Servers

The imaging group has four active servers and one legacy server.

The active servers are Odin, Elli, Loki and pmac275. Odin and Elli are our two PACS servers. They operate in tandem. Scans from the scanner console go to both machines. pmac2752 host DCMDB, the automatic preprocessing service and a partial PACS backup. Loki provides login, MATLAB licences and home directories for the image analysis lab.

Odin is nearing end-of-life and will be taken off-line or upgraded by the end of 2016.

Wicnserv has a PACS with copy of the oldest scans. These DICOM data are available from pmac2752. Wicenserv is off-line but can be restarted if needed.

Elli
Elli has a 2.2GHz hex-core Intel Xeon "Ivy Brige" CPU and 32GB of high speed RAM. Online storage hardware is 3 3TB nearline SAS and two 600GB SAS disk drives all connected to a hardware RAID controller. One 600GB drive holds the operating system and applications. The other 600GB drive is a backup for that boot drive. The three 3TB drives are connected as a RAID 5 array that contains the PACS data. A 3TB external drive provides off-line backup. Elli has five high speed network connections with three in use. One connection is to the university internet. A second connects Elli to the scanner private network. A third is used for only for hardware monitoring. The other two are spares. Elli runs Ubuntu 16.04 (Xenial Xerus) LTS. This is an April 2016 release, with long term support through 2019. The PACS server software is DCM4CHEE 2.17.1 running on top of JBOSS 4.2 and mysql 14.14 distribution 5.7.12 for Linux.