Network Time Protocol (Ntp); Ultrium Tape Drives; Speed Matching; Channel Calibration - IBM TS2900 Setup, Operator, And Service Manual

Network Time Protocol (NTP)

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 using them to adjust the client's clock.

Ultrium Tape Drives

The TS2900 Tape Autoloader supports the Ultrium 3 (3572-3SH) and Ultrium 4
(3572-S4H) Half-High Tape Drives.
The Ultrium 3 and Ultrium 4 Half-High Tape Drives support the Serial Attached SCSI
(SAS) interface. They both have one Mini-SAS (SFF-8088) connector.
Figure 1-6. Ultrium Half-High Tape Drive

Speed Matching

To improve system performance, the Ultrium 3 and Ultrium 4 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 Ultrium 4 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 Ultrium 4 Tape Drives feature a power management function that
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.
Chapter 1. Product Description
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