Definition

LTO-10 (Linear Tape-Open 10)

Contributor(s): Ed Hannan

LTO-10 is a planned tape format from the Linear Tape-Open (LTO) Consortium. LTO-8 and LTO-9 formats have also been outlined, but no release dates have been announced for any of the three formats. As of October 2015, the current version is LTO-7.

Draft LTO-10 specifications call for 120 terabytes (TB) of compressed capacity, sustained data transfer rates of up to 2,750 megabytes per second (MBps) for compressed data, uncompressed capacity of 48 TB and an uncompressed transfer rate of 1,100 MBps. Capacity and data transfer rates for LTO-10 assume a 2.5:1 compression ratio.

As with versions LTO-5, LTO-6 LTO-7, LTO-8 and LTO-9, LTO-10 will offer partitioning, encryption and the write once, read many (WORM) feature.

Previous LTO versions

LTO-1 was the first version of the LTO magnetic tape data storage technology to serve as an open standard substitute to the available formats of the day. It had native capacity of 100 GB and a native transfer speed of 20 MBps.

LTO-2 offered 200 GB capacity (400 GB compressed) and 40 MBps throughput (80 MBps compressed), doubling the speed and capacity of LTO-1. Capacity and data transfer rates for LTO-2 assume a 2:1 compression ratio.

LTO-3 doubled native capacity to 400 GB (800 GB compressed) and transfer rates to 80 MBps (160 MBps compressed). It was the first LTO format to feature WORM.

LTO-4 again doubled capacity to 800 GB native capacity (1.6 TB compressed) and boosted transfer rates to 120 MBps (240 MBps compressed). LTO-4 had 256-bit Advanced Encryption Standard-Galois Counter Mode drive-level encryption.

LTO-5 boosted native capacity to 1.5 TB (3 TB compressed) and data transfer rates to 140 MBps (280 MBps compressed) with a 2:1 compression ratio.

LTO-6 features 2.5 TB native capacity (6.25 TB compressed) with native sustained data transfer rates as high as 160 MBps (400 MBps compressed).

LTO-7 offers 6.4 TB native capacity (15 TB compressed) with native sustained data transfer rates of 315 MBps (750 MBps compressed).

LTO-8 draft specifications call for it to offer 12.8 TB native capacity (32 TB compressed) with native sustained data transfer rates as high as 472 MBps (1,180 MBps compressed).

The projected LTO-9 specifications are 26 TB native capacity (62.5 TB compressed) and 708 MBps throughput (1,770 MBps compressed).

Capacity and data transfer rates for LTO-5, LTO-6, LTO-7, LTO-8 and LTO-9 assume 2.5:1 compression ratios.

This was last updated in October 2015

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