Sun is set to abandon development of its Virtual Storage Manager Open product.

According to sources, Sun will notify customers that the open systems virtual tape library product they have been waiting on for two years, will not be available.

Sun acquired the VSM Open product (which was a competitor to such virtual tape suppliers as Diligent, EMC and Sepatons) from StorageTek.

The sources said that the VSM Open development team would be laid off on 3 August.

When Sunacquired StorageTek last summer, the company said its motivation was to be able to court 100 of IBM's largest accounts. Many of those customers deploy VSM for their MVS mainframes.