6 ONTAP virtual machine network configurationThe SDDC-DPG-Mgmt port group is specified in the vCenter Server solution architecture. The additionalport groups for ONTAP Select’s use are configured as follows:Port Group NameSDDC-DPG-ONTAPDatavDSSDDC-Dswitch-PrivatePort bindingEphemeralVLAN typeNoneLoad balancingRoute based on originating virtual portActive uplinksuplink1 and uplink2Table 7 ONTAP data port groupPort Group ort bindingStaticVLAN typeVLAN, Private BLoad balancingRoute based on originating virtual portActive uplinksuplink1 and uplink2Table 8 ONTAP internal port groupNote that ONTAP Select uses jumbo frames on the internal port group.Figure 4 illustrates the network topology of the NetApp ONTAP Select cluster, highlighting the separateexternal and internal networks on differing VLANs.Figure 4 NetApp ONTAP Select network topology Copyright IBM Corporation 2017Page 9 of 12

2.4 Cluster configurationNetApp ONTAP Select provides availability by locating cluster VMs on each host in the cluster and byreplicating storage between the hosts. It does not depend on VMware Distributed Research Scheduler(DRS) for availability, and in fact the ONTAP Select cluster VMs should not be migrated between hosts.The vSphere cluster is sized optimally for running the ONTAP Select workload and VMware and IBMmanagement services. Recovery of a failed host involves working closely with NetApp support toreconstitute the failed host, rather than migrating workload to a new host.Because of this, the four–node cluster operates at greater than 75% capacity. HA admission control must bedisabled on the cluster to allow for the deployment of the NetApp ONTAP Select cluster VMs.2.5 ScaleThis design does not allow for the scaling of the instance, either by adding hosts to the cluster or by addingadditional clusters. The NetApp ONTAP Select instance is intended only for the purpose of providingstorage services to other environments deployed in the IBM Cloud, including both VMware vCenter Serverand VMware Cloud Foundation instances.2.6 Backup of management componentsUnlike the vCenter Server solution architecture, this architecture does not stipulate the deployment of abackup service such as Veeam to the environment. Because the cluster is not intended for runningworkload, the cluster configuration is not expected to change frequently.2.7 ReplicationAfter your NetApp ONTAP Select instance is deployed, you can configure replication between it and otherONTAP clusters. For this purpose, you will create additional replication network interfaces on the ONTAPSelect cluster nodes to conduct replication traffic.You will need to carefully consider network connectivity and routing for your replication traffic. Note thatthe ONTAP replication protocol does not support NAT traversal. Additionally, since the ONTAPreplication does not provide native encryption, you should consider whether to provide external encryptionsuch as IPsec. These decisions and configuration are beyond the scope of this architecture. Refer toNetApp’s cluster peering guide in Appendix B for more details.2.8 Software updatesNetApp ONTAP Select updates can be obtained from the NetApp support site and applied using NetApp’sONTAP software upgrade procedure. Copyright IBM Corporation 2017Page 10 of 12

Appendix A—License RequirementsThis architecture requires you to obtain additional licensing for the storage virtualization componentdepending on the NetApp ONTAPSelectSoftware–definedstorageHigh capacityNetApp ONTAP Select StandardHigh performanceNetApp ONTAP Select PremiumTable 9 License requirements Copyright IBM Corporation 2017Page 11 of 12

Appendix B—ReferenceAdditional information about IBM Cloud and NetApp ONTAP Select can be found at the following sites: IBM Cloud Architecture Center for pp ONTAP Cluster Peering Express Guide: http://docs.netapp.com/ontap9/index.jsp?topic %2Fcom.netapp.doc.exp-clus-peer%2Fhome.html Copyright IBM Corporation 2017Page 12 of 12

High performance Dual Intel Xeon E5-2650 v4, 24 cores total . VMware NSX Manager NetApp ONTAP Select NFS datastore . IBM Cloud Driver NetApp ONTAP Select NFS datastore NetApp ONTAP Select Deploy VM NetApp ONTAP Select NFS datastore NetApp ONTAP S

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