Channel calibration
System performance is optimized by channel calibration.
System performance is further optimized by a feature that is called channel calibration, in which the drive
automatically customizes each read/write data channel to compensate for variations in such things as the
recording channel 's transfer function, the media, and characteristics of the drive head.
Data cartridge capacity scaling
Capacity scaling enables faster random access to data.
The SET CAPACITY SCSI command enables a customer to capacity scale a data cartridge to enable
faster random access. As an example, a customer can capacity scale a data cartridge to 20% of its normal
length that improves the average access time by almost a factor of 5. However, it also reduces the native
capacity of the tape to 80 GB 160 GB 300 GB 500 GB 1.2 TB.
Power management
The LTO tape drives feature a power management function. This function controls the drive's electronics
so that part of the electronics completely turns OFF when circuit functions are not needed for the drive's
operation.
Encryption
The LTO tape drive supports host Application Managed Encryption (AME), with T10 encryption methods.
Data encryption is supported by LTO Ultrium 4 and later data cartridges only.
The encryption-enabled drive contains the necessary hardware and îš´rmware to encrypt and decrypt
host tape application data. Encryption policy and encryption keys are provided by the host application. A
drive digital certiîš´cate is installed at manufacturing time. Each drive receives a unique serial number and
certiîš´cate. The T10 Application can validate each drive instance by checking the drive's digital certiîš´cate.
For details, see the IBM Tape Device Drivers Encryption Support documentation, and the IBM LTO Ultrium
Tape Drive SCSI Reference documentation.
Supported tape cartridges
Tape media is available in the following types:
• Data cartridge
• WORM (Write Once, Read Many) cartridge
• Cleaning cartridge
All generations contain 1/2-inch, dual-coat, magnetic tape.
Table 15. Media drive compatibility
Tape
Cartridg
e
LTO 9
Drive
LTO 8
Drive
LTO 7
Drive
LTO 6
Drive
LTO 5
Drive
LTO 4
Drive
LTO 3
Drive
LTO 2
Drive
LTO 1
Drive
Ultrium
9
Read/
write
Ultrium
8
Read/
write
Read/
write
Ultrium
M8
Read/
write
IBM Conîš´dential
20IBM TS4300 Tape Library Machine Type 3555: User's Guide
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