IBM B-Series, Maintenance Information

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Checking the SCSI Attachment in an AS/400 Environment
If you are having problems with your connection to an AS/400, review the following Hints for possible
causes, then continue with the SCSI checkout:
AS/400 Hints:
PTFs are required prior to attaching a 3570 Magstar MP Tape Subsystem to an AS/400 system.
The PTFs for all supported AS/400 releases are listed in INFO APAR II10363. This info APAR
contains the most current PTF information for all supported releases and important information
concerning the attachment of the 3570 MAGSTAR MP Tape Subsystem to the AS/400.
After installing the appropriate PTFs, a SAVSYS must be done to ensure the new IOP code is
available during a system recovery.
The FC 2729 adapter shares a Combined Function IOP with the communications subsystems.
Resetting the 2729 will disrupt the associated communications adapters.
Whenever possible, create the Magstar MP configuration by performing an IPL of the I/O processor
after attaching it to the Magstar MP. Ensure that the AS/400 system value for Autoconfigure
Devices is set to on. The I/O processor may be IPLed by varying off and varying on with reset or
by using the System Service Tools (STRSST). Refer to the
Application System/400 Service
Functions User's Guide for information about the System Service Tools.
For Alt-IPL (“D” IPL) use Automatic or Manual Mode. Random mode can be used after XPF has
been installed and the device configurations have been created or restored. When using
BRMS/400, follow the recovery report.
When upgrading or installing a new release of OS/400 the 3570 must be in Automatic or Manual
mode.
Base and Split configurations are supported. When switching between Base and Split configuration
the I/O processor must be reloaded. To reload the I/O processor, vary off and vary on with reset or
use STRSST to IPL the I/O processor.
In Base configuration, each tape drive must be set to a different SCSI address.
For Operating System/400 V3R1 and V3R2:
The Magstar MP will be configured as TAPxx, where xx is number of the next tape device.
A library device must be created to operate in Random mode.
The VFYTAP command must be run in MANUAL mode or AUTOMATIC mode. Inconsistant
results happens when run in Random mode.
For Operating System/400 V3R6 and V3R7:
The Magstar MP configuration will consist of both a tape device (TAPxx), and a library device
(TAPLIByy for V3R6; TAPMLByy for V3R7), where xx is number of the next tape device and yy is
number of the next library device.
The system will configure with TAPLIByy or TAPMLByy as varied on.
– To run with TAPLIByy or TAPMLByy library configurations, Magstar MP must be in Random
mode.
– When not running in library mode, vary TAPLIByy or TAPMLByy off and vary TAPxx on.
– Never have both TAPLIByy or TAPMLByy and TAPxx varied on at the same time.
Run the VFYTAP command in MANUAL mode or AUTOMATIC mode.
BRMS/400 Requirements
The Magstar MP tape cartridges must be initialized prior to using them with BRMS. Use the
INZTAP command with the Magstar MP in Automatic mode.
For OS/400 releases V3R1 and V3R2, the library device must be placed in “hold” status when
switching from Random mode to Automatic or Manual mode. Use the WRKDEVBRM command to
hold/release the library device.
PROC
Common Procedures
PROC-73