Data Archiving Blog

12” LD6100 and LF6600 Drives

ASTI’s offers replacement drives and repair services for legacy large format 12” TrueWORM Technology™ LD6100/LF6600 drives utilized as stand-alone drives or in FileNet OSAR libraries. The drives were best suited for applications requiring permanent archival storage of in high-volume multi-user environments where fast access to data was important.

Using ablative WORM technology and recording on a glass substrate, the 12” drives offer permanent unalterable storage with a minimum data life of 30 years. Dual head can write both sides simultaneously eliminating the need to remove and flip the disk resulting in reduced mechanical wear and much faster response times.

Contact Alliance Sales to purchase drives or media (719) 593-7900 or submit a Request for Quote.


  • Capacity: 12GB
  • On-line Capacity: 12GB
  • Sector Size: 1024 Bytes
  • Interface: SCS II (fast)
  • Data Buffer: 1MB
  • Burst Transfer Rate to host: 10MB/s
  • Sustained Transfer Rate: 2.7MB/s (read) - 1.3MB/s (write and verify)
  • Average Access Time: 100ms
  • Average Rotational Latency: 35ms
  • Spindle Speed: 858RPM
  • Spin-up Time: 3.0sec
  • Spin Down Time: 1.5 sec
  • MTBF: 20K hours
  • Backward Read: LM4000