The new category that TSM creates for 3590 scratch volumes can duplicate a category already assigned to another application and cause loss of data. If you are currently sharing a 3494 library between TSM and other applications or systems and you enable TSM's support for 3590 drives, you need to be careful. TSM automatically creates a third category for 3590 scratch volumes by adding one to the existing scratch category for any 3494 libraries defined to TSM. (See Categories in 349X Automated Libraries for more information about the categories.)
To ensure that all steps are followed to prevent potential data loss, enable 3590 support by adding the following line to the server options file (dsmserv.opt):
ENABLE3590LIBRARY YES
Stop and start the server to make this change effective.
To prevent loss of data, do either one of the following before enabling 3590 support:
Check in the TSM volumes that you put in the insert category in step 1.
For more information about checking in volumes, see Informing the Server about New Volumes in a Library.