[CentOS] CentOS 6.0 and 3ware 9650SE series RAID Performance

Tom Bishop bishoptf at gmail.com
Thu Sep 1 23:49:09 UTC 2011


Keep in mind you really only want to enable the cache if you have a
bbc, otherwise you are risking your data since it can/will cache
writes...just something to keep in mind.

On 9/1/11, Austin Godber <godber at gmail.com> wrote:
> Hi Craig,
>
> Thanks for the suggestion.  I would if I could.  I'd also probably try
> another file system.  Though the good news is, enabling the write cache on
> that array has improved things significantly.  Which, in my case, was:
>
> tw_cli /c2/u0 set cache=on
>
> Now, if only I had the battery backup unit for the card.
>
> Thanks, everyone for their suggestions.  For now I am happy with the
> situation, but I'd be interested to hear the experiences of others.
>
> Austin
>
> On Thu, Sep 1, 2011 at 3:58 PM, Craig White <craig.white at ttiltd.com> wrote:
>
>>
>> On Sep 1, 2011, at 1:41 PM, Austin Godber wrote:
>>
>> > Hello,
>> >
>> > Does anyone have experience using a 3ware 9650SE series raid controller
>> on CentOS 6.0?
>> ----
>> use RAID 10
>>
>> Unless something has changed, RAID 5 is notoriously slow on the 3Ware
>> controllers. Whatever you do will only incrementally speed things up. If
>> performance is desired, RAID 5 is not the way to go.
>>
>> Craig
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>>
>



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