Hi Bill

Just check out the readme-files that comes with the patch/maintenance 
package. It clearly states that Tivoli recommends connecting the tape 
drives on separate adapters from the disk.

>From the readme-file of the TSM StorageAgent for SUN v5.2.1.3 
(ftp://ftp.software.ibm.com/storage/tivoli-storage-management/patches/storage-agent/5.2.1.3/TSMSTA5213_SUN.README):

*********************************************************************************
* Host Bus Adapter recommendation      *
*********************************************************************************

It is highly recommended that Tape Drives and Tape Libraries be connected 
to the 
system on their own host bus adapter and not share with other devices 
types (DISK, 
CDROM, etc.).

Best Regards

Daniel Sparrman
-----------------------------------
Daniel Sparrman
Exist i Stockholm AB
Propellervägen 6B
183 62 TÄBY
Växel: 08 - 754 98 00
Mobil: 070 - 399 27 51



Bill Boyer <bill.boyer AT VERIZON DOT NET> 
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
2004-04-29 13:20
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"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>


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Subject
Disk and Tape access over the same fibre adapter






Just got a new client that wants to do some LANfree backups, but they 
don't
believe me when I tell them that the recommended way is to have a separate
HBA for disk and tape. They don't think that mixing the 2 will be a
performance issue. I remember a couple years ago this was an issue of data
corruption, but that has been addresses.

Can someone point me to any whitepapers or documentation explaining why 
they
should spend a couple more $'s and get an additional adapter for those
server they want to do LANfree backups on?

TIA,

Bill Boyer
"Experience is a comb that nature gives us after we go bald." - ??