My rule of thumb is 1 LTO-3/4 needs 1ghz of cpu.  That should take care of 
drive and the overhead
of a 1ghz nic card.



----- Original Message ----
From: Joel Fisher <jfisher AT WFUBMC DOT EDU>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Sent: Monday, October 12, 2009 8:11:42 PM
Subject: [Networker] Sun Hardware

Hey Guys,



Can anyone give me an idea of how many lto-4 drives a T2000 or T5220
could keep streaming.



Assumptions.

Data is landed on disk(adv_file) then cloned to LTO-4 drives during the
day.

The disk is not a bottle neck.

Plenty of hbas so connectivity is not a bottleneck



Could I have say 3 landing areas and then stream to 3 LTO-4
simultaneously.  Somewhere between 120-240MB/s?



Any real world users of something like this.



I know these servers can seriously move some data, I guess my main
concern, is can they move a single stream fast enough for LTO-4 or
LTO-5?  Since any individual thread is limited to the 1.2-1.6Mhz.



Any advice here would be appreciated.



Thanks!



Joel 


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