You are not describing on which platform.

I am not sure is this QLogic specific or owners of Emulex adapters were 
hurt too. What I can say is that IBM are shipping branded QLogic adapters 
(QLA2200F, QLA2300F, or QLA2340F) for Netfinity/xSeries systems. As TSM is 
getting bundled with IBM hardware very often, the issue with MaximumSGList 
on IBM Wintel platform is well known.
For RS6000/pSeries IBM is using Emulex adapters (LP7000, LP9002, or 
LP9802) and in AIX the setting is called "max_xfer_size" with value 
measured in bytes. By default the value is 0x100000 (1 MB) and is 
sufficient for disk operations. For LTO tapes is must be set to 0x1000000 
(16 MB).
Till now I have not seen description the equivalent setting for other 
platforms (Solaris, HP-UX, Linux) but am eager to learn it.

Zlatko Krastev
IT Consultant






Markus Veit <markus.veit AT SCALEON DOT DE>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
30.10.2003 10:41
Please respond to "ADSM: Dist Stor Manager"

 
        To:     ADSM-L AT VM.MARIST DOT EDU
        cc: 
        Subject:        Antwort: Re: maximumsglist - lanfree


Hi,
just an info,
when we ran some LAN free backup/restore tests using TSM 5.2.1.1 server 
and STA
5.2.1.1 it was not necessarry to
set the maximumsglist at all using Emulex LP9002 HBA's. Backup and restore
operations worked fine.
We used LTO2 drives and LTO1 tape though.

Mit freundlichen Grüßen / Best Regards

Markus Veit



 
 
 
                                                An: ADSM-L AT VM.MARIST DOT EDU
                                                Kopie: 
                                                Thema:   Re: maximumsglist 
- lanfree
 
              owner-adsm-l AT VM.MARIST DOT EDU 
              Received :  30.10.2003 
              09:32 
              Bitte antworten an "ADSM: 
              Dist Stor Manager" 
 




You must set this option higher than 0x41 (I prefer 0xFF) on *any* machine
accessing tape over SAN - be it TSM server, TSM Storage Agent, or any
other product.
Afterwards you must perform the backup *again* - some times with low
maximumsglist setting the data is reported to be written but is not
completely. Thus your backup might be not restoreable.

Zlatko Krastev
IT Consultant






i love tsm <ilovetsm AT HOTMAIL DOT COM>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
30.10.2003 09:21
Please respond to "ADSM: Dist Stor Manager"


        To:     ADSM-L AT VM.MARIST DOT EDU
        cc:
        Subject:        maximumsglist - lanfree


Hi

Well the quest for lan free backups continues....

I got past my initial problems by upgrading storage agent to 5.1.5.4 (same
level as server)

Yesterday I managed to run an image backup lan free, 150Gb in 1hr 15
minutes
so was quite happy with that.  However when I went to restore it 5 minutes
later it failed and the server actlog gave me

10/29/2003 16:39:39   ANR8939E The adapter for tape drive DRIVE2WWPK
(mt1.0.0.5)
                                 cannot handle  the block size needed to
use
the volume.

I then tried another image backup and it failed with the same error.
During
the time of the image backup working then stopping working nothing had
changed.

I believe the above error is to do with the registry entry for
maximumsglist.  On the storage agent client I have had maximumsglist set
to
FF for a while.

My question is do I need to set the same registry key on the TSM Server
itself?
If not then what else can be causing this

TIA

_________________________________________________________________
It's fast, it's easy and it's free. Get MSN Messenger today!
http://www.msn.co.uk/messenger