Thanks Dave, that explains everything!

On 5/21/06, David Longo <David.Longo AT health-first DOT org> wrote:

I started a thread on this about 9 months ago.

Short summary:  The "tsm barocde length" on AIX is
for LTO1 and LTO2 tapes only - note comment by that on your lsattr output.

The outout is corect, LTO1/2 wil show up as 6 char if that is what you
were
initially using.  And will stay 6 char, even for new LTO1/2 tapes you
label/initialize.

LTO3 is 8 char.  Best practice going forward is to use 8 char.

There is an IBM Technote# 1217789 on this with lot of details.


David Longo

>>> weiduo.deng AT GMAIL DOT COM 05/21/06 3:20 PM >>>
I have a stranger behavior in my TSM Server ( at least to me).

TSM Server 5.3.3 on AIX 5.3, tape library 3584 with LTO3 drives.

library on AIX, it shows "tsm_barcode_len 6"
root# lsattr -El smc0
alt_pathing     no                 Enable Alternate Pathing
Support                 True
debug_trace     no                 Debug Trace Logging
Enabled                      True
dev_status
N/A                                              False
devtype         03584L32           Device
Type                                      False
location
Location                                         True
lun_id          0x1000000000000    Logical Unit
Number                              True
new_name                           New Logical
Name                                 True
node_name       0x500507623f0d6e01 World Wide Node
Name                             False
primary_device  smc0               Primary Logical
Device                           False
reserve_support yes                Use Reserve/Release on Open and
Close            True
retain_reserve  no                 Retain
Reservation                               False
scsi_id         0x30000            SCSI Target
ID                                   True
trace_logging   no                 Trace Logging
Enabled                            True
*tsm_barcode_len 6*                  TSM Barcode Length for Ultrium
1/Ultrium 2 Media True
ww_name         0x500507630f4c6d01 World Wide Port
Name                             False


Library definition on TSM Server as:
DEFINE LIBRARY 3584 LIBTYPE=SCSI SHARED=YES AUTOLABEL=NO RESETDRIVE=YES


On TSM Server, we have old LTO1 tapes as as below although from Specialist
we see "L1" at the end of it:
A00001
A00002
...........

Yesterday when I used the command to checkin new LTO3 tapes with the
command:
LABEL libv 3584_LIB search=bulk checkin=scratch labels=barcode
The new tapes were labeled as:
B00001L3
B00002L3
..............

How could this happen?

If those LTO1 tapes get expired and reclaimed, will it become 8 character
or
still keeps 6 character?

Thanks in advance.

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