--- title: "Communication errors with VXA-320 tape drives" slug: "communication-errors-with-vxa-320-tape-drives" updated: 2023-11-09T01:23:31Z published: 2023-11-09T01:26:19Z canonical: "docs.retrospect.com/communication-errors-with-vxa-320-tape-drives" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.retrospect.com/llms.txt > Use this file to discover all available pages before exploring further. # Communication errors with VXA-320 tape drives Resources Some VXA-320 tape drives respond to a different command length than other VXA-320 drives. Unfortunately, Retrospect cannot resolve this difference without user intervention. If your VXA-320 drive exhibits communication problems with Retrospect, such as “incorrect scsiServiceResponse” messages displaying in the Mac OS X system log (viewable with the Console application in /Applications/Utilities/), then you will need to edit the retro.ini settings file to correct the problem To edit the retro.ini file, take these steps: In the Retrospect System Preferences pane, stop the Retrospect Engine. Locate the retro.ini file at Open the retro.ini file with a text editor, such as TextEdit. Add the following lines to the end of the existing text: Save the edited retro.ini file. Start the Retrospect Engine in System Preferences pane. Last Update: February 14, 2012