Author Archives: Erwin van Londen

About Erwin van Londen

Master Technical Analyst at Hitachi Data Systems

Appalling state of Storage Networks

In the IT world a panic is most often related to a operating systems kernel to run out of resources or some unknown state where it cannot recover...

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CiscoLive! Melbourne – 2016

Having to miss last years edition I was fortunate enough to be able to attend this years CiscoLive! conference in my hometown Melbourne again. Venue was excellent as [..]

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9.2 – Long Distance configurations – CWDM/DWDM

One of the most complex ways of implementing long distance connectivity is using CWDM or DWDM extension equipment. Reason being is that the technology is often fairly complex...

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Photography Books and Courses

Below some ebooks and online courses I find highly useful for not only the beginner but also for the seasoned photographer. Evan Sharboneau’s e-book contains practical tips on [..]

Photography

Traffic Isolation Zoning – The mistake of FOS

If there is one thing I would consider “the” blunder of FOS engineering it has to be Traffic Isolation zoning. I mean, creating such an administrative nightmare with [..]

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1.2 Flow Vision

This subject will be divided in two sections. Flow Monitor and Generator Flow Mirror In FOS 7 the concept of frame-monitoring was introduced on Condor2 and Condor3 ASICs....

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Time to rethink your zoning strategy –peerzones

With the advance of the FC-GS and FC-SW protocols the change, or more the enhancement, of being able to use Target Driven Zoning provided Brocade with the option [..]

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tim_txcrd_z What is it? What does it represent?

I get a huge amount of questions and nervous customers who tell me they see this counter increasing at an alarming rate and want to know if this [..]

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Why FDMI is compulsory (or should be!!)

FDMI stands for Fabric Device Management Interface and is such an enormously cool feature and unfortunately one of the least used. From an operational management perspective FDMI provides [..]

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9.1 – Long Distance configurations – Direct Connect

Switch fabric configurations over dark fibre, direct connect, links are not much different then connecting them when they sit next to each other. There is no physical interference...

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