Determining whether the data movement was lan-free – IBM TIVOLI SC32-0129-00 User Manual
Page 59
Determining
Whether
the
Data
Movement
was
LAN-free
Use
the
following
guidelines
to
help
determine
whether
the
data
is
moving
on
the
LAN-free
path:
v
Monitor
the
QUERY
SESSION
output
against
the
node
that
is
running
the
LAN-free
backup.
Review
the
bytes
sent
and
bytes
received.
You
can
perform
this
action
by
using
a
Tivoli
Storage
Manager
administrative
command-line
client
to
login
to
the
Tivoli
Storage
Manager
server
and
storage
agent
to
verify
that
the
proper
sessions
have
been
established.
When
LAN-free
data
movement
is
occurring,
a
QUERY
SESSION
on
the
storage
agent
should
show
bytes
received
(displayed
as
bytes
recvd)
for
the
node
increasing
to
the
total
amount
of
data
being
backed
up.
The
QUERY
SESSION
on
the
Tivoli
Storage
Manager
server
should
show
a
very
small
number
of
bytes
of
metadata
received
for
the
same
node.
If
the
node’s
session
exhibits
this
behavior,
the
data
movement
is
LAN-free.
Note:
During
a
failover
where
the
storage
agent
is
sending
data
directly
to
the
server
by
proxy
because
it
cannot
store
the
data
directly,
the
QUERY
SESSION
statistics
on
the
server
will
show
a
much
higher
byte
count.
v
Issue
either
of
the
following
QUERY
ACTLOG
commands
on
the
server
to
which
the
client
is
connected:
query
actlog
search=storage_agent_name
msgno=8337
query
actlog
search=storage_agent_name
If
the
query
finds
entries
in
the
activity
log
that
relate
to
the
storage
agent,
the
client
is
using
LAN-free
data
transfer.
Chapter
4.
Installing
and
Configuring
External
Library
Environments
41