Stretched cluster vs metrocluster. 1, shipping with vSphere 6.

Stretched cluster vs metrocluster vSAN 7. E. Document | 6 Stretched Clusters Stretched clusters are traditional vSphere Clusters that are configured with host systems located in multiple locations. To ensure full availability for your VMs, repair the cluster objects immediately. - The presentation compared the requirements, advantages, and disadvantages of VMware Site Recovery Manager (SRM) and VMware Stretched Clusters (vMSC) for disaster recovery. When using SAN client configurations, you must check whether any special considerations for MetroCluster configurations are included in the notes that are provided in the NetApp A vMSC configuration is a stretched cluster architecture where ESXi hosts can be in two different sites in metro distance (100 km / 60 miles) while accessing a synchronously replicated storage resource. You want to understand the requirements and best practices for configuring a stretch MetroCluster configuration. Replace a Failed Host in a Stretched Cluster In an active-active stretch cluster topology, only stretch the WebLogic Server cluster across the two sites. stretched cluster with local fault protection, even when one site is unavailable, the cluster can perform repairs on missing or broken components in the available site. g. In an environment with multiple availability zones, Layer 2 networks must be stretched between the availability zones by the physical infrastructure. 7 and later) In these configurations, MAUSO is initiated in the same circumstances as AUSO, as described above, and also after a complete site failure (controllers, storage, and switches). – Non-uniform Storage Presentation: Ideal for stretched cluster configurations. Conclusion. Topics that apply only to stretch MetroCluster refer to stretch MetroCluster. A vSAN stretched cluster was formed by configuring two nodes in one fault domain, two nodes in another fault domain, and designating the vSAN Witness Host, which resided on the management cluster in a different site. And when a split brain has occurred, site partition also sometimes called, they will declare 1 location winner for each of the presented stretched datastores. 0 Update 3, Virtual Volumes support Stretched Storage Clustering (SSC) through SCSI. This white paper describes a reference architecture used for validating the use of VPLEX and PowerMax enterprise external storage platforms with SRDF/Metro in a VMware Cloud Foundation on a Dell VxBlock multi-site stretched cluster In an environment with multiple availability zones, Layer 2 networks must be stretched between the availability zones by the physical infrastructure. 6 MetroCluster IP Solution Architecture Stretched Clusters for VMware Cloud on AWS is designed to protect against an AWS availability zone failure. Configure the IP address of the vSAN network for the second availability zone as an additional isolation addresses for the cluster. 0 Update 2 enables you to operate DRS in automatic mode, and recover gracefully from network partitions. Placing the voting files on a diskgroup with external redundancy resource guarantees eviction of one site if intersite connectivity is lost. “ storage site affinity ,” the preferred location for access to a given LUN. The method for stretching these Layer 2 networks and providing a highly available Layer 3 gateway is vendor-specific. E2E Deployment and Operations Guide with Stretched Cluster: Integrated System for Microsoft Azure Stack HCI. Learn about how ActiveCluster, Pure Storage’s synchronous replication and stretched cluster solution, can be used in VMware vSphere environments to deliver zero Recovery Time Objective. For the Number of master nodes, enter 2, thereby bringing the total number of master nodes across the Primary and Remote IBM Cloud Pak System to 3. Secondly, HP 3PAR Peer Persistence adds functionalities to HP 3PAR Remote Copy software and HP 3PAR OS, that two 3PAR storage systems form a nearly continuous storage system. Note that, in addition to a required quorum witness, a Dell EMC VPLEX/Metro stretch cluster is more complex: each of the two VPLEX clusters (one per site) requires one VPLEX Management Console and at least one (up to 4) VPLEX Engine(s). Red Hat OpenShift Data Foundation deployment can be stretched between two different geographical locations to provide the storage infrastructure with disaster recovery capabilities. 6 and later, all traffic is unicast. Stretched clusters are becoming more popular as geographical redundancy becomes a requirement for specific business models that must be up 24×7 even when one of its data centers is temporarily out of commission. This end-to-end deployment guide provides an overview of the Microsoft Azure Stack HCI operating system and VMware vSphere Metro Storage Cluster (vMSC) is a specific configuration within the VMware Hardware Compatibility List (HCL). 0 and later continue to serve I/O if any disks or disks on one site reach 96 percent full or 5 GB free capacity (whichever is less) while disks on the other site have free space available. This architecture is called the 2. This aspect of an Extended Distance Cluster derives from the storage configuration and setup and is therefore independent of the physical distance between the nodes in the cluster. I agree with Chad that there are too many people What is Metro Availability? Nutanix provides native “stretch clustering” capabilities which allow for a compute and storage cluster to span multiple physical sites. When setting MetroCluster FC is also available in a smaller configuration called Stretched MetroCluster. vSAN stretched cluster is created and you can see the status of “vSAN is Turned on” We can also take a look at the Active-active clusters: Client machines connect to a load balancer that distributes their workloads across multiple active servers. You need vSphere Ente A VMware Metro Cluster (vMSC) is also sometimes called a stretched cluster which gives more of a clue to it’s function, since it allows a VMware vSphere® Metro Storage Cluster (vMSC) is a specific configuration within the VMware Hardware Compatibility List (HCL). This option is available only when all the prerequisites for arbiter are fulfilled and the selected nodes are populated. If an application instance fails the second instance in another availability zone can take over. For most stretched cluster solutions these days vendors use a "witness" in a 3rd location. Management network requires connectivity across all three sites, using a Layer 2 stretched network or a Layer 3 network. Use four heartbeat datastores (2 at each site). 14. Wait for it to complete and run "metrocluster check show" to view the results. A stretch cluster requires at least three DCs to function correctly. Design Requirement. Solution integration and network architecture. 1, VMware is expanding the capabilities of Virtual SAN as a platform and is introducing higher levels of enterprise availability and data protection of the If this will work will depend on how DATACORE has implemented their solution. For more information, see Arbiter stretch cluster requirements in Requirements for enabling stretch cluster. Environment. A vMSC provides fully active and workload balanced data centers with resources in a stretched vSphere cluster. Practically, there is, however, another characteristic of Extended Distance Clusters or Stretched Clusters, at least when implemented for an Oracle RAC Database. If your cluster has worker nodes deployed in your third availability zone skip to chapter Three Worker node cluster. Both sides of the cluster act as primary for certain user VMs. This white paper describes a reference architecture used for validating the use of VPLEX and PowerMax enterprise external storage platforms with SRDF/Metro in a VMware Cloud Foundation on a Dell VxBlock multi-site stretched cluster configuration. In v6. You can perform all of the steps below on the cluster nodes directly or from a remote management computer that contains the Windows Server Remote Server Administration Tools. It must be done manually using a standard VxRail SolVe procedure with some additional guidance. MetroCluster configurations are not supported for front-end NVMe networks before ONTAP 9. It's not an ideal product from an operational perspective, and most features of SRM will never be used as we have L2 connectivity between the sites. VCF-CLS-REQD-CFG-006. . The PowerStore Metro Volume feature provides concurrent and full active/active host IO on both participating PowerStore cluster configurations. Justification. When you create a LIF on a cluster in a MetroCluster configuration, the LIF is replicated on the partner cluster. 9 vCenter Heartbeat setup Use stretched clusters to implement automated disaster recovery for virtualized workloads and file shares hosted on Azure Local. The vSAN network requires connectivity across all three sites. The requirements for the ONTAP Select MetroCluster SDS highlight An IBM SAN Volume Controller cluster is commonly installed to provide service in a single data center. Applications can span multiple AWS availability zones within a VMware Cloud on AWS cluster. 5 First, a VMware vSphere Metro Storage Cluster (or VMware vMSC) is a configuration of a VMware vSphere cluster, that is based on a a stretched storage cluster. 1 storage management software. Now you will manage and operate your stretch cluster. In vSAN 6. Standard MetroCluster Configuration MetroCluster configurations protect data by using two physically separated mirrored clusters, separated by a distance of up to 200km. An IBM SAN Volume Controller cluster can also be installed in a “stretched” configuration, where a single SAN Practically, there is, however, another characteristic of Extended Distance Clusters or Stretched Clusters, at least when implemented for an Oracle RAC Database. Stretched storage support is available for array-based replication. Expand a Stretched Cluster in VMware Cloud Foundation You can expand a stretched cluster by adding hosts. It is recommended that you add the same number of hosts to both availability zones for symmetry and cluster balance. 0 VMware vSphere ESXi 7. cluster_A::> metrocluster check run The operation has been started and is running in the background. 3. In the validation of this design, a vSAN storage environment was deployed as a vSAN stretched cluster to provide high availability and business continuity for the virtual desktops in a metro cluster deployment. 4,950 Views Mark as New; Bookmark; Subscribe; Mute; Subscribe to RSS Feed; - MetroCluster = a cluster stretched over a metropolitan distance - MetroMirror = mirroring (synchronous) over a metropolitan distance. Cluster on SITE A sends acknowledge back to VM only when all 4 Stretched clusters using two physical sites provide disaster recovery and business continuity should a site suffer an outage. The solution is currently av Hello, Is it possible to provide for a group of VMs a Metro-Availability (stretched cluster) solution using ESXi (since this feature for AHV isn’t available yet) to obtain 24x7 availability and downtime+disaster avoidance capabilities for certain services) and also provide for the VMs in the stretched cluster or a subset of those VMs async replication to a 3rd site (DR Contents v 5. 1 introduced VMware VSAN Stretched Cluster configuration. Prerequisites. It can be 50 miles (80 km) in case of point to point fibre optic connection, or even more when using an additional switch between nodes - provided that network latency will not exceed 5 ms. Zookeeper uses majority voting Stretched clusters let administrators implement an HCI that spans two physical locations. This is the case when all MachineSets show 1 of 1 machines . It describe guidelines, settings, and implementation steps necessary to achieve a satisfactory implementation. As a result, no additional configuration is necessary on the MetroCluster extends the availability of ONTAP by mirroring data between two independent ONTAP clusters. This geographical difference increases the disaster protection. Scale out and scale-in of stretched clusters can only happen in pairs. You want to use the command-line Stretched Clusters and VMware Site Recovery Manager ©️ VMware LLC. MetroCluster provides the capability to mirror both data and configuration between the two ONTAP clusters. Furthermore, all Clusters of the SDDC will be uniformly implemented as stretched or non-stretched. Active-passive clusters: Client machines connect to the main server, which handles the full workload, while a Blog Choosing the Right Disaster Recovery Solution for Your Enterprise Applications. VMware’s industry-leading vSphere hypervisor can be deployed as a stretched cluster referred to as a vSphere Metro Storage Cluster (vMSC). A vMSC can provide a vSphere stretched cluster architecture. The VCF automation cannot be used for the stretched cluster configuration. Provide the In a fabric-attached MetroCluster configuration, the nodes are in different locations. Each cluster synchronously mirrors the data and storage virtual machine (SVM) configuration of the other. Virtual SAN Stretched Cluster is a specific configuration implemented in environments where Objective 6. If you're deploying a "normal" Stretched Cluster, you'll have to use static routes to connect the "backend" vSAN VMkernel interfaces to the vSAN Witness Host's vSAN VMkernel Stretched clusters extend the Virtual SAN cluster from a single site to two sites for a higher level of availability and intersite load balancing. SSC is a specific storage configuration that is commonly NetApp MetroCluster is a highly cost-effective, synchronous replication solution for combining high availability and disaster recovery in a campus or metropolitan area to protect against both site A stretched cluster, sometimes called a metro-cluster, is a deployment model in which two or more host servers are part of the same logical cluster but are in separate sites, buildings or geographical locations some Emanoel_Krieger, daphnissov is correct that vSAN can/does support L3, but static routes are required, because vSAN uses the same TCP stack as the Management VMkernel interface. TeChNiCAl WhiTe PAPeR | PROTECTING VSPHERE METRO STORAGE CLUSTER AND VSAN STRETCHED CLUSTER WITH RUBRIK 7 RUBRiK CONFiGURATiON - VCeNTeR COMPUTe ViSiBiliTY In Rubrik Security Cloud, the configuration for vCenter visibility can be accessed in the Data Sources -> vCenter Servers section of the settings room. When the write comes from VM to Nutanix AOS, Nutanix AOS writes two copies of the data in Nutanix cluster on SITE A, right after sends the same data to Nutanix cluster on SITE B. 0 Kudos This architecture fits neatly in between hardware-based MetroCluster and single data-center clusters (hardware-defined or software-defined). Layer 2 Everywhere. Some of the All SAN Arrays (ASAs) are supported in MetroCluster configurations. A metro cluster is a host cluster that spans multiple sites located in different locations (usually two). x VMware vSphere ESXi 6. 1. 3 Overview and Best Practices. Nutanix AOS on SITE B creates two copies of the data and sends back acknowledge to Nutanix cluster on SITE A. HBA ports 1a through 1d are used for connections with native disks. 0 or later supports Metro Volume for Windows Server and Linux hosts. vSAN stretched clusters extend the vSAN cluster from a single data site to two sites for a better level of availability and intersite load balancing. 3, see TR-4375 MetroCluster for Data ONTAP Version 8. Apache Kafka uses Zookeeper for storing cluster metadata, such as Access Control Lists and topics configuration. 5 DC setup. In these deployments, the compute cluster spans two locations and has access to a shared pool of storage. There are two types of MetroCluster, a stretched MetroCluster which can have two nodes within 500 metres of each other and a Fabric-attached Stretched cluster and CAU should work seamlessly together to provide full stack cluster update without service interruption and local only workload mobility for the Live Migrated VMs The total process of applying the IBM Spectrum Virtualize and SAN Volume Controller Enhanced Stretched Cluster with VMware IBM® IBM Spectrum™ IBM Spectrum Virtualize™ Redbooks® Traditional 3-tier MetroCluster solutions are complex to design, deploy, and maintain—often defeating the primary goal of continuous synchronous replication for VMs at scale from a single pane of glass without In this article. To ensure full availability for your VMs When you disable a stretched cluster, the witness host is removed, but the fault domain configuration remains. 12. We have the witness site worked out. This provides high availability and protection against a single site We're adding another definition or tip to our list today – What is VMware Stretched Cluster? We wrote a post in the past teaching How To Configure VMware High Availability (HA) Cluster. MetroCluster; SnapMirror; Ebin Kadavi October 03, 2019 1,377 views. Trending Posts. Install a sample application for failure testing Install an OCP application that can be configured to be highly available with critical components deployed in both data zones. 5 and ESX 7. Based on the use case, it is possible to span the Kafka cluster over two DCs, and only use the third cluster as a tie-breaker ZooKeeper node. In the following examples representing two-node stretch MetroCluster configurations with disks and array LUNs, HBA ports 0a through 0d are used for connection with array LUNs. Stretched or nonswitched MetroCluster (NetApp storage) Fabric or switched MetroCluster (NetApp storage) For MetroCluster in clustered Data ONTAP 8. for 2008: For the MetroCluster itself you would normally trigger full site fail-over manually - there were some scripted automated solutions (using 3rd site with a witness), but I think support for it was always an a case by case basis. A Kafka stretch cluster can be operated in a 3 or 2. Meanwhile we have made several improvements and have extended the stretched cluster feature set and it is now fully functioning & enterprise Fibre Channel: You must use stretched VSAN or stretched fabrics. During the stretched-cluster configuration, the management VMs are configured to run on the first AZ by default. NOTE: If the two clusters are both in the same Layer 2 network we can enable Stretched Network which will also allow for Live Migration between clusters so we can keep workloads online in the event we need to do some planned maintenance. The location might be in different floors of a datacenter, different buildings or facilities in a metropolitan area. Stretched Clusters the vSAN way. Though in a vSphere Stretched Cluster, you want to make sure you setup two heartbeat datastores per site so each site hosts can still reach their two heartbeat datastores in case of Use four heartbeat datastores (2 at each site). Particular to the uniform access configuration, host data path connections at each site are cross-connected to the peer data center site storage array. 5 DC configuration. Click Done. a multi-cluster architecture, let’s discuss some common concerns and drawbacks. These configurations are commonly referred to as stretched storage clusters or metro storage clusters and are implemented in environments where disaster and downtime avoidance is a key requirement. 126 5. Each director is protected by redundant power supplies, fans, and interconnects, making the VPLEX highly resilient. Because the witness host is not available, all witness components are missing for your virtual machines. It is a separate dedicated network for ONTAP cluster interconnect, MetroCluster SyncMirror, and MetroCluster NVRAM mirror communications. In this article, learn how to implement a vSAN stretched cluster for an Azure VMware Solution private cloud. These configurations are commonly referred to as MetroCluster is a free feature of ONTAP software that synchronously mirrors data and configuration between two ONTAP clusters in separate locations or failure domains. 8 VMware vStorage API for Array Integration (VAAI) . vSAN is integrated tightly with vSphere HA. It must have independent routing and connectivity between the data sites and the witness host. But Stretched Cluster is something different as stretched cluster adds an another dimension to the traditional HA cluster – a geographical location. Once it has been deployed, it is not possible to convert a standard SDDC to a stretched cluster SDDC (or vice-versa). You can configure a vSAN stretched Introduction 6 VMware Cloud Foundation Stretched Cluster on Dell VxBlock 1000 Multi-Site VMware Cloud Foundation on Dell Technologies VxBlock Multi-Site Stretched Deployments with Metro Node and PowerMax SRDF/Metro provisioning, and cloud management to facilitate end-to-end support for application Within the stretched cluster model, minimum three clusters are required. The This IBM® Redbooks® publication describes the IBM storage area network (SAN) and IBM SpectrumTM Virtualize, and SAN Volume Controller Enhanced Stretched Cluster configuration when combined with VMware. It is safe to say, when we first introduced the stretched cluster capability, it wasn’t 100% ready. In today’s constantly connected global business environment, protecting your data from disasters (natural disasters, multiple disk failures, and man-made mishaps) and recovering applications instantly Table of Contents vSAN stretched clusters What problem needed to be solved? What is VSAN Stretched cluster failure resiliency? Wrap up The VMware ecosystem is populated by a plethora of products that address all areas of the Stretched Cluster on IBM SVC (Part 1) (CloudFix) Stretched Cluster on IBM SVC (Part 2) (CloudFix) Deploying Stretched vSphere clusters with Site Recovery Manager on SAN Volume Controller (Virtual Storage Speak) VMware support with NetApp MetroCluster (1001783) (VMware KB) General. A VPLEX cluster can scale from two directors to eight directors. Regards, Radek. These configurations are usually implemented in environments where disaster and downtime VMware Metro Storage Cluster (vMSC) is a specific storage configuration that is commonly referred to as Stretched Storage Cluster (SSC) or Metro Storage Cluster (MSC). Nakivo Backup & Replication 11 Announcement; NAKIVO’s Agent-Based Backup for Proxmox VE; To prevent storage and networktraffic overhead in a stretched-cluster environment, VMware recommends implementing VMware DRS affinityrules to enable a logical separation of virtual machines. The stretched cluster infrastructure can be in same data center, or even across site borders in two different sites in metro Introduction to Stretched Clusters Stretched clusters extend the vSAN cluster from a single data site to two sites for a faster level of availability and intersite load balancing. Configure DRS settings for the stretched cluster. Each cluster synchronously mirrors the data and storage virtual machine vMSC with VSP array A VMware vSphere Metro Storage Cluster architecture on Hitachi Virtual Storage Platform storage array platform uses Global-Active Device (GAD) feature (active-active stretched clustering technology) to provide an ideal solution for maximizing availability and uptime by clustering physical data centers within metro distances. 1 – Describe a Stretched Cluster Architecture vSAN stretched clusters provide resiliency against the loss of an entire site. I was reading this article by Chad Sakac on vSphere DR / HA, or in other words SRM versus Stretched (vMSC) solutions. Annotation Relevant Products StarWind Virtual SAN (VSAN) Purpose The guide provides a comprehensive step-by-step process of configuring a stretched cluster with StarWind Virtual SAN Windows-based application, ensuring a highly available, fault-tolerant, and efficient virtualized storage solution that integrates seamlessly with Microsoft Windows Server Select Enable arbiter checkbox if you want to use the stretch clusters. A Hyperflex stretched cluster is a single cluster with geographically distributed nodes. You also must provide a Layer 3 gateway that is highly available between availability zones. Unstretch a Cluster This procedure describes how to unstretch a vSAN cluster. An IT team can use a stretched cluster as part of its disaster recovery strategy or to manage planned downtime to ensure the With the release of vSphere 6 update 1, and Virtual SAN 6. After attending Duncan Epping & Lee Dilworth’s presentation at VMworld 2013 on vSphere Metro Storage Clusters (Session BCO4872, see above video), it got me thinking about writing this article. Friday, January 24 2025. When a disaster occurs at one site, an administrator can activate the mirrored SVM and begin serving the mirrored data from the surviving site. What is vMSC? vSphere Metro Storage Cluster (vMSC) is new configuration. 1hw$ss 0hwur&oxvwhu 6roxwlrq $ufklwhfwxuh dqg 'hvljq 1hw$ss ,qf $oo uljkwv uhvhuyhg 1rwh ,q fdvhv ri d sduwldo idloxuh wkdw vhyhuv doo frqqhfwlylw\ ehwzhhq vlwhv wkh There have been (for some time now) a set of stretched cluster solutions at the storage level (NetApp Metrocluster, EMC VPLEX, HP P-series aka Lefthand, etc) – several of which (mostly those three) have customers using them in the stretched vSphere cluster use case. – Uniform Storage Presentation: Optimal MPIO paths for minimal latency. Stretched clusters are typically deployed in environments where the distance between You want to understand the architecture of a stretch MetroCluster configuration. vSAN Stretched Cluster was first introduced with vSAN 6. - vMSC requires stretched Layer 2 connectivity and active/active storage but offers near-zero recovery point objectives (RPO) and quick recovery time objectives (RTO). If you place DRS in partially automated mode, you can control which VMs to migrate to each site. DNS and NTP are configured, and I created Storage Containers with the following names (all this is done on BOTH clusters, except the vCLS containers): METRO_1-2 This is for guest vm's running on Cluster-1 which are synced to Cluster-2; In true Pure fashion – ActiveCluster democratizes metro stretch clustering at the speed of flash for all! And to all of those out there who continue to pay $100,000s of Dollars / Euros / Pounds / Yen for stretch clustering instances – it’s time to have a conversation with your vendor about a The stretched cluster active/passive service uses Omnissa Horizon 8 hosted on a vSphere environment with a vSAN stretched cluster and storage between the two sites. Different use cases like vSphere Metro Storage Cluster and vCenter Site Recovery Manager will be discussed. VMware vSphere® Metro Storage Cluster (vMSC) is a specific storage configuration that is commonly referred to as stretched storage clusters or metro storage clusters. 2. The maximum supported network latency between sites for the vSphere ESXi™ management networks is 10 ms round-trip time (RTT). You can use vSAN stretched clusters to manage Manage stretched cluster replication. vSAN is integrated tightly with vSphere Availability (HA). Install ODF operators and storage cluster Install the OpenShift Container Storage operator and storage cluster using OperatorHub in the OpenShift Web console. See the figure below for the fault domain configuration for the vSAN stretched cluster. What they are, how they are different, and how they can be used Stretched clustering is a great way to improve availability for hyper-converged clusters. Business continuity and continuous Oracle Extended RAC with MetroCluster. IBM Storwize V7000 - MetroMirror vs. 3. How to automate vSphere Metro Storage Clusters, Once a private cloud is created with a stretched cluster, it can't be changed to a standard cluster private cloud. With that single stretched VMware cluster, you can use VMware HA to provide speed and automation to VM recovery. Latency Virtual SAN Stretched Cluster Guide STORAGE and AVAILABILITY Documentation / 5 Introduction VMware Virtual SAN 6. Site Recovery Manager supports active-active stretched storage between protected and recovery sites by using Cross vCenter Server vMotion to perform planned migrations, eliminating service downtime. Select the arbiter zone from the dropdown list vSAN supports stretched cluster deployments that span two locations. To check the status of the running metrocluster check operation, use the command 1hw$ss 0hwur&oxvwhu 6roxwlrq $ufklwhfwxuh dqg 'hvljq 1hw$ss ,qf $oo uljkwv uhvhuyhg 1rwh ,q fdvhv ri d sduwldo idloxuh wkdw vhyhuv doo frqqhfwlylw\ ehwzhhq vlwhv wkh This is called a “wide cluster” or “stretched cluster”, and it’s an alternative to the “multi-cluster” model that has been coming into popularity. In all versions of vSAN, the witness traffic between a data site and the witness host is unicast. For the host configuration, PowerStore supports non-uniform host access which uses only local paths, and Uniform host access which provides extra cross-connectivity to the remote PowerStore cluster. We couldn't even kill the process on the host to get them out of the state and would have to result to hard resetting the host. • None –keep data on Non-preferred (stretched cluster) Keep data on secondary site only, no Yeah, I won't bring anything new to the table, yet (funnily enough) both technology names are 100% spot on in this case : - MetroCluster = a cluster stretched over a metropolitan distance - MetroMirror = mirroring (synchronous) over a metropolitan distance Regards, Radek A vSAN stretched cluster must meet certain basic networking requirements. When a Coherence cluster is stretched across sites, it is susceptible to split brain. 5 and earlier, vSAN traffic between data sites is multicast for metadata and unicast for I/O. MetroCluster petter_glenstru p ‎2010-10-15 06:59 AM. Placing the voting files on a diskgroup with normal redundancy with only one ASM disk per site guarantees node eviction on both sites if intersite connectivity is lost because neither site vSphere Cluster Design Requirements for vSAN Stretched Clusters with VMware Cloud Foundation; Requirement ID. In these cases, the two-node MetroCluster cluster no longer functions as an HA system because the alternate controller cannot serve data to the servers on the opposite site. In the MetroCluster documentation, the information for AFF models applies to the corresponding ASA system. SSC is a specific storage configuration that is commonly referred to as Metro Storage Clustering. 1 is the availability of stretched cluster deployment. Stretched clusters are typically deployed in environments where the distance between data centers is limited, such as metropolitan or campus environments. A stretched cluster is a deployment model in which two or more host servers are part of the same logical cluster but in separate geographical locations, Cisco/Netapp MetroCluster, Cisco Hyperflex, and others. You can decommission a stretched cluster and convert it to a standard vSAN cluster. The Feature Pack also supports configu- One of the most interesting features of VSAN, is the stretched cluster capability. vSAN Stretched cluster allows you to configure vSAN Cluster between 2 datacenters where the. Because Metro Availability presents a stretched datastore between two Nutanix clusters, you can form a single VMware cluster. Click the 3 dot icon on the right hand-side of the window for The trickiest thing about making a stretched cluster work with Hyper-V is getting the underlying storage to work properly. For example, all cabling and other information for the AFF A400 system also applies to the ASA AFF A400 system. Graphical Tools Method VMware’s industry-leading vSphere hypervisor can be deployed as a stretched cluster referred to as a vSphere Metro Storage Cluster (vMSC). If a site goes offline unexpectedly, vSphere SRM and Stretched Clusters. Incase any of the sites A or B fail, the failed site can be recovered at SITE C through SRM. Each cluster is in a site or failure domain and leverages the standard HA features on the Hybrid or AFA systems. This document describes high-level architecture and design concepts for NetApp® MetroCluster features in NetApp ONTAP® 9. By default vSphere HA utilize two heartbeat datastores, which is more than enough when all the HA Cluster hosts sit on a single site. 1, shipping with vSphere 6. We have a 2-node VxRail vSAN cluster with the VCSA instance and the virtual vSAN witness instance running on a third ESXi host which is not part of the vSAN cluster and also is not part of the datacenter. This technical document provides best practices and configuration guidance for implementing VMware Virtual Volumes (vVols) in a Metro/Stretched Storage Cluster environment using vSphere 8. Other SAN protocols such as iSCSI, FC, and FCoE are supported on MetroCluster configurations. Coherence should have a Coherence cluster on each site using federated caching to replicate data across the two active sites. SRM and stretched clusters, either VMware Virtual SAN Stretched Clusters or vSphere Metro Storage Clusters (vMSC), work well together to provide local as well as remote disaster Ex Site A and B being a stretched cluster , and Site C being the DR site for both sites A & C. When you disable a stretched cluster, the witness host is removed, but the fault domain configuration remains. Sure, it worked, but it needed some improvements. We will here consider two standard configurations: a configuration with two data centers (or, in clouds, two availability zones), and a configuration with three data centers (or, in clouds, three availability Figure 4) vSphere stretched cluster using NetApp MetroCluster architechture Note: This illustration is a simplified representation and does not indicate the redundant front-end components, such as Ethernet and fibre channel switches. M ulti-AZ Component placement. What is a Metro Storage Cluster? First and foremost, vMSC stands for vSphere Metro Storage Cluster, that is, a vSphere HA/DRS cluster stretched over distance. IP/iSCSI: You must use layer 2 stretched network. We currently have two clusters, and vSphere Replication running, and are looking at SRM. Figure 1) High-level topology diagram of vSphere Stretched Cluster on NetApp MetroCluster. For more information about MetroCluster FC with is used solely by ONTAP. I have presented on vSphere Metro Storage Cluster solutions at VMworld together with Lee Dilworth and also wrote a white paper on this topic a while back and various blog posts since. 2 (the newest version), VMware added deduplication and compression as well as erasure coding; these processes add the ability to construct RAID 5/6 clusters. vMSC solutions are supported with both NetApp® MetroCluster and SnapMirror active sync (formerly known as SnapMirror Business Continuity, or SMBC) and provide advanced business continuity if one or more failure domains suffer a total The choice of a stretched cluster vs a standard SDDC is a decision which must be made at the time of SDDC deployment. When faced with a disaster, such as one of the two locations is partially or totally not available, OpenShift Data Foundation deployed on the OpenShift Container Platform deployment must A MetroCluster is essentially a stretched mirrored HA pair of storage nodes in a cluster configuration. Many thanks, I have a basic question about vSAN which I cannot get my head around, no mater what information I read about. This is mainly about a Microsoft stretched cluster & depends on the OS version. If so can some one please give me a break down on the configuration. A stretched cluster architecture facilitates for higher levels of availability and things like inter-site load balancing. The virtual vSAN witness instance itself is part of the If you have a “stretched-cluster” deployment in which much of your cluster is behind a single network component, you might need to use stretch mode to ensure data integrity. d) New Witness Component for Additional each other as a (stretched) metro storage cluster. To transition from a stretch to a fabric-attached MetroCluster configuration, you must add FC switches and, if necessary, FC-to-SAS bridges to the configuration. 0 Update 1, introduced a new feature called VMware Virtual SAN Stretched Cluster. DRS must be enabled on the cluster. Implication. The data for these VMs is replicated synchronously on the other site. An HA cluster is created with vSphere cluster nodes and SC Series arrays deployed at each site. • None –keep data on Preferred (stretched cluster) Keep data on primary site only, no cross-site protection. Zero Starting with vSphere 8. 20. In the Red Hat OpenShift Container Platform cluster installation type, select Red Hat OpenShift Container Platform stretched cluster primary. Storage connectivity using Fibre Channel, iSCSI, NFS, and FCoE is supported. PowerStoreOS 4. MetroCluster IP configurations using the ONTAP Mediator service (ONTAP 9. Before discussing why you might want to implement a wide cluster vs. It's a common multisite solution and also part of VMware's Validated Design for SDDCs with multiple MetroCluster configurations protect data by using two physically separated, mirrored clusters. One of the goals of Metro Availability is to simplify VM recovery management. Let’s take a closer look at the Stretched I have two Nutanix clusters (Cluster-1 and Cluster-2) fresh foundationed with AOS 5. Many enterprises have multisite data center operations with stretched, high-speed, low-latency networks that function essentially as a single infrastructure. If a site goes offline unexpectedly, vSphere HA will Review the setting for the vSAN Stretched cluster and click on finish to create the vSAN stretched cluster. Follow the Request Host Quota process to get the quota reserved for the required number of nodes. vSAN stretched clusters are typically deployed in environments where the distance between data centers is limited, such as metropolitan or campus environments. 0 U2. vSAN Stretched Clusters provide resilience against the loss of an entire site. Dell EMC Solutions for Azure Stack HCI stretched clusters offer distinct network topologies that are validated with the following stretched cluster configurations: A test qualified VMware Metro Storage Cluster using HPE Primera or Alletra 9000 Storage is supported in accordance with the VMware description of a uniform access vMSC configuration. Disaster recovery and test recovery continue to use the existing LUN-based recovery Hot off the press! One of the most notable feature announcements of VMware Virtual SAN 6. This stretched cluster can be implemented with two nodes within a maximum of 160kms of each other. To enhance the built-in resiliency of Azure Local, implement a stretched Azure Local instance that consists of two groups of nodes, with one group per site. Last time I attempted cluster to cluster hyper-v replication with 2016 it created issues where virtual machines would get stuck in a stopping state if they rebooted, crashed or tried to live migrate to another host. VMware vSphere ESXi 6. It’s good we test this in early preview stages of the Azure Stack HCI OS, so the product gets the improvements it needs before Azure Stack HCI OS gets to GA. . Similarly, a standard cluster private cloud can't be changed to a stretched cluster private cloud after creation. There have been (for some time now) a set of stretched cluster solutions at the storage level (NetApp Metrocluster, EMC VPLEX, HP P-series aka Lefthand, IBM SVC etc) – several of which (mostly EMC, NetApp and HP Red Hat OpenShift Container Storage deployment can be stretched between two different geographical locations to provide the storage infrastructure with disaster recovery capabilities. Also, by making the R1 and R2 devices seem identical to the Windows failover cluster, the cluster software is not aware that the storage is extended or stretched. ActiveCluster entirely precludes these extraneous site, hardware, and software requirements. Although the preview build performance results are not satisfying enough. Though in a vSphere Stretched Cluster, you want to make sure you setup two heartbeat datastores per site so each site hosts can still reach their two heartbeat datastores in case of If I have 4 nodes (cluster) in 1 Server Room and I would like to move 2 of these nodes to the other Server room but still like to keep it as one cluster. Can I keep my Standard ESXi license or do I need to upgrade to a Enterprise license to get a stretched cluster? VMware vSphere® Metro Storage Cluster (vMSC) is a specific configuration within the VMware Hardware Compatibility List (HCL). The vSAN storage policies that impact stretched cluster are: • Dual site mirroring (stretched cluster) –enables protection across sites. Fibre Channel: You must use stretched VSAN or stretched fabrics. vMSC solutions are supported with both NetApp® MetroCluster and SnapMirror active sync There are some basic design requirements for a Stretched Cluster solution: 1. When faced with a disaster such as one of the two locations is partially or totally not available, OpenShift Container Storage deployed on the OpenShift Container Platform deployment must Starting with vSphere 8. LIFs are not placed on a one-to-one name basis. The VPLEX cluster at each site itself is designed to be highly available. It explores how to properly configure vSphere High Availability (HA), Distributed Resource Scheduler (DRS), and storage components across two data centers to ensure VSAN v6. A VMware-certified vSphere Metro Storage Cluster solution couples vSphere compute and Dell EMC storage virtualization to meet high-availability goals with infrastructure stretched across a given distance. Stretched clusters enable you to access the entire cluster even if one of the sites were to completely go down. Non-uniform presentation, ideal for stretched cluster configurations, involves each storage host accessing a Metro Volume through one cluster. This allows the Virtual SAN customer to configure two geographically located sites, while synchronously replicating data between the two sites. ydplz yiy zcff bvuyca egzgay vyndhjc oekbufv cbvlkfy kllhv tbdspn