Hello Marcelo,

Thank you for the suggestion.  I had not yet tried activating the cache since I was unsure whether that was a good idea or not.

Since you have experience with this card, do you have any recommendations for what I should expect or avoid?  Have you used EXT3 with success or are you using XFS or something else?

Austin

On Thu, Sep 1, 2011 at 2:05 PM, Marcelo Beckmann <marcelo.beckmann@webers.com.br> wrote:
Em 01-09-2011 17:41, Austin Godber escreveu:
>
> ===================  tw_cli info c2  ============================
>
> Unit  UnitType  Status         %RCmpl  %V/I/M  Stripe  Size(GB)  Cache
>  AVrfy
> ------------------------------------------------------------------------------
> u0    RAID-5    OK             -       -       64K     6519.19   OFF
>  OFF

I have the same controller on Centos 5.

Did you try to active Cache on 3ware?

[17:56:04 root@backup ~]# lspci | grep 3ware
01:00.0 RAID bus controller: 3ware Inc 9650SE SATA-II RAID PCIe (rev 01)
[17:56:11 root@backup ~]# tw_cli /c4 show

Unit  UnitType  Status         %RCmpl  %V/I/M  Stripe  Size(GB)  Cache
AVrfy
------------------------------------------------------------------------------
u0    RAID-5    OK             -       -       64K     5587.9    RiW
ON


In the past I had a scenario where I started with Cache OFF and had a
poor performance, specially for write. After set Cache RiW I got better
performance.

I didn't test that controller on CentOS 6, but is good to know if there
is some problem, because my company sells equipment with that controller.


Best regards,

--
Marcelo Beckmann
Suporte Corporativo - suporte@webers.com.br
Webers Tecnologia - http://www.webers.com.br
Curitiba       (PR) (41) 3094-6600
Rio de Janeiro (RJ) (21) 4007-1207
São Paulo      (SP) (11) 4007-1207

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