Sony LTX800W LTO 4 apply latest, enhanced and ultra fine magnetic metal particles, and as well optimizing the disperse technology for LTO Ultrium tape format. Sonys coating and metal quality developed a perfect smoother top surface with increased data tracks 896 with long tape 820 M width 12.65mm. Sony improved the external tape quality as comprehends noise decrease and improving output in the high occurrence array. Sony improved data capacity 800GB native and 1600GB compressed with outstanding single cartridge. Massive storage capacity also enhanced with evenly good and dependable data transfer speed of 120MB/Sec native and 240MB/Sec compressed for Sony LTX800W. Sony emphasized extremely constant servo signal output by making use of prejudice recording hypothesis to optimize servo recording signal control. Sony has better and excellent operation on the smoother tape with a better consistent Servo Writer corresponding to high solidity tracking. The result is significantly better data writing and reading exactness. Newly added to LTO4 tape hardware based 256-bit data encryption AES offers data protection with inclusive consistency, Data encryption offers data prevention during intense data transaction and protect data from all sorts of damaging. The WORM is another function which prevents the over writing, deleting and modification of storage data. WORM cartridge is available separately with different color. Sony LTO 4 WORM Tapes cartridges are compatible with all branded of LTO Ultrium tape drives with excellent backward read and write compatibility.