In a recent email conversation, the relative virtues of Hyper-V and VMWare were being discussed. I stuck my hand up to suggest going with both. Why? Because heterogeneity is a good thing. In this post the topic is two competing hypervisors, but the arguments are the same for almost any technology. And they mostly apply to open technologies as well as to closed, proprietary technologies. Continue reading
A few people in the Ubuntu forums have of late been complaining about things they don’t like. Harsh words have been used. When someone referred to GRUB2 as “crap”, I found myself inspired to write a rant, reminding people that they don’t know how lucky they are. It is reproduced, lightly edited, below…
Apparently some people at University College London (UCL) have achieved data transmission speeds of greater than a terabit per second to a single receiver:
To which I say – phooey!
It’s on fibre – but copper is the future.
Copper is faster, cheaper, and can be installed more quickly. That’s why all the really top-shelf research is concentrating on getting super high speeds over copper. Apparently people are already pushing tens of gigabits over inch-long snippets; it’s just a simple matter of scaling that up. And Australia’s world-class broadband network will be ready and waiting when they do!
UCL? Fibre? What a pack of amateurs. Sheesh.
On a mailing list I frequent, someone asked about policies to help a company avoid losing intellectual property. The generic term for stopping the loss of important information (with loss being not just destruction, but also the wrong people getting it) is data loss prevention or DLP. I was moved to comment… because most DLP policies are not worth a button.
A network operators’ mailing list I am on has just gone through yet another multi-day discussion of how to comply with Microsoft licensing. No-one understands it. I don’t think Microsoft itself understands it. What finally compelled me to write this rant was this quote from some Microsoft document or other: Continue reading
Data loss can be a business killer. There’s a simple test for how badly you need good backups: Imagine all your computers are irrecoverably gone. Just – gone. Did you shrug? Gulp? Or clutch your chest? If the last, you need good backups 🙂 Now let me tell you about ransomware, trojans and backups… Continue reading
Someone just asked (on a network operators list!) whether telnet had a vulnerability, because he knew of a switch that was on the Internet and accessible via telnet… This was my response.
This is probably very old news for many, but I just found a nifty little program for the first time: cpulimit.
Someone asked me recently why spammers often use other people’s addresses in the “From:” field of their spams. They asked “what’s the payoff for the spammer in doing that?” Here’s the answer.
Just for the fun of it, here’s a a case study in troubleshooting. Actually it’s a case study in stupidity too, since I should have figured this out without all the troubleshooting. Anyway, just as an exercise…