Extremely slow write speeds to disk : FreeBSD 7.1 and Dell SAS 6/iRAdapter

Morten P.D. Stevens mstevens at win-professional.com
Tue Feb 10 09:00:28 CST 2009

Hi Bradley,


FreeBSD is not supported with Dell hardware.

The Dell SAS 6/iR Controller should be a LSI SAS 1068e Controller.


Here are the newest available drivers for the LSI_SAS_1068e Controller




There are no drivers for BSD. 


Best Regards,




From: linux-poweredge-bounces at dell.com
[mailto:linux-poweredge-bounces at dell.com] On Behalf Of Bradley Radjoo
Sent: Tuesday, February 10, 2009 3:47 PM
To: linux-poweredge at dell.com
Subject: Extremely slow write speeds to disk : FreeBSD 7.1 and Dell SAS
Importance: High



Please can you assist. 

I have attempted most of the popular BSD Variants such as NetBSD, Open
BSD, FreeBSD... 
The only distrubution that seems to work on the is Dell SAS 6/iR Adapter
is FreeBSD 7.1 
Firmware version & date : 9/29/2008 

But the issue is that writing to disk is extremely slow...i.e. 14Mb per

If I install any other linux distribution, like CentOS, write speek is
the way it should be..it averages around 190Mb+ per second

I was hoping if it were at all possible for you to assist me in with a
later RAID Controller Driver for the SAS 6/iR Adapter

This is on a Dell PowerEdge R300 Server. 
BIOS Version 1.3.0 
Running Raid 1 


Kind Regards, 


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