The IBM 95P4436 is an LTO-4 tape cartridge that has an 800 GB native capacity and 1.6 TB compressed capacity. Transfer rates for the 95P4436 are 80 MB/s native and 160 MB/s compressed. The 95P4436 is compatible with LTO-4 tape drives and auto-loaders only. The IBM 95P4436 complies with all LTO standards and is therefore compatible with all LTO-4 tape drives and auto-loaders. The 95P4436 also features the LTO-CM (Linear Tape Open – Cartridge Memory) which stores cartridge usage related information such as past errors and usage history and which can be read using an LTO-CM reader (some drives come equipped with one and others do not, in which case you should buy an external reader that can display the information in a useful manner).