IBM RS/6000 44P Series 270, Руководство пользователя

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12/24 GB 4 mm Tape Cartridge Types
There are different types of 12/24 GB 4 mm tape cartridges that you can use for the
following purposes:
Type Purpose
Test Tape Cartridge Checks the operation of the drive or to run
diagnostics. Do not use it to save programs or
data. This cartridge, which is specially labeled,
is included with the 12/24GB 4mm Tape Drive.
Data Tape Cartridge Saves your programs or data. This cartridge is
included with the 12/24GB 4mm Tape Drive.
Cleaning Tape Cartridge Cleans the 12/24GB 4mm Tape Drive. See
“Cleaning the Tape Path on the 12/24GB 4mm
Tape Drive” on page 37. This cartridge is
included with the 12/24GB 4mm Tape Drive.
Tape Cartridge Compatibility
The tape drive is compatible with existing 12/24 GB 4 mm tape subsystems that are
designed to operate with Digital Data Storage approved media (DDS-1, DDS||||, DDS-2,
or DDS-3), which meet the following European Computer Manufacturers Association
(ECMA) standards:
v
ECMA–139 “3.81 Wide Magnetic Tape Cartridge for Information Interchange” –
Helical Scan Recording – DDS Format.
v
ECMA–139 “3.81 Wide Magnetic Tape Cartridge for Information Interchange” –
Helical Scan Recording – DDS–2 Format.
v
ECMA–139 “3.81 Wide Magnetic Tape Cartridge for Information Interchange” –
Helical Scan Recording – DDS–3 Format.
4 mm Tape Write Density Setting
When reading a tape, the drive automatically determines which format is written on the
tape.
When writing to a tape, use SMIT (System Management Interface Tool) to change the
density setting of the tape drive to correspond to the type of media installed. Refer to
the following table for information about the specific density setting:
Density Settings for 4 mm Media
Media Type Device Compatibility SMIT Density Setting
DDS1 Read Only N/A
DDS|||| Read / Write (2.0 GB Mode Only) 19
DDS2 Read / Write (4.0 GB Mode Only) 36
DDS3 Read / Write (12.0 GB Mode Only) 37
Chapter 2. Using the 44P Series Model 170
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