Monthly Archives: May 2017

D81S – simple SAN visualisation tool

D81S – my SAN visualisation tool, which I develop to build a full map of a Fibre Channel Storage Area Network by tracing all paths from HBAs to storage logical devices. D81S scans SAN switches and storage systems to create a database of … Continue reading

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Another challenge for those, who can exit vi

Using ed, write a hello_world.txt file with two lines “Hello World!” and “ed is the best editor”. Don’t forget to exit 🙂

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First sketches of the new BeaST Grid family storage system

“The BeaST Grid” is a work name of the reliable storage cluster concept. It will consist of a few Controller Nodes with optional internal drives and several Drive only Nodes. All nodes are commodity computers with internal drives. Controller Nodes will … Continue reading

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

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

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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Quick MS Excel IsTime() and TypeIs() functions solution

I never thought I would write hints for MS Excel VBA, nevertheless here is the first one. It turns out, there is a scripting problem with identifying value as a time in a cell on a worksheet. I was curious … Continue reading

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