Few things to consider 

1) Are the HBA's for the LTO5 Drives dedicated or do they have other
devices. 

2) How many LTO drives per HBA? 

3) Speed of Fibre 2/4/8Gb

....

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Gary Bowers
Sent: Monday, May 02, 2011 9:39 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] LTO5 performance

Just a quick poll of what people are seeing for LTO-5 performance.  Is
it anywhere close to the rated 140 MB/s native, or much lower?  I ask,
because I have a customer that is only getting about 40-50 MB/s from HP
LTO5 drives in a Quantum library.  This number seems really low to me,
but before I jump to making recommendations, I would like to have some
real world numbers to go off of.  You'd think Google would find some,
but my searches turned up nill.

As an aside, has anyone had performance problems with Quantum libraries
and their built-in Fibre Switches?

OS is AIX 6, having the same performance from both TSM server, AIX and
Solaris 10 LanFree.

Thanks for sharing :)

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