Chapter 9. External storage, SANs, QIC, and VXA-2 formats for IBM iSeries and AS/400e servers 369
If you use this function, the system uses existing support (a device on the first system bus) to
install or recover enough of the Licensed Internal Code (LIC) required to perform an IPL with
IPL-type D. Then, using the new alternate installation device support, the system continues
the operation using media in the alternate installation device. This new function supports
installation and recovery from tape media, such as SAVSYS tapes or distribution tapes that
you created, which contains LIC and can contain the operating system, licensed programs,
and data.
From OS/400 V4R5 onward, the #0208 No Alternate Install Device Use Required specify
code can be used to force an external tape input/output adapter (IOA) into the first
Multi-adapter Bridge on Model 270, 820, 830, 840, SB2, and SB3 servers. This eliminates the
need to use the alternate installation device function to perform a D-mode IPL. Forcing the
external tape IOA on the first Multi-adapter Bridge can result in a higher cost system
configuration due to the need for additional PCI IOPs. If the external tape IOA cannot be
placed in the first Multi-adapter Bridge due to other system constraints, the order fails
validation.
In the past, a #55xx specify feature code has appeared on iSeries configurations indicating
which tape device should be the ALT-IPL device. Beginning with the January 2003, the #55xx
can no longer be configured. A new feature can be chosen to indicate which external tape
IOA should be placed on the first Multi-adapter Bridge, if required. These new features are:
#0705 Forced #2749 Placement
#0707 Forced #2768 Placement
#0708 Forced #5702/#5712 Placement
See Backup and Recovery, SC41-5304, for more information.
Note: The #2765 PCI Fibre Channel Tape Controller and #5704 PCI-X Fibre Channel
Tape Controller do not support the alternate IPL device function. A D-mode IPL is required
using CD-ROM, DVD-ROM, or another ALT-IPL tape device. Then select a #2765 or
#5704 to complete the installation or recovery process.
