The Benefits of High-Availability (HA)

This article describes the reasoning behind and the benefits of a high-availability (HA) solution for providing services and applications. This article is intended as a general overview and introduction to HA, with a nontechnical reader in mind. Background on High-Availability According to High-availability is the ability of a system to operate continuously without failing for […]

Deploying a Highly Available NFS Cluster on RHEL 9 with DRBD Reactor Tech Guide

The Deploying an HA NFS Cluster with DRBD and DRBD Reactor on RHEL 9 or AlmaLinux 9 tech guide gives instructions for setting up and configuring a high-availability (HA) NFS three-node cluster, by using DRBD® and DRBD Reactor. DRBD Reactor is a cluster resource manager developed by LINBIT® that can be simpler to configure and implement than […]

DRBD’s Hardware & Environment Requirements

Whether you are considering DRBD® as a data replication solution to achieve high-availability or disaster recovery in your deployments, or you are seasoned in its use already, there are some hardware and environment requirements that you should consider. Memory Requirements and Maximum Device Size DRBD can replicate block devices in real-time or asynchronously, depending on […]

Making Primary Storage in CloudStack Highly Available by Using LINSTOR

Members of the LINBIT® team just returned from the CloudStack Collaboration Conference 2022 in Sofia, Bulgaria. CEO Philipp Reisner and solutions architect Yusuf Yildiz both gave presentations about integrating LINSTOR® with CloudStack. The Benefits of Using LINSTOR in CloudStack By using LINSTOR, you can have highly available CloudStack primary storage for your virtual machine (VM) […]

Deploying LINSTOR by Using a Juju Charm for Production-Ready Kubernetes Storage

This blog is a walk-through tutorial on how to deploy LINSTOR®, by using a LINBIT® authored Juju charm, into a MicroK8s environment. You can use LINSTOR as a full-featured and production-ready replacement for MicroK8s’s “hostpath” storage. Defining Terms LINSTOR is an open source software-defined storage (SDS) management solution developed by LINBIT. LINBIT also develops DRBD®, […]

Creating Persistent Storage for Kubernetes by Integrating LINBIT SDS Tech Guide

LINBIT® SDS is the product name for LINBIT’s LINSTOR® software, and the plug-ins and drivers that work with it to give you the tools to create software-defined storage solutions for your high-availability and disaster recovery problems. You can use LINSTOR independently to control DRBD® and other block storage devices native to Linux, without a cloud-based […]

Software-Defined Storage Solves High-Availability & Disaster Recovery Problems

Software-defined storage (SDS) is a technology used in data storage management that intentionally divides storage duties of software and hardware1. Software is responsible for: Provisioning capacity Protecting data Controlling data placement Physical hardware is where the actual data (the 0s and 1s) is2 stored. SDS allows the storage hardware to be replaced, updated, and extended without […]

Implement Fencing Within a Pacemaker-Managed Cluster Using DRBD 9’s Quorum Feature

Implementing fencing properly is a way to ensure the consistency of your replicated data by avoiding “split-brain” scenarios. When communication between cluster nodes breaks, fencing prevents the data from diverging among your replicas. DRBD® and Pacemaker each have their own implementations of fencing. To be clear, this article only talks about how to achieve fencing […]

Using Velero & LINSTOR to Back Up & Restore a Kubernetes Deployment

This article will describe how you can use LINSTOR® and Velero to back up and restore a Kubernetes deployment, including persistent storage volume data, to and from a remote AWS S3 bucket. This post builds on a solution described in an earlier article, Backing Up Your Kubernetes Deployments With Velero & LINSTOR. You may want to […]