Detection
Scenarios
1.
The
loss
of
communications
between
the
library
and
the
UDS
2.
The
loss
of
communications
between
the
UDS
controller
board
and
the
drive
brick.
Root
Causes
1.
Various
hardware
problems
inside
the
sled.
2.
Drive
brick
firmware
bug
3.
Drive
sled
firmware
bug
4.
Library
communication
firmware
bug
5.
DSIB
hardware
problem
6.
Loss
of
power
to
sled
(DSIB
48
V
fuse)
Possible
CRU
Replacements
Tape
Drive
Resolution
v
Update
drive
firmware
(see
v
Update
library
firmware
(see
v
If
the
problem
still
exists:
–
–
T071:
Power
Supply
not
present
Description
The
library
can
no
longer
detect
the
presence
of
a
power
supply
that
was
previously
physically
installed
and
logically
added
to
the
system.
Detection
Scenarios
Regular
polling
between
LCB
and
power
supply
checks
for
presence
of
the
power
supply.
Root
Causes
1.
Power
Supply
has
been
physically
removed
after
being
added
to
a
powered
on
system.
2.
Hardware
failure
inside
supply
3.
Hardware
failure
in
library
side
connector
of
other
electronics.
Possible
CRU
Replacements
Power
Supply
Resolution
Perform
T072:
The
system
has
reported
an
unmanaged
fault
Description
Library
firmware
has
reported
a
problem
that
is
not
associated
with
a
specific
ticket
and
corresponding
diagnostic
resolution.
This
problem
cannot
be
resolved
without
escalation
to
tech
support
and
engineering.
Resolution
Perform
Chapter
10.
Service
Action
Tickets
(Txxx)
and
Diagnostic
Resolutions
(DRxxx)
10-27
Summary of Contents for System Storage TS3310
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