SilhouetteCentral Upgrade

To upgrade SilhouetteCentral, extract the contents of the SilhouetteCentral ZIP file and use it to replace the existing contents of the SilhouetteCentral web application folder:

Shutdown the IIS App Pool before extracting the files, then restart it after the files are replaced.
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 upgraded. The SilhouetteCentral web application is not accessible to any users while the database is upgrading.

After the database upgrade completes, you may be placed part way through the configuration wizard as described in previous sections of this guide. If this occurs it means that the new version required additional configuration (or options).

Specify the settings, as required and click Next 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 v4.8. 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 sync 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 may cause upgrades to fail. These data consistency issues must be fixed before an upgrade can complete.
SilhouetteLink is not compatible with v4.8.
Once upgraded review the user groups and permissions granted as the permissions model has changed significantly.

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 v4.4, or beyond, 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 configured in Silhouette. The upgrade assumes is that the patients seen in different time zones will be in different units. If that is not the case for your system then contact ARANZ Medical for support while upgrading.

From pre-v4.6

To v4.6+

Version 4.6 reintroduces the concept of Wound State which was part of version 3 Silhouette but had previously been missing from the version 4 product.

If you are upgrading from a v3 Silhouette then the wound state records will be upgraded. These upgraded entries will appear as wound state changes on the relevant patient and wound time lines. The time given to the wound state records is 00:00 (midnight), in some case if a wound was healed on the same day as an assessment was completed for that wound then the healed state will show earlier than the assessment on the time line.

All wounds created in previous v4 versions of Silhouette are given an Open state based on the creation date and time of the wound.

This wound state upgrade requires the time zone mappings mentioned above in the v4.4 upgrade. If the time zone to unit mappings are not present, or are incomplete, then you will be asked to specify them during the upgrade of SilhouetteCentral.

Version 4.6 wound state also allows you to update the current wound state as part of a wound assessment. When upgrading any assessments will have a blank associated wound state record.

To v4.8+

v4.8 upgrade removes previous blockers upgrading v3 systems, specifically systems with multiple patient identifiers and with duplicate wound indexes can now be upgraded. v3 systems with these properties should be directly upgraded to v4.8 without any intermediary steps.

When upgrading v3 systems with Multiple Patient Identifiers, you will be asked to identify a single identifier for use within Silhouette during the upgrade process. All other identifiers will be migrated to standard note fields as part of the patient details.

In some rare cases this upgrade can leave some patient records without patient identifiers to display within Silhouette. Contact ARANZ Medical support if you require some data migration other than that provided by the standard upgrade script.