How to integrate MinIO with LINSTOR to distribute data on Kubernetes

While LINSTOR is on the way to becoming an industry standard as software defined block storage, MinIO stands out as the number one product in the object storage world. LINBIT has been working in integration with MinIO for a long time and has signed infrastructures that can be used safely in business solutions. The biggest […]

Using DRBD block devices for kubevirt

This demonstrates how to use DRBD block devices provisioned by the LINSTOR CSI driver. We assume that the CSI driver is working (e.g., by installing it via it operator/helm chart), and that kubevirt also works and that live migration is enabled and tested. Live migration is not a requirement, but it a lot more fun. […]

Booting diskless Windows clients via WinDRBD

Those who wonder what we’ve done since posting the previous blog article on WinDRBD will be interested to hear that we have been working hard to get Windows to boot over a WinDRBD device. The remote DRBD device can be hosted on a Linux machine which makes advanced features, such as fine-grained snapshots, readily available […]

IOPS World Record Broken – LINBIT Tops 14.8 million IOPS

In a performance test LINBIT measured 14.8 million IOPS on a 12 node cluster built from standard off-the-shelf Intel servers. This is the highest storage performance reached by a hyper-converged system on the market, for this hardware basis. Even a small LINBIT storage system can provide millions of IOPS at latencies of a fraction of […]

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 […]