Tag Archives: SAN

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

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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Children often ask me what I do at work (as a storage systems administrator)

And here is the answer for them right in the The Amazing World of Gumball – one of the funniest cartoon ever! See the “hacking” moment in the Safety episode (S03E32) where Anais talks about storage administration: The transcript: Gumball: … Continue reading

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The BeaST again!

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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A simple way to visualize IBM SVC/Storwize performance

Recently I wrote a set of tools to collect and display in CLI performance statistic of IBM Spectrum Virtualize: SVC and Storwize systems. Using various protocols it’s possible to get both detailed performance for each vdisk, mdisk or drive as … Continue reading

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Scan IBM SVC/Storwize system for “SCSI ID Mismatches”

A small addition to the SAN/Storage CLI Toolbox which shows so called SCSI ID (LUN) mismatches on IBM SVC/Storwize systems. This Bourne shell/awk script shows the list of the same vdisks that are mapped with different SCSI IDs. Should be useful … Continue reading

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Accessing HP/3PAR storage systems using Python and SSH

I have just found a small script on Python 3 which I wrote for D81S to test a connection with HP/3PAR 7xxx arrays. It still looks like a good example of the subject, so I decided to store it for … Continue reading

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LLFD – Link, Login, Fabric, Devices

Have just prepared a brief cheat sheet to remind which processes begin when we connect an HBA with the Brocade Fiber Channel switch port, in other words, when a device joins a fabric. LINK Signal transition (light/electrical) Speed negotiation Character … Continue reading

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