Network Time Protocol
NTP is an Internet standard protocol that assures accurate synchronization of computer clock times in a
network of computers. Running as a continuous background client program on a computer, NTP sends
periodic time requests to a server, obtaining server time stamps, and with them to adjust the client’s
clock.
Ultrium tape drives
The TS2900 Tape Autoloader supports the Ultrium 3 (3572-S3H) and later, half height tape drives.
The Ultrium 3 and later, half height tape drives support the Serial Attached SCSI (SAS) interface. They
have one Mini-SAS (SFF-8088) connector.
Speed matching
To improve system performance, the Ultrium 3 and later Tape Drives use a technique that is called speed
matching. Speed Matching dynamically adjusts the 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 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.
Figure 6. Ultrium half height tape drive
8 IBM TS2900 Tape Autoloader: Setup, Operator, and Service Guide Machine Type 3572
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