System requirements =================== Hardware -------- OMERO.server ^^^^^^^^^^^^ The system requirements for OMERO.server vary greatly depending on image size and number of users. At a minimum we suggest: - Single core 1.33GHz Intel or AMD CPU - 2GB RAM - 500MB of hard drive space for OMERO.server distribution The recommended OMERO.server specification we suggest for between 25-50 users is: - Quad core 1.33GHz Intel or AMD CPU - 8GB RAM - 500MB hard drive space for OMERO.server distribution - Hard drive space proportional to the image sizes expected (likely between 10 and 100TB) Hard drive space should be proportional to the image sizes expected. The drive space should permit **proper locking**, which is often not the case with remotely mounted shares. See the :doc:`Unix </sysadmins/unix/server-binary-repository>` and :doc:`Windows </sysadmins/windows/server-binary-repository>` binary repository sections for more information. RAM is not going to scale linearly, particularly with the way the JVM works. You are probably going to hit a hard ceiling between 4 and 6GB for JVM size (there is really not much point in having it larger anyway). With a large database and aggressive PostgreSQL caching your RAM usage could be larger. Still, even for a large deployment, it is not cost effective to use more than a few GBs of RAM for this purpose. :doc:`server-performance` provides information about fine-tuning the server processes' memory usage. In summary, depending on hardware layout 16, 24 or 32GB of RAM would be ideal for your OMERO server. If you have a separate database server more than 16GB of RAM may not be of much benefit to you at all. CPU is not something that an OMERO system is usually ever limited by. However, when it is limited, it is almost always limited by GHz and not by the CPU count. So you are not going to get a huge OMERO performance increase by, for example, throwing 24 cores at the problem. In summary, depending on hardware layout 2 × 4, 2 × 6 system core count should be more than enough. :doc:`server-setup-examples` provides details on some production set-ups currently in use by OMERO admins, along with how many users and the amount of data they support, which you may find helpful. OMERO.insight and OMERO.importer ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ The recommended client specification is: - Single core 1.33GHz Intel or AMD CPU - 2GB RAM - 200MB hard drive space for OMERO.clients distribution Large imports may require 4GB RAM. Client configuration ^^^^^^^^^^^^^^^^^^^^ When performing some operations the clients make use of temporary file storage and log directories. By default these files are stored below the user's HOME directory in :file:`$HOME/omero/tmp`, :file:`$HOME/omero/log`, and :file:`$HOME/omero/sessions` (resp. :file:`$HOME\\omero\\tmp`, :file:`$HOME\\omero\\log`, and :file:`$HOME\\omero\\sessions`). If your home directory is stored on a network, possibly NFS mounted (or similar), then these temporary files are being written and read over the network. This can slow access down. The :envvar:`OMERO_TEMPDIR` environment variable may used to set the directory used for temporary files, for example on fast local storage. Software -------- Each component of the OMERO platform has a separate set of prerequisites. Where possible, we provide tips on getting started with each of these technologies, but we can only provide free support within limits. ============== =============================== ======== ======== ======== ========== Package OMERO.server Java Python Ice PostgreSQL ============== =============================== ======== ======== ======== ========== OMERO.importer Required Required OMERO.insight Required Required OMERO.server Required Required Required Required OMERO.web Required Required Required OMERO.py Required for some functionality Required Required OMERO.cpp Required for some functionality Required ============== =============================== ======== ======== ======== ========== For full details on which versions of these are supported for 5.1.x and how we intend to update these going forward, see the :doc:`version-requirements` section.