Speed matching
To improve system performance, the Ultrium 3 and later Tape Drives use a technique called speed
matching to dynamically adjust its native (uncompressed) data rate to the slower data rate of the attached
server.
Channel calibration
The channel calibration feature of the Ultrium 3 and later Tape Drives customizes each read/write data
channel for optimum performance. The customization enables compensation for variations in the
recording channel transfer function, media characteristics, and read/write head characteristics.
Power management
The Ultrium 3 and later Tape Drive's power management function controls the drive's electronics so that
part of the electronics completely turn OFF when circuit functions are not needed for the drive's
operation.
Media
The library uses Ultrium Tape Cartridges that provide up to 12 TB native capacity (up to 30 TB with 2.5:1
hardware data compression) for LTO 8 tape drives, 9 TB native capacity (up to 22.5 TB with 2.5:1
hardware data compression) with M8 initialized tape cartridges for LTO 8 tape drives, 6 TB native
capacity (up to 15 TB with 2.5:1 hardware data compression) for LTO 7 tape drives, 2.5 TB native capacity
(up to 6 TB with 2.5:1 hardware data compression) for LTO 6 Tape Drives, up to 1.5 TB native capacity
(up to 3 TB with 2:1 hardware data compression) for LTO 5 tape drives, up to 800 GB native capacity (up
to 1.6 TB with 2:1 hardware data compression) for LTO 4 tape drives, and up to 400 GB native capacity
(up to 800 GB with 2:1 hardware data compression) for LTO 3 tape drives.
v IBM Ultrium 8 Tape Drives can read and write LTO Ultrium 8 and Ultrium 7 Data Cartridges.
v IBM Ultrium 8 Tape Drives can read and write initialized M8 Data Cartridges.
v IBM Ultrium 7 Tape Drives can read and write LTO Ultrium 7 and Ultrium 6 Data Cartridges. Ultrium
7 tape drives can read LTO Ultrium 5 Data Cartridges with improved data rates. Ultrium 7 tape drives
cannot read initialized M8 cartridges.
v IBM Ultrium 6 Tape Drives can read and write LTO Ultrium 6 Data Cartridges. Ultrium 6 tape drives
can read and write LTO Ultrium 5 Data Cartridges at original Ultrium 5 capacities, and can also read
LTO Ultrium 4 Data Cartridges with improved data rates.
v IBM Ultrium 5 tape drives can read and write LTO Ultrium 5 Data Cartridges. IBM Ultrium 5 tape
drives can read and write LTO Ultrium 4 Data Cartridges at original Ultrium 4 capacities, and can also
read LTO Ultrium 3 Data Cartridges with improved data rates.
v IBM Ultrium 4 tape drives can read and write LTO Ultrium 4 Data Cartridges. IBM Ultrium 4 tape
drives can read and write LTO Ultrium 3 Data Cartridges at original Ultrium 3 capacities, and can also
read LTO Ultrium 2 Data Cartridges with improved data rates.
v IBM Ultrium 3 Tape Drives can read and write LTO Ultrium 3 Data Cartridges. IBM Ultrium 3 Tape
Drives can read and write LTO Ultrium 2 Data Cartridges at original Ultrium 2 capacities, and can also
read LTO Ultrium 1 Data Cartridges with improved data rates of up to 20 MB/second native data
transfer rate (40 MB/second with 2:1 compression).
Note:
v Ultrium 8 tape drives cannot read or write to Ultrium 6 or earlier tapes.
v Ultrium 7 tape drives cannot read or write to LTO M8, Ultrium 4, Ultrium 3, Ultrium 2, and Ultrium 1
tapes.
v Ultrium 6 tape drives cannot read or write to Ultrium 3, Ultrium 2 and Ultrium 1 tapes.
v Ultrium 5 tape drives cannot read or write to Ultrium 1 or Ultrium 2 tapes.
v Ultrium 4 tape drives cannot read or write to Ultrium 1 tapes.
Product description 11
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