This is the first blog from the Glow National Helpdesk! We hope to keep you up to date on what’s happening technically with Glow and give you information about any changes that are coming along, whether these are technical or functional. We’ll also let you know of any planned maintenance periods when Glow will be unavailable.
For our first blog, we thought you might be interested to find out where Glow resides and what it physically looks like. Glow runs across two Datacentres, both located in Edinburgh. We have three environments: Live (in one location) comprising around 130 servers with a mix of Microsoft, Linux and Solaris operating systems, with a Disaster Recovery environment and Test/Approval environment in the other totalling around 120 servers. Most of the servers are blade based servers. On top of this we have two SANs (Storage Area Network) and two large tape based backup facilities.
What do all these servers do?
Well, we do duplicate servers of the same type, so if one fails, the Glow component continues to run – we want to be sure that Glow is available 24 x 7! We’ve got 11 servers running Glow Learn, 5 running Glow Meet, 8 running Glow Mail and 11 running Glow Messenger. There are 6 servers dealing with provisioning, 3 running search, 13 holding the database and a further 6 holding the National Directory and User Accounts. We have over 20 servers providing security and anti virus checks. In addition we also have 16 servers that we use to back up data, for maintenance and for monitoring and alerting plus many others with different functions. And this is only in Live!
So, we’re kept pretty busy looking after all this equipment in the Datacentre, in addition to investigating calls from Local Authorities.
We’d welcome any comments on our blog – is this information of interest? Are there other things that you would you like to see the Glow National Helpdesk blog on?