[mythtv-users] Question re: available SATA ports and linux software RAID

[John Drescher]

On Thu, Apr 7, 2011 at 11:59 PM, Bobby Gill <brownitus at gmail.com> wrote:
>> At work I have these cards in JBOD mode so they show up as individual
>> disks. Then I use software linux raid 6 with the individual drives.
>>
>> BTW, These cards require 2 special cables SFF-8087 to 4 x 7pin SATA
>> forward cables.
>>
>>
>> http://www.newegg.com/Product/Product.aspx?Item=N82E16812228057&cm_re=sas_cable_8087-_-12-228-057-_-Product
>>
>>
>> http://www.newegg.com/Product/Product.aspx?Item=N82E16812228056&cm_re=sas_cable_8087-_-12-228-056-_-Product
>>
>> On eBay you can get these for less than $15 for 3ware ones. Here is a
>> Google search for these.
>>
>>
>> http://www.google.com/products/catalog?hl=en&client=firefox-a&hs=huy&rls=org.mozilla:en-US:official&q=3ware+sas+8087&bav=on.2,or.r_gc.r_pw.&um=1&ie=UTF-8&cid=17016499459874477598&sa=X&ei=7z-eTfCdHOXo0gHnx8HaBA&ved=0CCMQ8wIwAg#
>>
>> John
>>
>
> Thanks! So basically in BIOS you set it to JBOD and then go about the array
> in linux?
>
If you do not add them to an array in the firmware they are
automatically in JBOD mode and show up as normal sata devices with the
fusion mpt sas driver from the kernel.
>
> And are those the same cables just measuring differently at 18/36 or do I
> need one of each? Look the same to me, but just checking.
>
The difference is just the length. At work I mixed it up and got a few
36 inch and a few 18 inch SAS break out cables.

John