EMC has released the EMC Disk Library for mainframe (EMC DLm), a virtual tape library (VTL) system for IBM's zSeries mainframes.
Until 2006, EMC used FalconStor's VTL products. That year, it bought Neartek's VTL assets.
Soon after, it unveiled three new virtual tape products, and in May 2007 it introduced an enterprise-class VTL. EMC DLm brings it into the mainframe arena.
The EMC DLm uses 1TB SATA II disk drives with RAID 6 protection. It comes in two configurations, with either two or four virtual tape emulators. It can scale to offer approximately 500TB of compressed storage capacity while delivering clock speeds of up to 600Mbit/s.