LTO Ultrium 1 is the first linear tape open generation known as LTO1 backup tapes. The LTO1 cartridge is a 1/2 inch magnetic data storage cartridge for backup tape drives and libraries. The first LTO generation was released in the late 90’s.
The Ultrium1 tape cartridge holds 100GB native capacity, and 200GB compressed capacity. The original manufacturers for LTO were Hewlett Packard (HP), Seagate, and IBM.
The standard form-factor for LTO is known as Ultrium. The LTO1 cartridges are known as "LTO Ultrium1 data cartridges." Numerous manufacturers distribute the LTO-1 cartridge including Imation, Sony, HP, Dell, Fuji, Sun, Maxell, Quantum, TDK, and Verbatim.