Two years, one rack closet
It has been about two years since I have visited a specific rack closet, and took pictures. Several days ago I have visited the same rack closet, and took some new pictures. You can tell time went by 😉
![](/files/Pictures/rack-front-scaled.jpg)
It has been about two years since I have visited a specific rack closet, and took pictures. Several days ago I have visited the same rack closet, and took some new pictures. You can tell time went by 😉
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Air Conditioning is considered a complicated matter. Not that it is so mathematically, but measurements, except for the general notion of “hot”, “hotter”, “cold” and “colder” are rather complicated, and require tools which are not common with the maintainers of server rooms. We trust flow diagrams, and air flow schema, however, the outcome should be…
I have an old Dell server (R610, if it’s important) and I seem to fail to connect to its iDrac console via Java. No other options exist, and the browser calling Java flow fails somehow. I have found an explanation here, and I will copy it for eternity 🙂 First – Download the latest JRE…
This post will offer several tips and tricks for wiring cables into new rack closets. It uses pictures as a demonstration of what to do and what not to do. It is based on a job I have taken part in with several other companies, moving the server farm to a new location. This job…
Performance tuning is a sort of art. You know what you expect to reach, and you somehow strive towards that through selective tuning. Either your OS memory utilization, your network settings, NFS mount parameters, etc. I’ve been to a customer who’s server acted funny. First, it had high load average – for an idle server…
I have OnePlus 7 Pro. Following the recent update to Android 9, (Just now updated to Android 10, so I don’t know if this problem still relevant) – Once every 2-3 weeks or so, the phone would not wake up from sleep, and remain having a black screen. Long-pressing on the power button has no…
Here are some pictures of the server upgrade. Old server: P2 300MHz, with 256MB RAM: Old server, in its old location New server: Xion 3GHz+HT+EMT64, with 1GB RAM. Nice: Dell PowerEdge 1800. Nice LEDs 🙂 The whole server room during the upgrade. Notice the 3com router/switch! You’ll be able to recognise it by its antenas…