Tag Archives: dual-controller

Modelling basic architectures of data storage systems

Posted on 14.10.2020 by mezzantrop

Nowadays majority of the modern and powerful block-level storage systems around the world are built to work in expensive Fibre Channel or more cheaper iSCSI SAN environments. Independent of their class, capacity and performance they are created on well-known principles, … Continue reading →

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Configuring Linux server to work with the BeaST storage system over iSCSI protocol

Posted on 14.07.2018 by mezzantrop

It’s weekend, so I continue to work on the BeaST storage system. Here is my small HOW-TO describing multipath connection with the BeaST from a RHEL/Centos Linux server via iSCSI: Configuring Linux server to work with the BeaST storage system over … Continue reading →

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The BeaST again!

Posted on 03.06.2018 by mezzantrop

I’m working hard now to run the BeaST Storage system on the real hardware and hope to have some results and good news to post in the future. Meanwhile, I have updated The BeaST Classic – dual-controller storage system with RAID … Continue reading →

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The BeaST storage system with ZFS and CTL HA, latest news

Posted on 23.05.2017 by mezzantrop

Finally, I did it! The BeaST storage system with ZFS and CTL HA works in ALUA mode with zpools balanced over controllers. The BeaST Quorum automates Failover/Failback operations. Yes, I have something to say now: Read the full description on … Continue reading →

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Fighting with ZFS to make zpools failover/failback possible

Posted on 12.05.2017 by mezzantrop

After success with single zpool switching, I’m trying now to create a reliable and balanced construction with two controllers and two pools. When one of the controllers is dead, its pool successfully migrates to the other controller. But when the … Continue reading →

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My article on FreeBSD CTL High Availability and ALUA functions is shown on BSD Now TV!

Posted on 15.11.2016 by mezzantrop

In the issue #165 of BSD Now two awesome guys, Allan Jude and Kris Moore, show my paper while explaining FreeBSD CTL HA and ALUA subsystem.

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FreeBSD 11.0-RELEASE Announcement

Posted on 11.10.2016 by mezzantrop

Good news! They finally released it! I’m downloading the new version in a hurry to tame the BeaST to live within. And the most interesting part for me is: “The CTL High Availability implementation has been rewritten. [r287621] (Sponsored by iXsystems)” It looks like FreeBSD supports native dual-node … Continue reading →

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Adding ZFS to the FreeBSD dual-controller storage concept

Posted on 04.05.2016 by mezzantrop

Recently we have created a reliable dual-headed FreeBSD based reliable storage system concept. This is the second paper on the subject. Now we will try to add ZFS to our system. See the result.

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