Dell PowerVault TL4000 SCSI Reference Guide - Page 107

Command, Timeouts

Page 107 highlights

Chapter 6. Command Timeouts Next table will list the library media changer commands with the recommended maximum time-out values. Note: If the library is working in a multi host environment, the time-out values should be adjusted for the worst case time-out value from a pending motion command from another host. Op Code 07h 37h 12h 4Ch 4Dh 15h 55h 1Ah 5Ah A5h 1Bh 5Eh 5Fh 2Bh 1Eh 3Ch B8h 17h 57h 02h 16h 56h A3h A3h B5h 1Dh SCSI Command INITIALIZE ELEMENT STATUS INITIALIZE ELEMENT STATUS WITH RANGE with FAST bit set ( ignore bar code labels ) INITIALIZE ELEMENT STATUS WITH RANGE with FAST bit cleared ( scan bar code labels ) INQUIRY LOG SELECT LOG SENSE MODE SELECT 6 MODE SELECT 10 MODE SENSE 6 MODE SENSE 10 MOVE MEDIUM (slot to slot) MOVE MEDIUM (slot to drive) MOVE MEDIUM (implicit drive to slot) ( the media changer initiates the unload of the cartridge from the drive. The MODE MEDIUM command timeout has been adjusted to account for maximum unload time) MOVE MEDIUM (explicit drive to slot) ( the host has issued an UNLOAD command to the tape drive prior to issuing the MOVE MEDIUM command) OPEN/CLOSE IMPORT/EXPORT ELEMENT PERSISTENT RESERVE IN PESISTENT RESERVE OUT POSITION TO ELEMENT PREVENT/ALLOW MEDIUM REMOVAL READ BUFFER READ ELEMENT STATUS RELEASE 6 RELEASE 10 REQUEST SENSE RESERVE 6 RESERVE 10 REPORT TIMESTAMP REPORT SUPPORTED OPERATION CODES REQUEST VOLUME ELEMENT ADDRESS SEND DIAGNOSTICS Command Timeout 11 minutes 11 minutes 11 minutes 10 seconds 30 seconds 30 seconds 30 seconds 30 seconds 30 seconds 30 seconds 12 minutes 25 minutes 25 minutes 13 minutes 10 minutes 30 seconds 30 seconds TBD 30 seconds 30 seconds 30 seconds 30 seconds 30 seconds 10 seconds 30 seconds 30 seconds 30 seconds 30 seconds 30 seconds 30 seconds Notes 1 2 2 3 4 6-1

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Chapter
6.
Command
Timeouts
Next
table
will
list
the
library
media
changer
commands
with
the
recommended
maximum
time-out
values.
Note:
If
the
library
is
working
in
a
multi
host
environment,
the
time-out
values
should
be
adjusted
for
the
worst
case
time-out
value
from
a
pending
motion
command
from
another
host.
Op
Code
SCSI
Command
Command
Timeout
Notes
07h
INITIALIZE
ELEMENT
STATUS
11
minutes
1
37h
INITIALIZE
ELEMENT
STATUS
WITH
RANGE
with
FAST
bit
set
(
ignore
bar
code
labels
)
11
minutes
2
INITIALIZE
ELEMENT
STATUS
WITH
RANGE
with
FAST
bit
cleared
(
scan
bar
code
labels
)
11
minutes
2
12h
INQUIRY
10
seconds
4Ch
LOG
SELECT
30
seconds
4Dh
LOG
SENSE
30
seconds
15h
MODE
SELECT
6
30
seconds
55h
MODE
SELECT
10
30
seconds
1Ah
MODE
SENSE
6
30
seconds
5Ah
MODE
SENSE
10
30
seconds
A5h
MOVE
MEDIUM
(slot
to
slot)
12
minutes
MOVE
MEDIUM
(slot
to
drive)
25
minutes
MOVE
MEDIUM
(implicit
drive
to
slot)
(
the
media
changer
initiates
the
unload
of
the
cartridge
from
the
drive.
The
MODE
MEDIUM
command
timeout
has
been
adjusted
to
account
for
maximum
unload
time)
25
minutes
3
MOVE
MEDIUM
(explicit
drive
to
slot)
(
the
host
has
issued
an
UNLOAD
command
to
the
tape
drive
prior
to
issuing
the
MOVE
MEDIUM
command)
13
minutes
1Bh
OPEN/CLOSE
IMPORT/EXPORT
ELEMENT
10
minutes
5Eh
PERSISTENT
RESERVE
IN
30
seconds
5Fh
PESISTENT
RESERVE
OUT
30
seconds
2Bh
POSITION
TO
ELEMENT
TBD
1Eh
PREVENT/ALLOW
MEDIUM
REMOVAL
30
seconds
3Ch
READ
BUFFER
30
seconds
4
B8h
READ
ELEMENT
STATUS
30
seconds
17h
RELEASE
6
30
seconds
57h
RELEASE
10
30
seconds
02h
REQUEST
SENSE
10
seconds
16h
RESERVE
6
30
seconds
56h
RESERVE
10
30
seconds
A3h
REPORT
TIMESTAMP
30
seconds
A3h
REPORT
SUPPORTED
OPERATION
CODES
30
seconds
B5h
REQUEST
VOLUME
ELEMENT
ADDRESS
30
seconds
1Dh
SEND
DIAGNOSTICS
30
seconds
6-1