Tape Cartridge Compatibility; Setting The Write-Protect Tab On 4 Mm Tape Cartridges; Environmental Considerations For 4 Mm Data Cartridges - IBM 7013 J Series Operator's Manual

Tape Cartridge Compatibility

The 4 mm Tape Drive is compatible with existing 4mm tape subsystems that are designed to
operate with Digital Data Storage approved media, which meet the following standards:
For DDS||||
– American National Standard (ANSI) standard, X3.203-191, Helical-scan Digital
Computer Tape Cartridge, 3.81mm .
– European Computer Manufacturers Association (EMCA) standard, EMCA-150,
3.81mm Wide Magnetic Tape Cartridge and DDS|||| format .
For DDS2
– European Computer Manufacturers Association (EMCA) standard, EMCA/TC17/93/20,
3.81mm Wide Magnetic Tape Cartridge for Information Interchange Helical Scan
Recording, DDS2 format .
You cannot change the density setting of the drive, because the device reconfigures itself
automatically, depending on the media type installed, as follows:
Media Type
DDS
DDS||||
DDS2
Non-DDS

Setting the Write-Protect Tab on 4 mm Tape Cartridges

The window on the tape cartridge controls write-protection. When the write-protect tab of a
tape cartridge is set (window open), information can be read from the tape, but cannot be
written to it. When the write-protect tab of a tape cartridge is not set (window closed),
information can be both written to and read from the tape. Trying to write to a 4 mm data
cartridge with the window open causes an error.
Write-Protect Tab Not Set
Window
Closed
Note: The write-protect setting for the 4 mm tape is the opposite of the setting for the 8 mm
tape.

Environmental Considerations for 4 mm Data Cartridges

Information in this section describes operating and storage conditions including temperature,
relative humidity, and maximum wet bulb data.
Attention: The manufacturer has specified a set of temperature and humidity ranges in
which the 4 mm data cartridge can operate with ease. Only regular cleaning procedures, as
described in "Cleaning the Tape Path on the 4.0GB 4 mm Tape Drive" on page 2-32, are
required when operating the cartridge within this range. The risk of possible data loss is
2-26
Operator Guide
Device Configuration
Read-only
Read/write in 2.0GB mode only.
Read in either density; write in 4.0GB mode only.
Not supported. The cartridge will eject.
Write-Protect Tab Set
Window
Opened