The PACS Server

Compress Data (Configure Compress Data)

The Compress Data action compresses data stored in a repository which is intended for recovering some storage space by compressing data that is no longer used.  

Set up an action to compress data as follows:

1. Create and save a worklist filter
2. Go to Worklists/Other Lists and find the created filter
3. Select the Configure Compress Data icon
4. Make the desired changes and select the Configure   icon

A Configure Compress Data page will appear for the selected worklist filter:

• Batch size -  maximum number of studies to process each cycle

• Scheduling -  instructs the server when to process the data (usually immediately upon arrival)

• Process current/priors - instructs server how to handle currents and relevant priors. Options include the following:

  • Currents without priors

  • Currents and relevant priors

  • Relevant priors without currents

  • Currents and all priors

  • All priors without currents

• Processing dropped studies - defines how to handle studies that no longer match the criteria when the batch gets processed. Options include the following:

• Process first, before studies on current list - process the backlog before processing new studies matching the criteria

• Process last, after studies on current list - process new studies matching the criteria before processing the backlog

• Do not process - Drop the backlog

• Compression format

  • JPEG Lossless

  • JPEG 2000 Lossless

  • JPEG Lossy

• Override current compression

  • Always - always apply the configured format

  • Only is uncompressed (default) - compress to the configured format only if data is uncompressed

  • If not in an supported compression format - compress to the configured format if the current format is not one of the available compression formats

• Override size difference (%) - compresse dfile is saved if size difference exceeds the defined percentage value. An Empy or zero value disables the check and the compressed file is saved regardless of resulting size difference.

• Process current content - server will process all data on current worklist (not recommended)

To disable the compress data action:

1. Go to Worklists/Other Lists and find the saved filter
2. Select the action's icon
3. In Choose an operation, select disable
4. In Process queued studies,
   • Select Yes to process studies already queued for execution
   • Select No to drop queued studies from the action list without processing them
5. Select the Confirm  icon