Dell PowerVault TL1000, User Manual

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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 TL1000 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 4, Ultrium 5, Ultrium 6, Ultrium 7, and Ultrium 8 Tape
Drives use a technique that is 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 4, Ultrium 5, Ultrium 6, Ultrium 7, and Ultrium 8 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 4, Ultrium 5, Ultrium 6, Ultrium 7, and Ultrium 8 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.
Media
The TL1000 Tape Autoloader uses Ultrium tape cartridges that provide up to 12000 GB native capacity
(up to 30000 GB with 2.5:1 hardware data compression) for Ultrium 8 tape drives, 6000-GB native
capacity (up to 15000 GB with 2.5:1 hardware data compression) for Ultrium 7 tape drives, 2500-GB
native capacity (up to 6250 GB with 2.5:1 hardware data compression) for Ultrium 6 tape drives, 1500-GB
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Figure 6. Ultrium half-height tape drive
Product description
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