Re: Supermicro SAS controller

[Ramon Hofer <ramonhofer@bluewin.ch>]

On Tue, 01 May 2012 15:43:13 -0500, Stan Hoeppner wrote:

> On 5/1/2012 12:37 PM, Ramon Hofer wrote:
> 
>> I have the RPC-4220 case with 20 howswap slots.
> 
> You should have mentioned this sooner, as there is a better solution
> than buying 3 of the 9211-8i, which is $239*3= $717.  And you end up
> with one SFF8087 port wasted.
> 
> Instead, get a 24 port Intel 6Gb SAS expander:
> http://www.provantage.com/intel-res2sv240~7ITSP0V8.htm $238.24
> 
> and the LSI 9240-4i, same LSISAS2008 chip as the 9211-8i:
> http://www.newegg.com/Product/Product.aspx?Item=N82E16816118129 $189.99
> 
> Total:  $429
> 
> W/4 extra SFF8087 cables (assuming you already have 2):
> http://www.newegg.com/Product/Product.aspx?Item=N82E16816116093 $60
> 
> Total:  $489
> 
> This solution connects all 20 drives on all 5 backplanes to the HBA, and
> will give you ~1.5GB/s read throughput with 20 7.2k RPM drives using md
> RAID 5/6, and ~800MB/s with hardware or md RAID10.
> 
> You connect the SFF8087 of the LSI card to port 0 of the SAS exapander.
>  You then connect the remaining 5 ports to the 5 SFF8087 ports on the 5
> backplanes.

Thanks alot for the suggestions. I have found a shop where I live and 
will order them tomorrow. Do you have experience with these cards?


Best regards
Ramon