1 === One is glad to be of service ===
3 I've been taking care of big iron since my first job as
4 an EmployedWorker and in the '90s I've been providing free,
5 but commercial quality, telecommunication service to a total
6 of 450 registered users with my own BullettinBoardSystem
9 I've been using many different OSes, see SystemArchitectRole
12 === Production systems ===
14 I've designed and helped implementing the following
15 production systems, all of which are still in service:
17 * '''DevelerCompany's IT infrastructure''' - Leveraging
18 my earlier work for SiriusCompany, for over 6 years I've
19 been continuously growing and restructuring the network,
20 the servers and their intricate mesh of services and
21 support scripts. The main server, called {{trinity}},
22 contains 1TB of storage and offers file storage, user
23 authentication, e-mail, and many web-based services to a
24 highly heterogeneous and complex environment comprising
25 several versions of Linux, MacOsX and Windows clients.
26 Another server, called {{asterisk}}, acts as a VoIP PBX
27 and secondary slave for many (but not all) of {{trinity}}'s
30 * '''http://www.fieremostre.it/''' - A cluster of 4 RedHat
31 servers, two web frontends and Java appservers and two
32 database and filesystem backends with hw SCSI RAID5.
33 Fully managed remotely, including power fencing and
34 robotized tape juggler.
36 * I've configured and installed a cluster of 5 nodes on
37 blade CPU boards with shared fiber-channel RAID storage.
38 I used a pre-release of RedHat's Advanced Server product
39 to implement a shared storage pool of 1.5TB with GFS1.
40 The system initially went to production without the GFS
41 pool because of reliability concerns with this new
44 * '''Genexpress Lab''' - A combo of two servers, each
45 acting as a gateway and file server for a security ring.
46 This design was done for the Department of Bioengineering
47 of the University of Firenze, in Prato's Scientific Center.
49 My philosophy is using mainstream hardware whenever possible
50 and concentrate most services on few phisical systems.
51 The savings in cost can be used to increase availability and
52 performance through redundancy. This strategy leads to
53 datacenters that are easy to understand and maintain, while
54 at the same time scaling up much better than
55 traditional asymmetrical solutions (like web server,
56 mail server, db server...).
58 Being fond of UNIX culture, I tend to keep my systems as
59 open as possible and at the same time very secure.
61 TODO: add a list of server software I use/know