Internal Magnetic Media 349
Internal Magnetic Media
Alternate Installation Device support allows you to perform installation and recovery
procedures using a combination of devices. Prior to V4R1, these types of activities could only
be performed using devices attached to the first system bus. The first system bus connects to
the service processor IOP. Typically this is where the optical device or tape devices used for
installations are attached. On OS/400 V4 systems, you can use a combination of devices that
are attached on the first system bus and on additional buses. The alternate installation device
is not attached to the first system bus.
On the Model 270 and Model 8xx V4R5 systems, the Alternate IPL device is attached to an
I/O adapter that is controlled by the base IOP in the system.
If you use the alternate installation function, the system uses existing support (a device on
the first system bus) to install or recover enough of the Licensed Internal Code required to
perform an IPL with an IPL-type D. When using the alternate installation device support, the
system continues the operation using media in the alternate installation device. This function
supports installation and recovery from tape media, such as SAVSYS tapes or distribution
tapes which you created, that contain Licensed Internal Code and may contain the operating
system, licensed programs, and data.
See the
Backup and Recovery Manual
, SC41-5304, for more information.
Tape Unit Descriptions
For general tape read and write compatibility, refer to the first table that appears in “Tape
Units” on page 346.
#1349 1.2 GB ¼-Inch Cartridge Tape Unit Conversion Kit
Provides the hardware for migrating a #6368 1.2 GB ¼-inch Cartridge Tape Unit to 7xx
systems.
#1350 2.5 GB ¼-Inch Cartridge Tape Unit Conversion Kit
Provides the hardware for migrating a #6369 and #6380 2.5 GB ¼-inch Cartridge Tape Unit to
7xx systems.
#1355 13 GB ¼-Inch Cartridge Tape Unit Conversion Kit
Provides the hardware for migrating a #6385 13 GB ¼-inch Cartridge Tape Unit to 7xx
systems.
#1360 7 GB 8mm Cartridge Tape Unit Conversion Kit
Provides the hardware for migrating a #6390 7 GB 8mm Cartridge Tape Unit to 7xx systems.
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