Dell PowerVault TL4000 SCSI Reference Guide - Page 108

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B6h SEND VOLUME TAG A4h SET TIMESTAMP 00h TEST UNIT READY 3Bh WRITE BUFFER 30 seconds 30 seconds 10 seconds 3 minutes 5 Notes: 1. The Initialize Element Status time-out assumes a fully populated unit. 2. The Initialize Element Status With Range time-out assumes a fully populated unit. 3. The Move Medium command assumes a move from one storage element to the data transfer element or vice versa. If the cartridge has not been unloaded by a host command to the tape drive, prior to receiving the Move Medium command, the media changer will issue an Unload command to the tape drive. Therefore, the time-out value needs to be adjusted fro the maximum time a data transfer element takes to rewind and unload the cartridge. 4. The Read Buffer time-out is based on a 16K-data-chunk request. Adjust the time-out value if larger data chunks are requested. 5. The Write Buffer time-out is based on a 16K-data-chunk request. Adjust the time-out value if larger data chunks are sent. 6-2 TL2000 and TL4000 SCSI Reference

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B6h
SEND
VOLUME
TAG
30
seconds
A4h
SET
TIMESTAMP
30
seconds
00h
TEST
UNIT
READY
10
seconds
3Bh
WRITE
BUFFER
3
minutes
5
Notes:
1.
The
Initialize
Element
Status
time-out
assumes
a
fully
populated
unit.
2.
The
Initialize
Element
Status
With
Range
time-out
assumes
a
fully
populated
unit.
3.
The
Move
Medium
command
assumes
a
move
from
one
storage
element
to
the
data
transfer
element
or
vice
versa.
If
the
cartridge
has
not
been
unloaded
by
a
host
command
to
the
tape
drive,
prior
to
receiving
the
Move
Medium
command,
the
media
changer
will
issue
an
Unload
command
to
the
tape
drive.
Therefore,
the
time-out
value
needs
to
be
adjusted
fro
the
maximum
time
a
data
transfer
element
takes
to
rewind
and
unload
the
cartridge.
4.
The
Read
Buffer
time-out
is
based
on
a
16K-data-chunk
request.
Adjust
the
time-out
value
if
larger
data
chunks
are
requested.
5.
The
Write
Buffer
time-out
is
based
on
a
16K-data-chunk
request.
Adjust
the
time-out
value
if
larger
data
chunks
are
sent.
6-2
TL2000
and
TL4000
SCSI
Reference