LTO Ultrium 5
LTO-5 The current draft has the following specifications: * Capacity of 1.5 TB (1500 GB) * Uncompressed data transfer rate of 140 MB/s * Specifications announced January 19, 2010 * Availability expected in first half of 2010 Notes * Data Capacity and Speed figures above are for uncompressed data. Most manufacturers list compressed capacities on their marketing material. Capacities are often stated on tapes as double the actual value; they assume that data will be compressed with a 2:1 ratio (IBM uses a 3:1 compression ratio in the documentation for its Mainframe tape drives. Sony uses a 2.6:1 ratio for SAIT). See LTO-DC below. The marketing material also uses decimal definitions for byte capacities. * The units for data capacity generally follow the (decimal) SI prefix convention. (eg. mega = 10^6) * The units for data transfer generally follow the binary prefix convention. (eg. mega = 2^20) * Minimum and maximum reading and writing speeds are drive dependent. Positioning times While specifications vary somewhat between different drives, a typical LTO-3 drive will have a maximum rewind time of about 80 seconds and an average access time (from beginning of tape) of about 50 seconds[17].[dead link] Note that due to the serpentine writing, rewinding often takes less time than the maximum. If a tape is written to full capacity, there is no rewind time, since the last pass is a reverse pass leaving the head at the beginning of the tape. Tape durability * 15 to 30 years archival. * 5000 cartridge loads/unloads * Approximately 260 full file passes. (One file pass is equal to writing enough data to fill an entire tape.) The following durability figures are quoted from Imation corporation\‘s 2008 tape specifications:
LTO Ultrium 5
LTO-5
The current draft has the following specifications:
* Capacity of 1.5 TB (1500 GB)
* Uncompressed data transfer rate of 140 MB/s
* Specifications announced January 19, 2010
* Availability expected in first half of 2010
Notes
* Data Capacity and Speed figures above are for uncompressed data. Most manufacturers list compressed capacities on their marketing material. Capacities are often stated on tapes as double the actual value; they assume that data will be compressed with a 2:1 ratio (IBM uses a 3:1 compression ratio in the documentation for its Mainframe tape drives. Sony uses a 2.6:1 ratio for SAIT). See LTO-DC below. The marketing material also uses decimal definitions for byte capacities.
* The units for data capacity generally follow the (decimal) SI prefix convention. (eg. mega = 10^6)
* The units for data transfer generally follow the binary prefix convention. (eg. mega = 2^20)
* Minimum and maximum reading and writing speeds are drive dependent.
Positioning times
While specifications vary somewhat between different drives, a typical LTO-3 drive will have a maximum rewind time of about 80 seconds and an average access time (from beginning of tape) of about 50 seconds[17].[dead link] Note that due to the serpentine writing, rewinding often takes less time than the maximum. If a tape is written to full capacity, there is no rewind time, since the last pass is a reverse pass leaving the head at the beginning of the tape.
Tape durability
* 15 to 30 years archival.
* 5000 cartridge loads/unloads
* Approximately 260 full file passes. (One file pass is equal to writing enough data to fill an entire tape.)
The following durability figures are quoted from Imation corporation\‘s 2008 tape specifications:
