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Wierd behaviour of Cyberpower UPS

After finally getting sick of watching RAID rebuilds I bit the bullet and installed a Cyberpower BR850ELCD UPS on my FreeBSD monitoring box. Given I bought what I could find at the instant - there was an immediate threat to the stability of my power - and there were no available serial ports on the monitoring server we took the best available compromise especially as there we could also detect power failures via the network. Naturally, things did not go smoothly... Read More...

Oops - Undeleting a file on Freebsd

A perfect storm of filename completion and inattention resulted in the deletion of a C source code file yesterday (.core starts with .c). As a result I had to find a way to “undelete” a file from a FreeBSD system. Read More...

Change management

There is a wide range of change management practices employed by companies ranging from none through to fairly rigid and long documents that need to be completed before any change can be made - no matter how trivial. Not having change management invites both disaster and avoidable errors; excessive change management is usually a reaction to too many of the former problems. Read More...

FTP on an EMC NS20 Celerra

The EMC NS20 Celerra NAS is a small enterprise grade NAS that we use to support a VMWare Cluster and Office CIFS. It seemed like to obvious candidate to provide an external FTP service; this turned out to be a little less easy than was expected. Read More...