SilhouetteCentral Upgrade

In order to upgrade extract the contents of the SilhouetteCentral ZIP file and replace the existing contents in inetpub wwwroot folder (refer to SilhouetteCentral Installation instructions for how the exact folder paths are specified/ described).

Shutdown the IIS App Pool before extracting the files, then restart it after the files are copied across.
Before extracting the new files make sure you delete everything except the "Files" folder (the "Files" folder contains all of the configuration and patient data).

After installation, it is possible a "database is upgrading" screen is displayed as the existing database content is converted to the newer format. SilhouetteCentral is not accessible to any users while the database is upgrading.

Likewise after the database upgrade page dismisses itself automatically you may be placed part way through the configuration wizard as described previously. If this occurs it means that additional mandatory configuration (or options) have been added in the later version.

Specify the settings, as required and click Next -> Next -> Next, etc. to complete the wizard (the wizard is automatically populated with all originally specified information).

After an upgrade which changes the major version number (e.g. v3 to v4) then the system settings should be reviewed for desired configuration, e.g. users, groups, units, notes definitions, etc.

Versions

The method specified above can be used to upgrade SilhouetteCentral from any version greater than v3.10. The following notes are provided as there are some versions where additional care must be taken.

From v3.x

To v4.x

Upgrading from v3.x to v4.x is a major upgrade and the following points need consideration. If you have any queries or concerns please contact ARANZ Medical Limited before upgrading, at: support@aranzmedical.com

For versions prior to v3.10 of the software, it is recommended that a customer support representative be contacted to assist with this process.
Tissue Type Classification feature is not available in v4.4. Any tissue type outlines need to be segregated in the data before upgrading.
The storage format of the image captured date is converted based on the Default Timezone specified in the Organization Settings. As such, you should verify that the Default Timezone setting is correct prior to starting the upgrade. If an adjustment has to be made, then synced the change to all SilhouetteConnect devices before proceeding with the upgrade.

The automatic upgrade process assumes that all image capture dates are from a single timezone. If data should be split into multiple timezones this needs to be performed by a customer support representative.

Data consistency issues (e.g. duplicate wound IDs for a single patient) this may cause upgrades to fail. These data consistency issues must be fixed before an upgrade can complete.
SilhouetteLink is not compatible with v4.4.

From pre-v4.3

To v4.3+

Upgrading to v4.3 or beyond requires that a synchronization instance of SQL Server be available on SilhouetteCentral to support the SilhouetteConnect synchronization process. The synchronization instance of SQL Server needs read and write access to the appropriate files\mdfcreation directory.

It is also recommended to modify the SilhouetteCentral web site configuration in IIS to set Preload Enabled to True and to set the Application Pool Start Mode property to Always Running. The optional IIS Application Initialization feature is required to enable these properties.

See the following topics for more details:

From pre-v4.4

To v4.4+

Upgrading to or beyond v4.4 changes the way assessment dates are stored. Assessment creation dates are changed to record the local time plus an offset from UTC, as well as recording the time zone name of where they were created.

The time zone database used by Silhouette is the iana time zone database. Information on the iana time zone database can be found on the website https://www.iana.org/time-zones.

During the upgrade to v4.4 the upgrade will ask you to select an appropriate time zone to use for historical assessments. Selecting the correct time zone is important as the offset from UTC applied is dependent on any seasonal clock changes for that time zone.

The upgrade will ask you to specify a time zone per unit in the database. The assumption is that if you do use the system between time zones then the patients seen in different time zones will be in different units.

If the assumption above does not hold for your system then you will need to contact ARANZ Medical for support while upgrading.