IEF880I

Explanation
In response to a VARY command, a device has been
placed offline. In the message text: dddd
The device number.
callerid
The caller ID that requested the device be varied offline.
DEVICE IS BOXED
The device was boxed because of a hardware I/O error, or VARY dev,OFFLINE,FORCE
command processing, or VARY CH(x),OFFLINE,FORCE command processing.

When the system boxes a device, these events
occur:
I/O on the device ends.
Any new I/O requests result in permanent I/O errors.

System action
Processing continues.

Operator response
To recover a boxed device, proceed as follows:
In most cases, make the boxed device offline to all sharing systems.
Determine the cause for the boxing, and take any required hardware
repair actions. In the case of a broken device, the device must
be repaired before proceeding to step 3.
 In
the case of a broken control unit, the device should be used only
over the other (good) control unit paths. The broken control unit
may be repaired at a later time. Proceed to step 3.
 In the case of a broken channel,
the device should be used only over other (good) channel paths. The
broken channel may be repaired at a later time. Proceed to step 3.

To bring the device online to allow the system programmer
to verify the data on the boxed device, proceed with one of the following: If the device is offline and boxed (F-BOX), vary the device online
using the following command: VARY dev,ONLINE

If the device is allocated and boxed (A-BOX), determine the users
of the device using the following command: DISPLAY U,,ALLOC,dev,1
 Use
your installation procedures to unallocate users of the device. You
may have to cancel jobs or TSO/E users. If you cannot unallocate all
users of the device (for example, a system task), then proceed to
step 3.c. Wait for the device to complete
offline processing. Then vary the device online, using the following
command:
 VARY dev,ONLINE
 For a boxed,
allocated device, these actions are the preferred method for bringing
the device online, as it allows the device to be taken offline before
it is brought back online. This causes the operating system to perform
VOLSER verification and path validation.
 Proceed to step 4 to verify the data on the volume.

A device that is allocated and boxed, but not offline,
may be brought online, using the following form of the VARY command: VARY dev,ONLINE,UNCOND
 Note: When
this form of the command is used to bring the device online, the operating
system does not verify the VOLSER.

Verify or repair the data, if necessary, or at least
notify the owners of data on the volume. If a potential data integrity
problem exists, the system programmer must check the data before the
device is placed online to any system for starting productive work.

System programmer response
Use the following tools to verify
the data:
LIST VTOC for VTOC
IDCAMS with DIAGNOSE option for VSAM catalogs
IDCAMS with VERIFY option for VSAM data sets

Source
Allocation

Module
IEFHBOFF

Routing code
*,2,3,4,7,8,HRDCPY

Descriptor code
4