April 2, 2023 |
Webinar: Availability Options for SQL Server in AWSWebinar: Availability Options for SQL Server in AWSRegister for the On-Demand WebinarYou can successfully deploy and run SQL Server workloads in AWS without stress by having a well-planned data strategy. In this webinar, presented by Microsoft MVP Dave Bermingham, you will learn about availability options on AWS, effective ways to optimize cloud storage and cost, using the cloud for disaster recovery, and key considerations for choosing the right availability options and requirements for your SQL Server – all to help you define and plan your best data strategy. Register SIOS
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March 29, 2023 |
The Industry’s Most Comprehensive Disaster Recovery for SAP HANA DatabasesThe Industry’s Most Comprehensive Disaster Recovery for SAP HANA DatabasesIf you’ve got SAP HANA databases, you know how essential it is to protect them from any downtime or disasters. Unfortunately, providing high availability clustering and disaster recovery protection for HANA databases can be a real headache. Configuring HA/DR with many clustering solutions is often a time-consuming and intricate process that involves lots of complicated scripting – while simultaneously addressing the source of the failure. And when things get that complex, it’s easy for errors to creep in, leading to unreliable failover and extended downtime. But don’t worry – in this blog, we’ll take a look at how the multi-target feature in the new V9.7.0 of SIOS LifeKeeper for Linux can make your life a lot easier by automating the failover and orchestrating the DR replication ensuring your HANA databases are always protected from local, site-wide and regional disasters. Read what analysts have to say about V9.7.0 of SIOS LifeKeeper for Linux. Automated HA/DR for up to four cluster nodesThe new HANA Multitarget feature enables you to deploy a high availability environment where HANA operates on a primary node and can failover to up to three secondary nodes located in different cloud Availability Zones or on-premises disaster recovery locations. SIOS LifeKeeper is an advanced clustering software that monitors the health of the entire IT stack – including network, storage, operating system, application, and hardware – and communicates with all associated cluster nodes. It also supports synchronous or asynchronous block-level replication of primary node storage to two or three secondary DR nodes using HANA System Replication (HSR). If it detects an issue with application or database availability, it automatically moves operation to a secondary node in the cluster and ensures that node now replicates to the DR node(s) – maintaining DR protection and eliminating the need for error-prone scripting. In normal operating conditions, the application (1) is running on primary node A located in Datacenter 1, Region 1. HSR is used to replicate storage from Node A to secondary nodes B and C (2). If SIOS LifeKeeper detects an application availability issue on Node A, it automatically orchestrates an application failover to Node B (3) and switches DR replication from Node B to Node C (4). When normal operation is restored to Node A, LifeKeeper automatically restores original replication settings with a single click. SIOS LifeKeeper for LinuxSIOS LifeKeeper for Linux version 9.7.0 delivers the most comprehensive high availability protection from local, site-wide, and regional disasters. It ensures that your essential HANA database resumes operations quickly and reliably, so you can be confident that your mission-critical workload is protected. In addition, to HANA Multitarget feature, SIOS LifeKeeper for Linux version 9.7 offers other new features and capabilities such as added support for WebSphere MQ v9.3, RHEL v9.0, SAP HANA on RHEL 8.6 and SLES 15 SP4, and SAP HANA on S/4HANA 2022. How SIOS Can HelpIf you are interested in purchasing SIOS LifeKeeper for Linux version 9.7, contact SIOS for more information or call toll-free (US) 866.318.0108 or international: +1.617.245.6955. Protect your business operations with SIOS LifeKeeper for Linux version 9.7 and gain the peace of mind of knowing that your HANA database is always available. Reproduced with permission from SIOS |
March 24, 2023 |
Webinar: Maximizing Uptime: High Availability Strategies for SQL Server and Multi-Platform EnvironmentsWebinar: Maximizing Uptime: High Availability Strategies for SQL Server and Multi-Platform EnvironmentsRegister for the On-Demand WebinarHigh availability is a critical requirement for any modern database system, and Microsoft SQL Server is no exception. Ensuring that your SQL Server databases remain available and operational in the face of hardware, software, and network failures requires careful planning and deployment of appropriate high-availability solutions. In this webinar, Dave Bermingham, SIOS Director of Customer Success, will explore the various high availability options available for SQL Server, including AlwaysOn Availability Groups, failover clustering, and database mirroring – as well as the advantages and limitations of each approach, and how to choose the right one for your particular needs. Dave will also discuss strategies for managing cross-platform compatibility, data consistency, and failover across different systems. Reproduced with permission from SIOS
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March 15, 2023 |
3-node Clusters Frequently Asked Questions and Answers3-node Clusters Frequently Asked Questions and AnswersIn today’s fast-paced business world, high availability and disaster recovery are essential for ensuring the continuity of operations and avoiding downtime. To achieve this, organizations are increasingly turning to 3-node clusters, which provide a way to increase reliability and protection from local, site-wide and even regional disasters. In this article, we will take a closer look at what a 3-node cluster is, why you might need one, and the different cluster management software solutions available for setting up a 3-node cluster in the cloud. What is a 3-node cluster?A 3-node cluster is a group of three interconnected computers that work together to provide increased reliability, availability, and scalability compared to a single node. At least one node in the group is geographically separated from the rest to enable operations to continue in the event of a disaster. Each node in a 3-node cluster can perform the same functions, and if one node fails, the others can take over to provide uninterrupted service. Why would I need a 3-node cluster?3-node clusters are typically used in situations where high availability and disaster recovery are required. For example, a 3-node cluster is often used to protect mission-critical applications, such as ERP systems and databases that must be available 24/7. They may be used in on-premises data centers, in the public cloud, or in a combination of both. How does a 3-node cluster work?In a typical 3-node cluster, the critical application is run on the primary server node (A) and replicates data to secondary target node (B) located nearby and tertiary target node (C ) located in a geographically separated location. The clustering software monitors the application environment on A and, if it detects a failure, fails over operation to node B. Node B assumes the role of primary node and now must replicate to node C to maintain disaster protection. When operation is restored to node A, the nodes need to be switched back from B to A where A resumes replicating to C. What software do I need to set up a 3-node cluster?There are various cluster management software solutions available that can be used to set up a 3-node cluster. Some popular solutions provide the necessary tools and protocols to detect failures, and perform failovers. Limitations and Challenges of Cluster Management Software Solutions:While some clustering solutions are available for setting up a 3-node cluster, many have their limitations and challenges to be aware of. Many Linux-based solutions are challenging to set up and configure for those without extensive Linux experience and may not be the best solution for more complex and large scale deployments. Additionally, they may not provide some advanced features, such as automatic failover, which are available in other cluster management solutions. In several popular clustering LInux-based solutions, the failover from A to B, the replication change from new primary B to C and the switchback to original operations is highly manual and prone to errors, making protection of critical applications potentially unreliable. These solutions require specialized skills and knowledge to diagnose and troubleshoot issues that may arise in the cluster and may not be well-suited for large scale deployments. Adding Nodes to an Existing 3-node Cluster:The process for adding nodes to an existing cluster depends on the cluster management software you are using. In general, you will need to install the software on the new node and then join it to the existing cluster. You may also need to configure the software to recognize the new node and integrate it into the cluster’s management and failover mechanisms. What happens if more than one node fails in a 3-node cluster?This scenario could result in a complete loss of service if the remaining node does not have the necessary resources to continue providing the service. To avoid this, it is important to have a backup plan in place, such as having additional nodes available to take over if necessary or using cloud-based services to provide additional resources. With the ever-increasing demand for seamless and uninterrupted business operations, having a comprehensive understanding of these crucial aspects can set your organization apart and guarantee its success. From ensuring data protection and minimizing downtime, to providing an overall robust infrastructure, implementing high availability and disaster recovery is a valuable investment for your organization’s future. Embrace the challenge and take the first step towards a more resilient and efficient future by exploring the world of high availability and disaster recovery today! Contact SIOS today for High Availability and Disaster Recovery Solutions. Reproduced with permission from SIOS |
March 11, 2023 |
Cloud Repatriation and HACloud Repatriation and HAThere is a small but growing media buzz about a phenomenon called “cloud repatriation”. In simple terms, cloud repatriation means taking your workload from the public cloud and bringing it back to your own data center. This move could potentially boost the demand for on-premises equipment, such as servers, storage, and networking gear. It could also ramp up the need for solutions that make it easy to manage both on-premises and cloud-based resources. For companies running critical workloads in the cloud, repatriation could have significant impact on the ways they deliver high availability protection. It’s worth noting that the impact of cloud repatriation on the high availability market depends on a few things, like why organizations are choosing to go back to on-premises data centers, as well as other industry trends and competition. So why might organizations opt to leave the cloud? Common Reasons for Cloud RepatriationCost: Running workloads in the cloud can be expensive and costs can be unpredictable, especially if an organization’s usage patterns and requirements change over time. Repatriating workloads back on-premises can help organizations reduce costs, particularly if they have unused capacity or can leverage existing infrastructure. It can also help make IT budgets more predictable. Data sovereignty: Some organizations may be subject to regulation that dictate what country their data is stored in, who has access to it, and how it is protected. Repatriating workloads can give organizations more control over their data and help them comply with data sovereignty laws and regulations. Security: Organizations may have security concerns about running workloads in the cloud, particularly if they handle sensitive data or are subject to strict regulatory requirements. While clouds have a variety of security measures, misconfguration is common and can result in security issues. By eliminating the need for cloud-specific knowledge, repatriating workloads can give organizations more control over their security posture. Latency: Cloud providers may be located far from the organization’s users, which can result in higher latency and slower response times. Repatriating workloads back on-premises can help organizations reduce latency and improve performance for their users. Control: While moving to the cloud saves companies the cost of IT infrastructure management, these savings come at the cost of control. Cloud providers manage and maintain the IT environments according their own schedules. Companies who repatriate their data centers regain complete control over their infrastructure, upgrades, updates, and maintenance. . Lack of Cloud Provider’s specific service or feature: Organizations may find that a particular service or feature is not available in the public cloud, and thus they might decide to repatriate the workload back on-premises. Please note that there could be other additional factors at play, but it’s crucial to keep in mind that these reasons may differ based on the organization’s industry and unique needs. High Availability in the Context of Public Cloud RepatriationFor years, the public cloud has been popular as businesses flock to cloud-based solutions for their computing needs. But according to a recent InfoWorld [link to article] article, we might see a shift in 2023 as companies start to bring their data and workloads back in-house or to private clouds. One major reason for this move is the desire for greater availability and control over infrastructure. High availability (HA) is a critical aspect of modern IT infrastructure, ensuring that applications and services remain accessible and operational even in the face of hardware failures, software bugs, or other unforeseen events. In a public cloud environment, high availability is typically achieved through a combination of redundant infrastructure and automatic failover mechanisms, such as load balancing and auto-scaling. However, some businesses may find that the level of control they have over their cloud infrastructure is limited, and they may have concerns about data security, compliance, and vendor lock-in. These concerns can lead to a desire to bring workloads and data back on-premises or to private clouds. How a Hybrid Cloud Model Can Solve ProblemsOne potential solution to these concerns is to adopt a hybrid cloud approach, where businesses leverage the best of both worlds by combining the scalability and flexibility of the public cloud with the control and security of on-premises or private cloud infrastructure. Hybrid cloud architectures can be designed to provide high availability by replicating data and services across multiple locations, both on-premises and in the cloud. Implementing a hybrid cloud architecture requires careful planning and design, with a focus on ensuring that workloads and data are distributed in a way that maximizes availability while minimizing latency and other performance issues. Some key considerations include selecting the appropriate cloud providers and on-premises infrastructure, ensuring that data is replicated and synchronized effectively, and designing failover mechanisms that can handle both planned and unplanned outages. Another important consideration is the need for effective monitoring and management of the hybrid cloud environment. This includes implementing automated monitoring tools to detect and respond to outages, ensuring that backups are regularly performed and tested, and establishing clear processes and procedures for handling incidents and disasters. SIOS High Availability SolutionsSo, while public cloud adoption has been on the rise for several years, concerns about control, security, and availability are leading some businesses to consider repatriating workloads and data to on-premises or private cloud environments. A hybrid cloud approach that combines the scalability and flexibility of the public cloud with the control and security of on-premises infrastructure can be an effective way to address these concerns while maintaining high levels of availability. In short, nailing a hybrid cloud setup takes serious prep work and know-how. Luckily, SIOS High Availability Solutions has got you covered. We invite you to learn more about our tools and services so you can confidently navigate your hybrid cloud journey. Reproduced with permission from SIOS |