Biomedical Engineering Reference
In-Depth Information
that all authentications are handled by Windows Active Directory. It is
the Active Directory that controls all aspects of user permissions,
irrespective of the platform being used, making it much easier to manage
the system. The only exceptions to this are root access to the servers,
which is independent and will authenticate as usual via the standard/etc/
passwd mechanism.
Originally, the fi rst hardware purchased for the OGT 'omics platform
was a complete system comprising a Beowulf compute cluster of a master
server and four nodes. The master server handled all processes and
farmed out jobs to the nodes on the cluster. All data was stored on a 1 TB
DAS disk array and there was tape library to handle backups. This is
shown in Figure 10.1.
The advantage of buying a pre-confi gured system was that it was ready
to go on arrival. It reduced the time required to get up and running and
make the 'omics platform operational. Also, although some of the group
had advanced Linux skills, these were short of the level needed to
Overview of the IT system showing the Beowulf
compute cluster comprising a master server that
passes out jobs to the four nodes. The master server
also provides access to the DAS disk array and
performs data backups using a tape library
Figure 10.1
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