Striping LINSTOR Volumes Across Several Physical Devices
Introduction and considerations In a single sentence, striping can be described as a technique used in storage systems to spread data across multiple physical disks by dividing it into small chunks, which are written sequentially to different drives. Striping volumes across several physical devices in a LINSTOR® storage pool improves performance by distributing I/O operations […]
The CAP theorem & LINBIT
I was recently asked which trade-offs LINBIT’s solution chose under the CAP theorem. The CAP theorem says that a distributed system can provide only two out of three properties: Consistency, Availability, and Partition tolerance. As you can read in the linked article, all practical systems must tolerate partitioning, which leaves us with the choice of whether the software provides consistency […]
Deploying Secure & Redundant Military Data Storage with LINSTOR
Many current software-defined storage (SDS) solutions hinge on the concept of redundant architectures and data center facilities, often relying on multiple systems to guarantee data security and availability. Yet, the evolving landscape demands SDS solutions that can stand strong even without these redundant fallbacks. In scenarios where setting up multiple backup sites or systems isn’t […]
Managing DRBD By Using systemd Units
DRBD® is an important open source software component that can replicate data across multiple servers and can help make applications highly available. Traditionally, system administrators have used tools such as Pacemaker and DRBD Reactor to manage DRBD resources in a cluster and to facilitate high availability (HA) by handling fail-over situations. There are several use […]
A Loophole in the Open-Source License
Recently, a coworker brought to my attention an article titled ‘The messy WordPress drama, explained’. As you might know, my passion is with low-level software, the Linux kernel, and a block device driver called DRBD. WordPress is software a few layers further up in the stack, but what it has in common with my home […]
Performance Tuning for LINSTOR Persistent Storage in Kubernetes
LINBIT SDS, powered by LINSTOR® and DRBD®, is the SDS solution from LINBIT® for managing Linux block storage in Kubernetes. If you’ve used LINSTOR, you know how many knobs can be turned when configuring it. If you’ve followed along with one of our quick start blogs or a README in one of LINBIT’s GitHub repositories, […]
