Optimizing DRBD for Persistent Memory

Persistent Memory (PMEM) is an exciting storage tier with much lower latency than SSDs. LINBIT has optimized DRBD for when its metadata is stored on PMEM/NVDIMM. This article relates to both: Traditional NVDIMM-N: Some DRAM is accompanied by NAND-flash. On power failure, a backup power source (supercap, battery) is used to save the contents of […]

Monitoring Linux HA Clusters with Prometheus

You’ve likely heard of Prometheus, the open-source monitoring and alerting solution originally developed at SoundCloud. Prometheus was the second project incubated by the Cloud Native Computing Foundation in 2016 (the first being Kubernetes), and is used by companies like Google, Red Hat, and Digital Ocean as a scalable and efficient way to monitor infrastructure in a […]

How to make DRBD compatible to the Linux kernel

The Linux kernel’s interface towards device drivers is not set in stone. It evolves with the evolvement of Linux. Sometimes driven by hardware improvements, sometimes driven by general evolution of the code base. In tree drivers this is not a big issue since they get changed as the interfaces are modified, therefore are called “tree […]

Performance Gains with DRBD 10

A key factor in evaluating storage systems is their performance. LINBIT has been working to further improve the performance of DRBD. The recent DRBD 10 alpha release demonstrates significant gains. The performance gains particularly help with highly concurrent workloads. This is an area that has been steadily rising in importance, and looks set to continue […]

LINSTOR LDAP Authentication

LINSTOR LDAP Authentication

New Features of LINSTOR Release – July 2019 The Newest LINSTOR release (July 2019) came with a bunch of new features, and one that is really worth highlighting: The developers of LINSTOR, the storage management tool for all things Linux, announced that the latest release comes with authentication for LDAP. Software-defined storage consumers were demanding […]

LINBIT Announces DRBD Support for Amazon Linux

The Digital Transformation The concept of “Digital Transformation” for executive teams at Fortune-sized companies is no longer a new and flashy phrase. An important part of this Digital Transformation is how companies think about cloud computing. When once, organizations seemed to have only 2 decisions: enter the cloud, or keep everything on premise; now the […]

Kubernetes Operator: LINSTOR’s Little Helper

Before we describe what our LINSTOR Operator does, it is a good idea to discuss what a Kubernetes Operator actually is. If you are already familiar with Kubernetes Operators, feel free to skip the introduction. Introduction CoreOS describes Operators like this: An Operator is a method of packaging, deploying and managing a Kubernetes application. A […]

NuoDB on LINSTOR-Provisioned Kubernetes Volumes

NuoDB on LINSTOR-Provisioned Kubernetes Volumes

Introduction: NuoDB and LINBIT put our technologies together to see just how well they performed, and we are both happy with the results. We decided to compare LINSTOR provisioned volumes against Kubernetes Hostpath (Direct Attached Storage) in a Kubernetes cluster hosted in Google’s cloud platform (GCP) to show that our on-prem testing results can also […]

Coming Soon, a New DRBD Proxy Release

One major part of LINBIT Disaster Recovery is DRBD Proxy, which helps DRBD with long-distance real-time replication. DRBD Proxy mitigates bandwidth, latency, and distance issues by buffering writes into memory, ensuring that your WAN latency doesn’t become your disk throughput. The upcoming release of the DRBD Proxy will come with a few new tools to […]

DRBD/LINSTOR vs Ceph – a technical comparison

INTRODUCTION The aim of this article is to give you some insight into CEPH, DRBD and LINSTOR by outlining their basic functions. The following points should help you compare these products and to understand which is the right solution for your system. Before we start, you should be aware of the fact that LINSTOR is […]