Virtualization, Cloud, Infrastructure and all that stuff in-between
My ramblings on the stuff that holds it all together
Monthly Archives: January 2011
Home Labbers beware of using Western Digital SATA HDDs with a RAID Controller
Posted by on January 31, 2011
I recently came across a post on my favourite car forum (pistonheads.com) asking about the best home NAS solution – original link here. What I found interesting was a link to a page on the Western Digital support site stating that desktop versions of their hard drives should not be used in a RAID configuration [...]
How to Configure a Port Based VLAN on an HP Procurve 1810G Switch
Posted by on January 27, 2011
I have a new switch for my home lab as I was struggling with port count and I managed to get a good deal on eBay for a 24-port version – it’s also fan-less so totally silent which is nice as it lives in my home office. I am re-building my home lab again (I’m [...]
Be your own Big Brother
Posted by on January 25, 2011
During my work and personal life I’ve travelled around a lot – sometimes by car sometimes flying, I’ve always held an odd fasincation in being able to visualise where I have been over time and tot up just how far I’ve travelled in a period. When I started cycling again a couple of years [...]
Presenting at Cloud Expo Europe 2011
Posted by on January 24, 2011
I will be presenting with another VMware colleague, Aidan Dalgleish at Cloud Expo Europe 2011 which is being held in London on the 2nd-3rd February. Our session is on 2nd Feb at 11.30 – you can find the full schedule here and there is more information about the event here, it’s free if you [...]
Silent Data Corruption in the Cloud and building in Data Integrity
Posted by on January 20, 2011
I was passed a link to a very interesting article on-line about silent data corruption on very large data sets, where corruption creeps undetected into the data read and written by an application over time. Errors are common in reading from all media and this would normally be trapped by storage subsystem logic and [...]
Nexentastor CE performance not as good as expected with SSD Cache check it is actually working
Posted by on January 19, 2011
I encountered this problem in my lab – I have the following configuration physically installed on an HP Microserver for testing (I will probably put it into a VM later on however) 1 x 8Gb USB flash drive holding the boot OS And the following configured into a single volume, accessed over NFSv3 (see this [...]
Nexentastor, When 1Gb just isn’t enough
Posted by on January 18, 2011
I have been trying to get my Nexentastor SSD/SATA hybrid NAS working this last week and I’ve found that the web UI grinds to a halt sometimes for me, I couldn’t find a UNIX ‘top’ equivalent quickly but the diagnostic reports that you can generate from the setup menu command line did indicate that [...]
London VMware User Group VMUG Feb 10th 2011
Posted by on January 17, 2011
It’s that time again, if you are in the UK – or anywhere nearby then register and get yourself over to the London VMUG. I’m not sure if I can make this one, due to work commitments and this will be the 1st VMUG for about a year and a half where I won’t [...]
Finding Nexentastor CE IP address from the Command Line
Posted by on January 13, 2011
I found that I had a problem with my Nexentastor CE appliance build and needed to do some configuration by the command line – the quickest way to do this is to logon as root (using the password you specified during the installer) Then type setup, that gives you a quick access way to [...]
Passed VCAP-DCD Exam
Posted by on January 12, 2011
After a bit of confusion and receiving the wrong exam results via email I got a nice email with a PDF copy of my scope report this morning, so I have now passed my VCAP-DCD 411 exam, with a mid-300’s score. I did the beta exam (and because of availability and my schedule I had [...]
